ENGINE
ELECTRICAL
SYSTEM
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GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
IGNITION SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
CHARGING SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
STARTING SYSTEM 27
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AUTOMATIC SPEED CONTROL (CRUISE) SYSTEM 35
GENERAL
GENERAL
SPECIFICATIONS
Distributor
Contact pointless type
Type
Advance mechanism Controlled by electronic control unit
1-3-4-2
Firing order
Ignition coil
Mold single-coil
Type
Primary coil resistance 0.5 Ä… 0.05
12.1 Ä… 1.8
Secondary coil resistance
Identification No.
PC91
Poong Sung
DSA-403
Dae Joon
Spark plug
NA
TC
Type
BKR5ES-11 BKR6ES
NGK
Champion RC9YC4 RC7YC
Plug gap 1.0-1.1 mm (0.039 ~ 0.043 in.) 0.8 -0.9 mm (0.031 -0.035 in.)
GENERAL 27-3
Starter motor
Direct drive type
Type
12V 0.9 KW
Rated output
Rated time 30 sec
No-load characteristics
11.5V
Terminal voltage
60A or less
Amperage
6,600 rpm or more
Maximum speed
No. of pinion teeth 8
0.0197-0.079 in. (0.52 mm)
Pinion gap
Alternator
Battery voltage sensing
Type
13.5V 75A
Rated output
Electronic built-in type
Voltage regulator type
14.4 Ä… 0.3V
Regulator setting voltage
-10 Ä… 3 mV/ºC
Temperature compensation
Identification No.
Mando AB175015
Battery
MF 60AH-B (Maintenance-free battery)
Type
48 Ah or more
Ampere hours (5HR)
60 Ah or more
(20HR)
420 A or more
Cold cranking [at -17.8ºC(OºF)]
92 min.
Reserve capacity
1.270 Ä… 0.01
Specific gravity [at 25ºC(77ºF)]
NOTE
COLD CRANK AMPERAGE is the amperage a battery can deliver for 30 seconds and maintain a terminal voltage
of 7.2 or greater at a specified temperature.
RESERVE CAPACITY RATING is the amount of time a battery can deliver 25A and maintain a minimum terminal
voltage of 10.5 at 26.7ºC (80°F).
27-4 IGNITION SYSTEM
IGNITION SYSTEM
GENERAL INFORMATION
Ignition timing is controlled by the electronic control ignition timing
system. The standard reference ignition timing data for the engine
operation conditions are programmed in the memory of the elec-
tronic control unit (ECU).
The engine conditions (rpm, load, warm-up condition, etc.) are
detected by the various sensors. Based upon these sensor signals
and the ignition timing data, signals to interrupt the primary current
are sent to the power transistor. The ignition coil is activated, and
timing is controlled this way.
TROUBLESHOOTING
Probable cause Remedy
Probable condition
Ignition coil faulty Inspect ignition coil
Engine will not start or is
hard to start. (Cranks OK)
Power transistor faulty Inspect power transistor
Distributor faulty Inspect distributor
High tension cable faulty Inspect high tension cable
Spark plugs faulty Replace plugs
Ignition wiring disconnected or broken Inspect wiring
Rough idle or stalls Spark plugs faulty Replace plugs
Ignition wiring faulty Inspect wiring
Ignition coil faulty Inspect ignition coil
Power transistor faulty Inspect power transistor
High tension cord faulty Inspect high tension cord
Spark plugs faulty Replace plugs
Engine hesitates/poor
acceleration
Ignition wiring faulty Inspect wiring
Spark plugs faulty Replace plugs
Poor mileage
IGNITION SYSTEM 27-5
CHECKING IGNITION COILS
1. Measurement of the primary coil resistance.
Measure the resistance of the positive (+) terminal and nega
tive (-) terminal of the ignition coil.
Standard value: 0.5 Ä… 0.05
2. Measurement of the secondary coil resistance.
Measure the resistance between the ignition coil s positive (+)
terminal and the high-boltage terminal.
Standard value: 12.1 Ä… 1.8
POWER TRANSISTOR
1. Connect the negative (-) terminal of the 3V power supply to
terminal 1 of the power transistor; then check whether there is
continuity between terminal 3 and terminal 4 when terminal 4
and the positive (+) terminal are connected and disconnected.
Terminal 4 and (+) terminal Terminal 1 and terminal 3
Connected Continuity
Disconnected No continuity
2. Replace the power transistor if there is a malfunction.
CHECKING SPARK PLUG
Inspection and Cleaning
1. Disconnect the spark plug cable from the spark plug.
NOTE
Pull on the spark plug cable boot when removing the spark
plug cable, not the cable, as it may be damaged.
2. Using a plug spark wrench, remove all of the spark plugs from
the cylinder head.
CAUTION
Take care not to allow contaminants to enter through the
spark plug holes.
3. Check the spark plugs for the following:
1) Broken insulator
2) Worn electrode
3) Carbon deposits
4) Damaged or broken gasket
5) Condition of the porcelain insulator at the tip of the spark
plug
IGNITION SYSTEM
27-6
4. Check the spark plug gap using a wire gap gauge, and adjust
if necessary.
Standard value: NA : 1.0 - 1.1 mm (0.039 - 0.043 in.)
TC : 0.8 - 0.9 mm (0.031 - 0.035 in.)
5. Re-insert the spark plug and tighten to the specified torque.
If it is overtorqued, damage to the threaded portion of cylinder
head might result.
Spark plug: 20-30 Nm (204-306 kg.cm, 15-21 Ib.ft)
Analyzing Spark Plug
Engine conditions can be analyzed by the tip deposits near the
electrode.
IGNITION SYSTEM 27-7
SPARK PLUG TEST
(When engine can be cranked)
Connect the spark plug to the high tension cable. Ground the outer
electrode (main body), and crank the engine. In the atmosphere,
only short sparks are produced because of the small discharge gap.
If the spark plug is good, however, sparks will occur in the discharge
gap (between the electrodes). In a defective spark plug, no sparks
will occur because of a leak through the insulation.
CHECKING SPARK PLUG CABLES
1. Check the cap and outer shell for cracks.
2. Measure the resistance.
Unit:
NOTE
Resistance should not be higher than per foot of
cable. If resistance is higher, replace the cable.
IGNITION SYSTEM
REMOVAL AND INSTALLATION OF COMPONENTS
DISTRIBUTOR
Removal
1. Disconnect the battery ground cable.
2. Remove the two distributor cap retaining clips and move cap to
one side.
3. Disconnect the lead wire connector.
4. Remove the distributor mounting nut and remove the distributor
assembly.
Installation
1. Turn the crankshaft so that No.1 piston cylinder is at top dead
center.
2. Install the distributor to the engine while aligning the shaft slot
with distributor s installation mark.
27-9
IGNITION SYSTEM
DISASSEMBLY AND ASSEMBLY OF DISTRIBUTOR
COMPONENTS
DISASSEMBLY
1. Pull off the rotor from the rotor shaft.
2. Remove the cover.
3.
Remove coupling lock spring.
4. Place the distributor on a soft base (wooden block) so that the
spring pin can be removed.
5. Remove the coupling lock pin by using pin punch.
6. Remove distribute shaft.
IGNITION SYSTEM
27-10
7. Lift off the plate and unit by removing the three mounting
screws.
INSPECTION OF CAP & ROTOR
After checking the following, repair or replace if a problem is found.
1. There must be no cracking in the cap.
2. There must be no damage to the cap s electrode or the rotor s
electrode.
3. There must be no carbon tracking.
4. Clean away any dirt from the cap and rotor.
REASSEMBLY
Distributor Shaft
After coating the shaft with a small amount of engine oil insert it into
the housing.
CAUTION
Do not use solvent or similar products.
Disc
Insert the disc into the sensor part of the pick up unit and install in
alignment with the spacer.
CAUTION
The disc s slits must not be restricted.
CHARGING SYSTEM 27-11
CHARGING SYSTEM
GENERAL INFORMATION
The charging system includes a battery, an alternator with a built-
in regulator, and the charging indicator light and wires. The alterna-
tor has six built-in diodes (three positive and three negative), each
rectifying AC current to DC current. Therefore, DC current appears
at alternator B terminal.
In addition, the charging voltage of this alternator is regulated by the
battery voltage detection system. The main components of the
alternator are the rotor, stator, rectifier, capacitor, brushes, bear-
ings and V-ribbed belt pulley. The brush holder contains a built-in
electronic voltage regulator.
TROUBLESHOOTING
Probable cause Remedy
Symptom
I
Fuse blown. Check fuses.
Charging warning
indicator does not
Light burned out. Replace lamp.
light with ignition
switch ON and Wiring connection loose. Tighten loose connections.
engine off.
Electronic voltage regulator faulty. Replace voltage regulator.
Drive belt loose or worn. Adjust tension or replace drive belt.
Charging warning
indicator does not
Battery cables loose, corroded or worn. Repair or replace cables.
go out with engine
running. Fuse blown. Check fuses.
(Battery requires
Fusible link blown. Replace fusible link.
frequent recharging).
Electronic voltage regulator or alternator Test alternator.
faulty.
Repair wiring.
Wiring faulty.
Drive belt loose or worn. Adjust tension or replace drive belt.
Discharge battery.
Wiring connection loose or open circuit. Tighten loose connection or repair
wiring.
Fusible link blown. Replace fusible link.
Poor grounding. Repair.
Test alternator.
Electronic voltage regulator or
alternator faulty.
Battery life.
Replace battery.
Electronic voltage regulator faulty.
Overcharge Replace voltage regulator.
Voltage sensing wire faulty.
Repair wire.
CHARGING SYSTEM
27-12
INSPECTION OF CHARGING SYSTEM
VOLTAGE DROP TEST OF ALTERNATOR
OUTPUT WIRE
This test determines whether or not the wiring between the alterna-
tor B terminal and the battery (+) terminal is good by the voltage
drop method:
Preparation
1. Turn the ignition switch to OFF .
2. Disconnect the battery ground cable.
3. Disconnect the alternator output lead from the alternator B
terminal.
4. Connect a DC ammeter (0 to 100A) in series to the B terminal
and disconnected the output lead. Connect the (+) lead of the
ammeter to the B terminal and the (-) lead to the disconnected
output wire.
NOTE
Use a clamp type ammeter that can measure current
without disconnecting the harness. The reason is that
when checking a vehicle that has a low output current due
to poor connection of the alternator B terminal, such a
poor connection is corrected as the B terminal is loos
ened and a test ammeter is connected in its place. As a
result, causes for the trouble may not be determined.
5. Connect a digital voltmeter between the alternator B terminal
and battery (+) terminal. Connect the (+) lead wire of the
voltmeter to the B terminal and the (-) lead wire to the battery
(+) terminal.
6. Connect the battery ground cable.
7. Leave the hood open.
Test
1. Start the engine.
2. Turn on the headlamps and adjust the engine speed so that the
ammeter reads 20A and read the voltmeter under this condition.
Result
1. It is okay if the voltmeter indicates the standard value.
Standard value: 0.2V max.
2. If the voltmeter indicates a value that is larger than the standard
value, poor wiring is suspected. In this case check the wiring
from the alternator B terminal to the fusible link to the battery
(+) terminal. Check for loose connections, color change due to
an overheated harness, etc. Correct them before testing again.
27-13
CHARGING SYSTEM
3. Upon completion of the test, set the engine speed at idle. Turn
off the head lamps and the ignition switch.
4. Disconnect the battery ground cable.
5. Disconnect the ammeter and voltmeter that have been con
nected for testing.
6. Connect the alternator output wire to the alternator B terminal.
7. Connect the battery ground cable.
OUTPUT CURRENT TEST
This test judges whether or not the alternator gives an output
current that is equivalent to the nominal output.
Preparation
1. Prior to the test, check the following items and correct as
necessary.
1) Check the battery installed in the vehicle to ensure that it is
in good condition*. The battery checking method is de
scribed in BATTERY .
NOTE
*The battery that is used to test the output current
should be one that has been partially discharged. With
a fully charged battery, the test may not be conducted
correctly due to an insufficient load.
2) Check the tension of the alternator drive belt. The belt
tension check method is described in the section COOL-
ING .
2. Turn off the ignition switch.
3. Disconnect the battery ground cable.
4. Disconnect the alternator output wire form the alternator B
terminal.
5. Connect a DC ammeter (0 to 100A) in series between the B
terminal and the disconnected output wire. Be sure to connect
the (-) lead wire of the ammeter to the disconnected output wire.
NOTE
Tighten each connection securely, as a heavy current will
flow. Do not rely on clips.
6. Connect a voltmeter (0 to 20V) between the B terminal and
ground. Connect the (+) lead wire to the alternator B terminal
and (-) lead wire to a good ground.
7. Attach an engine tachometer and connect the battery ground
cable.
8. Leave the engine hood open.
27-14 CHARGING SYSTEM
Test
1. Check to see that the voltmeter reads the same value as the
battery voltage.
If the voltmeter reads 0V, and open circuit in the wire between
the alternator B terminal and battery (-) terminal, a blown
fusible link or poor grounding is suspected.
2. Start the engine and turn on the headlights.
3. Set the headlights to high beam and the heater blower switch to
HIGH, quickly increase the engine speed to 2,500 rpm and read
the maximum output current value indicated by the ammeter.
NOTE
After the engine startup, the charging current quickly
drops. Therefore, the above operation must be done quickly
to read the maximum current value correctly.
Result
1. The ammeter reading must be higher than the limit value. If it is
lower but the alternator output wire is in good condition, remove
the alternator from the vehicle and test it.
Limit value:
52.5 A min . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75A alternator
NOTE
1) The nominal output current value is shown on the
nameplate affixed to the alternator body.
2) The output current value changes with the electrical
load and the temperature of the alternator itself. There
fore, the nominal output current may not be obtained.
If such is the case, keep the headlights on to cause
discharge of the battery, or use the lights of another
vehicle to increase the electrical load.
The nominal output current may not be obtained if the
temperature of the alternator itself or ambient tempera
ture is too high.
In such a case, reduce the temperature before testing
again.
2. Upon completion of the output current test, lower the engine
speed to idle and turn off the ignition switch.
3. Disconnect the battery ground cable.
4. Remove the ammeter and voltmeter and the engine tachom
eter.
5. Connect the alternator output wire to the alternator B terminal.
6. Connect the battery ground cable.
CHARGING SYSTEM 27-15
REGULATED VOLTAGE TEST
The purpose of this test is to check that the electronic voltage
regulator controls voltage correctly.
Preparation
1. Prior to the test, check the following items and correct if
necessary.
1) Check the battery installed on the vehicle to see that it is
fully charged. For battery checking method, see BAT
TERY .
2) Check the alternator drive belt tension. For belt tension
check, see section, COOLING .
2. Turn ignition switch to OFF .
3. Disconnect the battery ground cable.
4. Connect a digital voltmeter between the S(L) terminal of the
alternator and ground. Connect the (+) lead of the voltmeter to
the "S(L)" terminal of the alternator. Connect the (-) lead to good
ground or the battery (-) terminal.
5. Disconnect the alternator output wire from the alternator B
terminal.
6. Connect a DC ammeter (0 to 100A) in series between the B
terminal and the disconnected output wire. Connect the (-) lead
wire of the ammeter to the disconnected output wire.
7. Attach the engine tachometer and connect the battery ground
cable.
Test
1. Turn on the ignition switch and check to see that the voltmeter
indicates the following value.
Voltage: Battery voltage
If it reads 0V, there is an open circuit in the wire between the
alternator S(L) terminal and the battery (+), or the fusible link
is blown.
2. Stan the engine. Keep all lights and accessories off.
3. Run the engine at a speed of about 2,500 rpm and read the
voltmeter when the alternator output current drops to 10A or
less.
CHARGING SYSTEM
27-16
Result
1. If the voltmeter reading agrees with the value listed in the
Regulating Voltage Table below, the voltage regulator is func
tioning correctly. If the reading is other than the standard value,
the voltage regulator or the alternator is faulty.
Regulating Voltage Table
2. Upon completion of the test, reduce the engine speed to idle,
and turn off the ignition switch.
3. Disconnect the battery ground cable.
4. Remove the voltmeter and ammeter and the engine tachom-
eter.
5. Connect the alternator output wire to the alternator B terminal.
6. Connect the battery ground cable.
CHARGING SYSTEM
27-17
ALTERNATOR
REMOVAL AND INSTALLATION
TORQUE : Nm (kg.cm, Ib.ft)
1. Disconnect the negative terminal from the battery.
2. Loosen the belt tension and remove the belt,
3. Raise the vehicle.
4. Remove the mud guard-RH.
5. Disconnect the alternator B+ terminal wire.
6. Remove the alternator assembly.
7. Installation is the reverse order of removal.
CHARGING SYSTEM
27-18
COMPONENTS (75A)
1. Pulley
2. Seal
Rotor assembly
3.
Rear bearing
4.
Bearing retainer
5.
Front bearing
6.
7. Front bracket
8. Stator
9. Plate
10. Voltage regulator and brush holder
11. Brush
12. Brush spring
13. Slinger
14. Rectifier
15. Rear bracket
CHARGING SYSTEM
27-19
DISASSEMBLY
1. Remove the three through bolts.
2. Insert a fiat screwdriver between the front bracket and stator
core, and pry downward.
CAUTION
1) Do not insert the screwdriver too deeply, as there is a
danger of damaging the stator coil.
2) The rear cover may be hard to remove because a ring
is used to lock the outer race of the rear bearing. To
facilitate removal of rear cover, heat just the bearing
box section with a 200-watt soldering iron.
Do not use a heat gun, as it may damage the diode
assembly.
3. Secure the rotor in a vise with the pulley side up.
CAUTION
Be careful that the vise jaws do not damage the rotor.
4. Remove the pulley nut, then remove the spring washer, then
the pulley, and then the spacer.
5. Remove the front bracket and two seals.
6. Remove the rotor from the vise.
7. Remove the brush holder screws, the rectifier screws, and the
nut from the B terminal.
8. Remove the stator assembly from the rear bracket.
9. Detach the slinger from the brush holder.
10. When the stator is to be removed, unsolder the three stator
leads to the main diodes on the rectifier.
CAUTION
1) When soldering or unsoldering, use care to make sure
that heat of soldering iron is not transmitted to the
diodes for a long period.
2) Use care that excessive force is not exerted on the
leads of the diodes.
11. When separating the rectifier from the brush holder, unsolder
the two plates soldered to the rectifier.
CHARGING SYSTEM
27-20
INSPECTION
Rotor
1. Check the rotor coil for continuity. Check to make sure that
there is continuity between the slip rings.
If resistance is extremely low, it means that there is a short. If
there is no continuity or if there is a short circuit, replace the rotor
assembly.
Resistance value: Approx. 3.1
2. Check the rotor coil for gound. Check to make sure that there
is no continuity between slip the ring and the core.
If there is continuity, replace rotor assembly.
Stator
1. Make a continuity check on the stator coil. Check to make sure
that there is continuity between the coil leads.
If there is no continuity, replace stator assembly.
2. Check the coil for grounding. Check to make sure that there is
no continuity between the coil and the core.
If there is continuity, replace the stator assembly.
Rectifiers
Positive rectifier test
Check for continuity between the positive rectifier and stator coil
lead connection terminal with an ohmmeter. The ohmmeter should
read continuity in only one direction. If there is continuity in both
directions, a diode is shorted.
Replace the rectifier assembly.
CHARGING SYSTEM
27-21
Negative rectifier test
Check for continuity between the negative rectifier and the stator
coil lead connection terminal. The ohmmeter should read continuity
in only one direction. If there is continuity in both directions, a diode
is shorted, and the rectifier assembly must be replaced.
Diode trio test
Check the three diodes for continuity by connecting an ohmmeter
to both ends of each diode. Each diode should have continuity in
only one direction.
If continuity is present in both directions, a diode is defective and the
heatsink assembly must be replaced.
BRUSH REPLACEMENT
Replace the brushes if they are worn to limit line.
1. Unsolder the pigtail and remove the old brush and spring.
2. Install the brush spring and a new brush in the brush holder.
3. Insert the brush to where there is a space 2 to 3 mm (0.079 to
0.118 in.) between the limit line and the end of the brush holder.
4. Solder the pigtail to the brush holder.
CHARGING SYSTEM
27-22
REASSEMBLY
Perform reassembly in the reverse procedure of disassembly. Pay
attention to the following:
Before the rotor is attached to the rear bracket, insert a wire through
the small hole in the rear bracket to lock the brush. After the rotor
has been installed, the wire can be removed.
INSTALLATION
1. Position the alternator and insert the support bolt. (Do not
attach the nut.)
2. Push the alternator forward and determine how many spacers
(thickness: 0.198 mm) should be inserted between the front leg
of the alternator and the front case (space A in the illustration).
(There should be enough spacers so that they do not fall out
when you let go of them.)
3. Insert the spacers (space A in the illustration), attach the nut,
and complete the installation.
CHARGING SYSTEM
27-23
BATTERY (MAINTENANCE FREE TYPE)
1. The maintenance-free battery is, as the name implies, totally
maintenance free and has no removable battery cell caps.
2. Water never needs to be added to the maintenance-free
battery.
3. The battery is completely sealed, except for small vent holes in
the cover.
4. The battery contains a visual inspection indicator.
BATTERY VISUAL INSPECTION (1)
CHARGING SYSTEM
27-24
CHARGING SYSTEM
27-25
SPECIFIC GRAVITY CHECK CHART
The specific gravity of battery electrolyte changes with tempera-
ture. Heat thins the solution and lowers the specific gravity. Cold
thickens the solution and raises the specific gravity.
A fully charged battery should have a specific gravity between
1.260 and 1.280, with the electrolyte temperature at 80°F, the
specific gravity reading must be corrected by adding 4 points (.004)
for each 10° above 80°F or subtracting 4 points for every 10° below
80°F.
For example : The hydrometer reading is 1.280, and the electrolyte
temperature reading is 10°F. By using the chart, the specific gravity
must be lowered by 0.028 points. The true corrected reading is
1.252.
1.280 - 0.028 = 1.252
You should never take a hydrometer reading immediately after
water has been added. The water and electrolyte must be mixed by
either charging for a few minutes at a low rate or by allowing the
battery to sit for an hour.
CAUTION
A difference of 50 points (0.050) or more between one or more
cells indicates a defective battery. It should be replaced.
BATTERY CHARGE RATE
Charge method
Slow charge (5A) Fast charge (20A)
Specific gravity
Below 1.100 14 hours 4 hours
1.100 - 1.130 12 hours 3 hours
1.130 - 1.160 10 hours 2.5 hours
1.160 - 1.190 8 hours 2.0 hours
1.190 - 1.220 6 hours 1.5 hours
Above 1.220 4 hours 1.0 hours
27-26 CHARGING SYSTEM
BATTERY VISUAL INSPECTION (2)
1. Make sure ignition switch is in the Off position and all acces
sories are Off.
2. Disconnect the battery cables (negative first)
3. Remove the battery from the vehicle.
CAUTION
Care should be taken in the event the battery case is
cracked or leaking, to protect your skin from the electro
lyte. A suitable pair of rubber gloves (not household type)
should be worn when removing the battery.
4. Inspect the battery carrier for damage caused by the loss of acid
from the battery. If acid damage is present, it will be necessary
to clean the area with a solution of clean warm, water and
baking soda. Scrub the area with a stiff bristle brush and wipe
off with a cloth moistened with baking soda and water.
Clean the top of the battery with the same solution as described
in Step (4).
Inspect the battery case, and cover, for cracks. If cracks are
present, the battery must be replaced.
Clean the battery posts with a suitable battery post cleaner.
Clean the inside surface of the terminal clamps with a suitable
battery terminal cleaning tool. Replace damaged or frayed
cables and broken terminal clamps.
9. Install the battery in the vehicle.
10. Connect the cable terminals to the battery post, making sure
the top of the terminals are flush with the top of the post.
11. Tighten the terminal nut securely.
12. Coat all connections with light mineral grease after tightening.
CAUTION
When batteries are being charged, an explosive gas forms
beneath the cover of each cell. Do not smoke near batteries
being charged or which have recently been charged.
Do not break live circuits at the terminals of the batteries
being charged. A spark will occur where the circuit is
broken.
Keep all open flames away from the battery.
STARTING SYSTEM 27-27
GENERAL INFORMATION
The starting system includes the battery, starter motor, solenoid
switch, ignition switch, inhibitor switch (A/T only), connection wires
and the battery cables.
When the ignition key is turned to the start position, current flows
and energizes the coil of the starter motor s solenoid. When this
happens, the solenoid plunger and the clutch shift lever are
activated, and the clutch pinion engages the ring gear. The contacts
close and the starter motor cranks.
In order to prevent damage caused by excessive rotation of the
starter armature when the engine starts, the clutch pinion gear
overruns.
TROUBLESHOOTING
Probable condition Probable cause
Remedy
Battery charge low
Charge or replace battery.
Engine will not crank.
Battery cables loose, corroded or worn
Repair or replace cables.
Inhibitor switch faulty
Adjust or replace switch.
(Vehicle with automatic transaxle only)
Replace fusible link.
Fusible link blown
Starter motor faulty Repair starter motor.
Replace ignition switch.
Ignition switch faulty
Battery charge low Charge or replace battery.
Engine cranks slowly.
Battery cables loose, corroded or worn Repair or replace cables.
Repair starter motor.
Starter motor faulty
Repair starter motor.
Starter keeps running. Starter motor faulty
Replace ignition switch.
Ignition switch faulty
Repair wiring.
Short in wiring
Starter spins but engine
will not crank.
Pinion gear teeth broken or starter
Repair starter motor.
motor faulty
Ring gear teeth broken Replace flywheel ring gear or
torque converter.
STARTING SYSTEM
27-28
STARTER
REMOVAL AND INSTALLATION
9.8-16 (100-160, 7.3-11.7)
TORQUE : Nm (kg.cm, Ib.ft)
1. Disconnect the battery ground cable.
2. Remove the speed meter cable and the shift cable.
3. Disconnect the high tension cable from ignition coil to distributor.
4. Disconnect the starter motor connector and terminal.
5. Remove the starter motor assembly.
6. Installation is the reverse order of removal.
STARTING SYSTEM
COMPONENTS
1. Front bracket
2. Front bushing
3. Cap
4. Screw
5. Solenoid
6. Plunger
7. Spring
8. Packing
9. Lever
10. Holder
11. Spring
12. Packing
13. Washer
14. Stop ring
15. Stopper
16. O.R.C. (Overrunning clutch)
17. Armature
18. Washer
19. Yoke ass y
20. Plate ass y
21. Rear cover
22. Rear bushing
23. Screw
24. Bolt
27-30 STARTING SYSTEM
INSPECTION (After removal)
Pinion Gap Adjustment
1. Disconnect the wire from the M-terminal.
2. Connect a 12V battery between the S-terminal and the M-
terminal.
3. Set the switch to ON , and the the pinion will move out.
CAUTION
This test must be performed quickly (in less than 10
seconds) to prevent coil from burning.
4. Check the pinion to stopper clearance (pinion gap) with a feeler
gauge.
If the pinion gap is out of specification, adjust by adding or
removing washers between the solenoid and the front bracket.
Pinion Gap: 052.0 mm (0.0197-0.079 in)
Solenoid Pull-in Test
1. Disconnect the connector from the M-terminal.
2. Connect a 12V battery between the S-terminal and M-terminal.
CAUTION
This test must be performed quickly (in less than 10
seconds) to prevent the coil from burning.
3. If the pinion moves out, the pull-in coil is good. If it doesn t,
replace the solenoid.
Solenoid Hold-in Test
1. Disconnect the connector from the M-terminal.
2. Connect a 12V battery between the S-terminal and the body.
CAUTION
This test must be performed quickly (in less than 10
seconds) to prevent the coil from burning.
3. If the pinion remains out, everything is in order. If the pinion
moves in, the hold-in circuit is open. Replace the magnetic
switch.
Solenoid Return Test
1. Disconnect the connector from the M-terminal.
2. Connect a 12V battery between the M-terminal and the body.
CAUTION
This test must be performed quickly (in less than 10
seconds) to prevent the coil from burning.
3. Pull out the pinion and then release it. If the pinion returns
quickly to its original position, everything is in order. If it doesn t
replace the solenoid.
27-31
STARTING SYSTEM
Performance Test (No-load)
1. Make the no-load circuit test as shown.
2. After adjusting the rheostat until the battery voltage shown on
the voltmeter reads 11.5 volts, confirm that the maximum
amperage draw is within the specifications and that the starter
motor turns smoothly and freely.
Current : 60A or less
DISASSEMBLY
To remove the overrunning clutch from the armature shaft, the stop
ring must be removed.
Move the stop ring toward the pinion and remove the snap ring, now
the stop ring can be removed from shaft.
INSPECTION (After disassembly)
Armature Coil Ground Test
Using an ohmmeter, check to make sure that there is no continuity
between the commutator and the armature coil core. If there is
continuity, replace armature assembly.
Armature Coil Short-Circuit Test
Test the armature coil in a growler. Replace the coil if there are
signs of a short. If the blade attached to the core vibrates while the
core is turned, the armature is shorted.
Armature Coil Open-Circuit Test
Using an ohmmeter, check for continuity between the commutator
segments. If there is no continuity, the commutator segments are
open. Replace the armature assembly.
STARTING SYSTEM
27-32
Field Coil Open-Circuit Test
Using an ohmmeter, check the field coil for continuity. If there is no
continuity, the field coil is open. Replace the field coil assembly.
Field Coil Ground Test
With the field coil mounted to the yoke, check for continuity between
the field coil and the yoke using an ohmmeter. If there is continuity,
replace the field coil.
Brush
A brush worn down to the wear limit line should be replaced.
Brush Holder
Check for continuity between the (+) side brush holder and brush
holder base. If there is continuity, replace the holder assembly.
Overrunning Clutch
Inspect the pinion and spline teeth for wear or damage. Replace if
damaged. Also inspect the flywheel ring gear for damage.
Rotate the pinion. It should turn freely in a clockwise direction, and
lock when turned counterclockwise.
STARTING SYSTEM 27-33
BRUSH REPLACEMENT
1. Remove the worn brush while taking care not to damage the
pigtail.
2. Sand the pigtail end with sandpaper to ensure a good soldering
joint.
3. Solder the end of the pigtail.
REAR BRACKET BUSHING REPLACEMENT
1. Before the bushing is removed, measure and record the
pressed-in position (depth) of the bushing.
2. The bushing can be removed by the use of a puller as shown
in the illustration.
3. Press a new bushing in, up to the position recorded under
Step. 1.
REASSEMBLY
1. Install the overrunning clutch to the front end of the armature
shaft.
2. Install the stop ring and the snap ring from the front end of the
armature shaft. Push the stop ring all the way toward the snap
ring.
3. When the lever is mounted to the front bracket, pay attention to
its direction. If it is mounted in a reverse direction, the pinion will
remain in an outward position and fail to operate properly.
STARTING SYSTEM
27-34
INSPECTION OF CLUTCH START SYSTEM
(IGNITION LOCK SYSTEM)
Check clutch pedal
Check that pedal height, pedal freeplay and clutch pedal clevis
pin play are correct. (Refer to clutch group)
Check starter relay
Remove the starter relay and check continuity between the
terminals. If the continuity is not as specified, replace the relay.
Check ignition lock switch
1. Check for continuity between terminals when the switch is ON
(pushed).
2. Check for no continuity between terminals when the switch is
OFF (free)
AUTOMATIC SPEED CONTROL (CRUISE)
AUTOMATIC SPEED CONTROL (CRUISE)
SPECIFICATIONS
Specifications
Items
Speed control unit
DC 10 l 16 V
Operating voltage range
-30 I +75°C (-22 I +167°F)
Operating temperature
0.4 V
Voltage drop between unit and actuator
Low speed limit : 40Ä…3 km/h (25Ä…2 mph)
Operating speed range
High speed limit : 145 Ä… 5 km/h (90 Ä… 3 mph)
Actuator
Rated voltage DC 12 V
-30 ~ +90°C (-22 - +194°F)
Operating temperature
Operating consumption 3A or less (at 12V 20°C)
1 or less (at 500V megger)
Insulating resistance
Cruise main switch
DC 12 V
Rated voltage
Operating force 0.3 ~ 1.0 kg
0.15 V or less
Voltage drop
Stop lamp switch
DC 12 V
Rated voltage
Rated load
27 x 5 W (lamp load)
Stop lamp
0.1 - 0.5 A (relay load)
Cruise control
Min 3 (by 500 V megger)
Insulating resistance
SPECIAL SERVICE TOOL
Tool
Use
Illustration
(Number and name)
09391-33100 Rom PACK HMC-3
Multi-use tester
Reading diagnosis code with MUT
Reading diagnosis code
09391-33402
27-36 AUTOMATIC SPEED CONTROL (CRUISE)
Engine compartment Interior
B
Name Name Symbol
Symbol
E
Accelerator switch Reed switch (Vehicle speed sensor)
A
Actuator Speed-control switch F
B
Clutch switch Speed-control unit (cruise control unit) G
C
Cruise main switch H
Stop lamp switch
D
AUTOMATIC SPEED CONTROL (CRUISE)
27-37
AUTOMATIC SPEED CONTROL (CRUISE)
System Block Diagram
Component parts and function outline
FUNCTION
COMPONENT PART
Converts vehicle speed to pulse.
Vehicle-speed sensor
Receives signals from sensor and control switches;
Electronic control unit (ECU)
ECU controls all automatic speed control functions.
Regulates the throttle valve to the set opening by signals
Actuator
from the ECU.
Switch for automatic speed control power supply.
CRUISE main switch
Controls automatic speed control functions by SET
SET switch
Control switch
(COAST) and RESUME (ACCEL).
RESUME switch
Illuminates when CRUISE main switch is ON (Built into
CRUISE main switch indicator
CRUISE switch).
When the SET or RESUME switch is switched ON, the
Piezo alarm alarm sounds to notify the driver that the control unit has
recieved the ON signal.
27-39
AUTOMATIC SPEED CONTROL (CRUISE)
FUNCTION
COMPONENT PART
Stop lamp switch/Clutch switch (A/T)
Cancel switch
Sends cancel signals to the ECU.
Brake switch
Inhibitor switch
Controls the overdrive ON and OFF, based on signals
ELC 4-speed automatic transaxle control unit
from the ECU for the ASC.
Diagnostic connector By connecting the voltmeter or multi-use tester, control
unit diagnostic codes can be read.
AUTOMATIC SPEED CONTROL (CRUISE)
CONSTRUCTION OF ACTUATOR
INTERNAL CONSTRUCTION
Drive gear
CIRCUIT DIAGRAM
27-41
AUTOMATIC SPEED CONTROL (CRUISE)
CONTROL LOGIC BLOCK DIAGRAM
27-42
AUTOMATIC SPEED CONTROL (CRUISE)
CONTROL UNIT FUNCTIONS
1. SET (Fixed-speed control)
With the MAIN switch turned ON, the SET switch is switched from ON to OFF while the vehicle is being driven within
the speed range in which speed settings are possible (approximately 40-145 km/h (25-90 mph)), the vehicle speed
at the moment the SET switch was switched from ON to OFF is memorized as the set vehicle speed , and there after
the actuator is controlled so that fixed-speed driving at that speed is possible. The following figure below shows the
timing charts.
1) INITIAL PULSE
The initial pulse opens the throttle valve to a degree of opening which approximately corresponds to the vehicle
speed. This pulse is output when the ASC system is set.
2) TRIM PULSE
The trim pulse is a control pulse for correcting the vehicle speed which is output response to detected speed errors.
The output pulse width is determined based on the amount of deviation between the current vehicle speed and
the set vehicle speed, and on throttle position.
2. COAST
During fixed-speed driving, while the COAST switch is ON, the actuator D.C. motor is caused to rotate to the REL
(release) side. The vehicle speed when the switch is OFF as deceleration continues is entered in the memory, and
is thereafter controlled as the fixed speed.
3. RESUME SPEED
When (after the ASC system is canceled by the cancel conditions) the RESUME switch is switched from OFF to ON,
while driving at a vehicle speed which is the low-speed limit (approximately 40 km/h (25 mph)) or higher, the vehicle
speed memorized before cancellation of the ASC system will be controlled as the fixed speed.
4. ACCELERATION
During fixed-speed driving or above the low-speed limit, while the ACCELERATION switch is ON, the actuator s D.C
motor is caused to rotate to the PULL side. The vehicle speed when the switch is OFF as acceleration continues is
entered in the memory, and is thereafter controlled as the fixed speed.
27-43
AUTOMATIC SPEED CONTROL (CRUISE)
5. CANCELLATION
When the signals below are input (during fixed-speed driving), conductivity to the electromagnetic clutch is interrupted,
thus canceling the ASC system.
1) Stop lamp switch ON (brake pedal depressed)
2) Inhibitor switch ON (selector lever at P or N position)
NOTE
When the brake pedal is depressed and the stop lamp switch is switched ON, the ASC system will be canceled
even if there is wiring damage or disconnection at the fuse for the stop lamp.
CANCEL SWITCH CIRCUIT DIAGRAM
NO : Normal open
NC : Normal close
6. LOW-SPEED LIMIT
There is automatic cancellation at or below the low-speed limit (approximately 40 km/h (25 mph)).
27-44 AUTOMATIC SPEED CONTROL (CRUISE)
7. HIGH-SPEED LIMIT
The vehicle cannot be driven at a fixed speed which is at or higher than the high-speed limit (approximately (145
km/h (90 mph)).
Note that the vehicle speed memorized when the SET switch is pressed while the vehicle is traveling at the high-speed
limit or higher will be the high-speed limit vehicle speed.
8. AUTOMATIC CANCELLATION
When, during fixed-speed driving, the signals described below are input, conductivity to the electromagnetic clutch is
interrupted, thus canceling the ASC system.
1) If the vehicle speed decreases to a speed which is approximately 20 km/h (12 mph) or more below the memorized
vehicle speed.
2) If there is no input of the vehicle speed signal for more than 0.5 second.
3) If there is damaged or disconnected wiring of the input line (stop lamp switch load side) of the stop lamp switch.
4) If the cancel switches (stop lamp switch, inhibitor switch) and command switches (SET switch or RESUME switch)
are switched on at the same time.
NOTE
If the SET and RESUME switches are ON at the same time, the cruise control will operate in the COAST
mode and the speed will decrease.
9. PIEZO ALARM
When the CRUISE switch is ON, SET switch or RESUME
switch ON signals are recieved, the alarm is activated for
approximately 0.2 second.
NOTE
Power is supplied from the fuse No.12 (10A) to the alarm.
10. ACCELERATOR SWITCH
The accelerator switch is a switch that functions to detect the condition of the accelerator pedal, and is one of the ELC
4 A/T sensors.
Because the accelerator pedal is not used during fixed-speed driving, the accelerator switch is OFF during this time
only, so as not to adversely affect the function of the ELC 4 A/T.
27-45
AUTOMATIC SPEED CONTROL (CRUISE)
11. OVERDRIVE-CANCEL FUNCTION
When, during fixed-speed driving, the actual vehicle speed decreases to (or below) a speed which is below the
memorized vehicle speed, and the actual vehicle speed continues at that reduced speed, or during the resume
operation described in item 3 or the acceleration operation described in item 4, etc., it becomes necessary to return
to the vehicle speed for a short time and to accelerate, the overdrive function of ELC 4 A/T-equipped models is canceled
for a certain time.
27-46 AUTOMATIC SPEED CONTROL (CRUISE)
12. SELF-DIAGNOSIS FUNCTION
The cruise control system can display trouble codes from the cruise control unit through the diagnostic connector. The
codes can be read by using a voltmeter or the multi-use tester. Be sure to turn the main switch ON before trying to
read the codes.
NOTE
The display of the trouble codes starts if the vehicle speed decreases to less than approximately 20 km/h (12
mph) after the cancellation of the ASC system function, and stops if the vehicle speed increases to
approximately 20 km/h (12 mph) or higher.
Self-diagnosis Descriptions and Displays
CODE NO. DIAGNOSIS ITEM DISPLAY PATTERNS SELF-DIAGNOSIS DESCRIPTION
1. Open transistor
11 Clutch coil
2. Open brake circuit, blown fuse
3. Stop lamp switch closed.
4. Stop lamp circuit open.
12 Speed sensor No vehicle speed signal input for more
than 1 seconds
Vehicle speed less than 40 km/h.
13 Low speed limit
Vehicle speed less than memory speed
14 Redundant brake
by 20 km/h
SET and RESUME switches on simulta-
15 Control switch
neously.
1. Open fuse or circuit in stop lamp
16 Cancel signal
switch.
2. Auto transaxle inhibit switch ON
(closed).
3. Open circuit in stop lamp circuit.
4. Stop lamp switch ON.
27-47
AUTOMATIC SPEED CONTROL (CRUISE)
13. INPUT SWITCH CHECK
This unit has a check function for the input signal switch.
The display starts when the main switch is turned ON while the set and resume switches are turned ON .
1) Trouble codes are stored in memory and displayed in sequential order of priority.
2) Smaller code number shall be placed higher in priority.
3) Even when an input of higher priority is detected among check function items, an item currently stored in memory
shall be shown on display for one cycle. (One cycle shall be an interval during which all check functions stored in
memory are shown on display.)
4) Code No.24 and 25 should be checked while a vehicle is running.
Input check table
DISPLAY PATTERNS SELF-DIAGNOSIS DESCRIPTION
CODE NO. DIAGNOSIS ITEM
Set switch ON
21 SET switch circuit normal
Resume switch ON
22 RESUME switch circuit normal
Cancel switch ON
23 Each CANCEL circuit normal
40 km/h over
24 When both No.24 and No.25 can be
confirmed, vehicle-speed sensor circuit
normal
40 km/h lower
25
27-48 AUTOMATIC SPEED CONTROL (CRUISE)
TROUBLESHOOTING
BEFORE TROUBLESHOOTING
The ASC (Automatic speed-control) system performs control func-
tions for the setting or cancellation of the fixed-speed driving speed
based upon the data provided by input signals. As a result, when the
ASC system is canceled, the cause of the cancellation is memo-
rized in a separate circuit by the ECU, regardless of whether or not
the ASC system condition is normal or abnormal, thus providing the
ECU with the self-diagnosis function by certain fixed patterns, as
well as the function of being able to check whether or not the ECU s
input switches or sensor are normal. Thus, by effectively using
these function, the time required checking and repair can be
shortened.
NOTE
When the computer (ECU) power supply (ignition switch and
main switch) is switched OFF, the memorized trouble codes
are erased, and so for this reason the power supply must be
left ON until the checking is completed.
SELF-DIAGNOSIS CHECKING
Self-diagnosis checking is performed when there has been an
automatic cancellation, without cancel switch operation.
1. The following two methods can be used for checking the
diagnosis. Note that the diagnosis check connector is located
in the fuse box.
1) If a multi-use tester is used
Connect the multi-use tester s socket and connector to the
cigarette lighter socket and the self-diagnosis check
connector, and set the tester.
Use the tester according to its operation instructions; dis-
play the diagnosis code number and then check.
27-49
AUTOMATIC SPEED CONTROL (CRUISE)
2) If a voltmeter is used
Connect a voltmeter between the ground terminal and the
terminal for ASC of the diagnosis check connector.
It is possible to discover which circuit is the cause of the
cancellation by verifying the indication shown by the
volt meter with the display patterns shown on the next page.
2. When trouble codes No. 11, 12, 15 or 16 are displayed, check
the troubleshooting symptom applicable to that number.
NOTE
Code No. 16 is entered in the memory as cancel switch ON
signal input if the system is canceled by depressing the
brake pedal, and code No.13 or No.14 is entered when
there is an automatic cancellation because the vehicle
speed drops when the vehicle is driven up a steep slope
with the preset speed setting left set, etc., when however,
there is a cancellation not intentionally made by the driver,
the cause might be damaged or disconnected stop lamp
switch input wiring, a malfunction of the stop lamp switch
ON, etc., even though the same code No.16 is displayed.
DISPLAY SIGNAL PATTERN (FOR EXAMPLE CODE 23)
27-50 AUTOMATIC SPEED CONTROL (CRUISE)
TROUBLESHOOTING PROCEDURES
First, select the applicable malfunction symptom from the Trouble
Symptom Charts. Conduct the self-diagnostic test following the
directions on the charts.
Determine the condition of all function circuits.
CAUTION
Because the computer (self-diagnosis) memory data will be
erased, when the system is unintentionally canceled during
fixed-speed driving, the ignition switch and/or the cruise main
switch of the ASC system should not be switched OFF, and the
battery should not be disconnected.
1. Make the following preliminary inspections.
1) Check that the installation of the actuator, accelerator
cables are correct, and that the cables and links are
securely connected.
2) Check that the accelerator pedal moves smoothly.
3) Adjust the cable so there is no excessive tension or
excessive play on the accelerator cable.
4) Check that the ECU, actuator, cruise main and control
switch and the connector of each cancel switch are
connected securely.
2. Check in the sequence indicated in the Trouble Symptom
Chart.
3. If these checks indicate a normal condition, replace the cruise
control unit.
AUTOMATIC SPEED CONTROL (CRUISE)
TROUBLE SYMPTOM CHARTS
Trouble Symptom 1
27-52 AUTOMATIC SPEED CONTROL (CRUISE)
NOTE
Trouble Symptom 2
If, after the occurrence of the problem, the ignition switch and
the cruise main switch have not been switched OFF, it is
possible to determine (by checking the diagnosis output
code) which circuit canceled the system s operation.
ASC system cannot be set
This chart is to be used, for troubleshooting if it is not possible
to use the self-diagnosis for checking.
o Damaged or disconnected wiring of the ECU power supply
Check the ECU power supply circuit No
circuit
and SET or RESUME switch. Are
o Damaged or disconnected wiring of the SET or RESUME
they normal ?
switch
Yes
Input check items
Remedy
Check results Probable cause
Code 21 remains even though SET SET switch ON mal- Replace the control
switch is set to OFF. function
switch
SET switch input line
Repair the harness.
short-circuit
Code 22 remains even though RE- RESUME switch ON
Replace the control
SUME switch is set to OFF. malfunction
switch.
RESUME switch input
Repair the harness.
line short-circuit
Code 23 remains even though CAN- Malfunction of the CAN-
Check or repair each
CEL switch is set to OFF. CEL circuit (ON mal- CANCEL circuit.
function)
Code 25 does not disappear, and code Malfunction to the ve-
Check or repair the
24 does not appear, even though ve- hicle-speed sensor cir-
vehicle speed sensor
hicle speed reaches approximately 40 cuit (damaged or dis- circuit.
km/h (25 mph) or higher. connected wiring, or
short-circuit)
Normal
NOTE
Check the actuator circuit
If the check results of the actuator circuit of the actuator itself
reveal a normal condition, replace the electronic control unit
(ECU)
AUTOMATIC SPEED CONTROL (CRUISE) 27-53
Trouble Symptom 3
Trouble symptom Probable cause
Remedy
Malfunction of the vehicle
o The set vehicle speed varies Repair the vehicle speed sensor
speed sensor circuit
greatly upward or downward system, or replace the part
o Surging (repeated alternating
Malfunction of the speedometer
acceleration and deceleration)
cable or speedometer drive gear
occurs after setting
Actuator circuit poor contact Repair the actuator system, or
replace the part
Malfunction of the actuator
Malfunction of the ECU Replace the ECU
Trouble Symptom 4
Probable cause
Remedy
Trouble symptom
Damaged or disconnected wiring of
Repair the harness or replace the
The ASC system is not canceled
the stop lamp switch
stop lamp switch
when the brake pedal is depressed
Actuator drive circuit short
Repair the harness or replace the
actuator
Malfunction of the ECU
Replace the ECU
Trouble Symptom 5
Remedy
Trouble symptom Probable cause
Repair the harness or repair or re-
The ASC system is not canceled Damaged or disconnected wiring
place the inhibitor switch
when the shift lever is moved to the
of inhibitor switch input circuit
N position
(It is canceled, however, when the Improper adjustment of inhibitor
brake pedal is depressed) switch
Replace the ECU
Malfunction of the ECU
AUTOMATIC SPEED CONTROL (CRUISE)
Trouble Symptom 6
Probable cause Remedy
Trouble symptom
Temporary damaged or discon- Repair the harness or replace the
Cannot decelerate (coast) by using
nected wiring of SET switch input SET switch
the SET switch
circuit
Actuator circuit poor contact Repair the harness or replace the
actuator
Malfunction of the actuator
Malfunction of the ECU Replace the ECU
Trouble Symptom 7
Trouble symptom Probable cause Remedy
Cannot accelerate or resume speed Damaged or disconnected wiring, or Repair the harness or replace the
by using the RESUME switch short circuit, or RESUME switch in- RESUME switch
put circuit
Actuator circuit poor contact Repair the harness or replace the
actuator
Malfunction of the actuator
Malfunction of the ECU Replace the ECU
Trouble Symptom 8
Trouble symptom Probable cause Remedy
ASC system can be set while driving Malfunction of the vehicle- Repair the vehicle speed sensor sys-
at a vehicle speed of less than 40 km/ speed sensor circuit tem, or replace the part
h (25 mph), or there is no automatic
cancellation at that speed Malfunction of the speedometer
cable or the speedometer drive gear
Malfunction of the ECU Replace the ECU.
Trouble Symptom 9
Trouble symptom Probable cause Remedy
The cruise main switch indicator lamp Damaged or disconnected bulb of Repair the harness or replace the
does not illuminate cruise main switch indicator lamp part.
(But ASC system is normal.)
Harness damaged or disconnected
27-55
AUTOMATIC SPEED CONTROL (CRUISE)
Trouble Symptom 10
Trouble Symptom 11
Trouble symptom Probable cause Remedy
Malfunction of control function by Malfunction of circuit related to ac- Repair the harness or replace the
ON/OFF switching of ELC 4 A/T ac- celerator switch OFF function
part
celerator switch
malfunction of the ECU
Trouble Symptom 12
Trouble symptom Probable cause Remedy
Overdrive is not canceled during fixed Malfunction of circuit related to over- Repair the harness or replace the
speed driving. drive cancellation, or malfunction of
part
No shift to overdrive during manual
27-56
AUTOMATIC SPEED CONTROL (CRUISE)
CHECKING AUTOMATIC SPEED CONTROL
SETTING
CHECKING AUTOMATIC SPEED CONTROL
MAIN SWITCH
1. Switch ON the MAIN switch.
2. Drive at the desired speed within the range of approximately
40-145 km/h (25-90 mph).
3. Press the SET button (of the control switch).
4. Check that the alarm sounds when the switch is pressed, and
that when it is released the speed is the desired speed.
NOTE
If the vehicle speed decreases to approximately 20 km/h
(12 mph) below the set speed, because of climbing a hill for
example, the automatic speed control will be cancelled.
CHECKING SPEED INCREASE SETTING
1. Set to the desired speed.
2. Press the RESUME button (of the control switch).
3. Check that the alarm sounds when the switch is pressed, that
acceleration continues while the switch is pressed, and that the
speed at the time that the switch is released, becomes the
driving speed.
NOTE
Even if, during acceleration, the vehicle speed reaches or
exceeds the high speed limit [approximately 145 km/h]
acceleration will continue and when the button is released,
the speed at that time ( memorized speed ) will becomes
the high limit of the vehicle speed.
27-57
AUTOMATIC SPEED CONTROL (CRUISE)
CHECKING SPEED REDUCTION SETTING
1. Set to the desired speed.
2. Press the COAST button (of the control switch).
3. Check that the alarm sounds when the switch is pressed, that
deceleration continues while the switch is pressed, and that the
speed at the time that the switch is released becomes the
driving speed.
NOTE
When the vehicle speed reaches the low limit [approxi
mately 40 km/h (12 mph)] during deceleration, the auto-
matic speed control will be cancelled.
CHECKING AUTOMATIC SPEED CONTROL
CANCELLATION
1. Set the automatic speed control.
2. Check that the ASC is cancelled when either of the operations
below is performed.
1) The brake pedal is depressed.
2) The shift lever is moved to the N range.
3) The automatic speed control MAIN switch is switched OFF.
CHECKING RETURN TO THE SET SPEED
BEFORE CANCELLATION
1. Set the automatic speed control.
2. Check that the automatic speed control is cancelled when
either of the operations below is performed.
1) The brake pedal is depressed.
2) The shift lever is moved to the N range.
3. Press the RESUME button (of the control switch) while driving
at a vehicle speed of approximately 40 km/h (25 mph) or high
4. The alarm will sound when the switch is pressed. The ASC will
return to the previously set speed before the automatic speed
control was cancelled.
27-58 AUTOMATIC SPEED CONTROL (CRUISE)
INDIVIDUAL PARTS INSPECTION
STOP LAMP SWITCH
INSPECTION
After operating the stop lamp switch, check for continuity between
the terminals.
CHECKING INHIBITOR SWITCH ( N AND P
POSITIONS)
1. Disconnect the connector.
2. Check that there is continuity between connector (M24) termi-
nals 3 and 5, 3 and 4 when the shift lever is moved to the N
range and the P range.
CHECKING ACTUATOR
1. Disconnect the connector.
2. Measure the resistance value of the clutch coil.
Resistance of clutch coil between connector terminals (3)
and (4)
Standard value : Approx. 55
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