ïż
DTC P0745 [FN4A-EL]
DTC P0745 [FN4A-EL]
B3E050219090W20
DTC P0745
Pressure control solenoid malfunction
DETECTION CONDITION
• If the PCM detects either of the following conditions, the PCM determines that pressure control solenoid circuit has a malfunction.
- Pressure control solenoid voltage stuck 0 V after engine start
- Pressure control solenoid voltage stuck B+ after engine start
Diagnostic support note:
• This is a continuous monitor (CCM).
• The MIL does not illuminate if PCM detects above malfunction conditions during the first drive cycle.
• A PENDING CODE is not available.
• FREEZE FRAME DATA is not available.
• The AT warning light illuminates.
• The DTC is stored in the PCM memory.
POSSIBLE CAUSE
• Pressure control solenoid malfunction
• Open circuit in wiring harness between pressure control solenoid terminal B and ATX terminal I
• Open circuit in wiring harness between ATX terminal I and PCM terminal 1AV
• Short to ground in wiring harness between ATX terminal D and PCM terminal 1AF
• Short to power supply in wiring harness between ATX terminal D and PCM terminal 1AF
• Open circuit in wiring harness between pressure control solenoid terminal A and ATX terminal D
• Open circuit in wiring harness between ATX terminal D and PCM terminal 1AF
• Damaged connector between pressure control solenoid and PCM
• PCM malfunction
Diagnostic procedure
STEP
INSPECTION
ACTION
1
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Verify related Service Bulletins and or/on-line repair information availability.
• Is any related repair information available?
Yes
Perform repair or diagnosis according to the available repair information.
• If the vehicle is not repaired, go to the next step.
No
Go to the next step.
2
INSPECT ATX CONNECTOR FOR POOR CONNECTION
• Turn the ignition switch to the LOCK position.
• Disconnect the ATX connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is the connection normal?
Yes
Go to the next step.
No
Repair or replace the connector and/or terminals, then go to Step 10.
3
INSPECT RESISTANCE
• Inspect the resistance between ATX terminals D and I (transaxle case side).
• Is the resistance within 2.4-7.3 ohms?
(See Resistance Inspection (On-Vehicle Inspection).)
Yes
Go to Step 6.
No
Go to the next step.
4
INSPECT PRESSURE CONTROL SOLENOID CONNECTOR FOR POOR CONNECTION
• Disconnect the pressure control solenoid connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is the connection normal?
Yes
Go to the next step.
No
Repair or replace the connector and/or terminals, then go to Step 10.
5
INSPECT RESISTANCE
• Inspect the resistance between the pressure control solenoid terminals A and B.
• Is the resistance within 2.4-7.3 ohms?
(See Resistance Inspection (Off-Vehicle Inspection).)
Yes
Replace the solenoid wiring harness, then go to Step 10.
No
Verify pressure control solenoid installation.
• If solenoid installed correctly, replace the pressure control solenoid, then go to Step 10.
(See SOLENOID VALVE REMOVAL/INSTALLATION.)
6
INSPECT PCM CONNECTOR FOR POOR CONNECTION
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is the connection normal?
Yes
Go to the next step.
No
Repair or replace the connector and/or terminals, then go to Step 10.
7
INSPECT ATX CONNECTOR CIRCUIT FOR OPEN CIRCUIT
• Inspect for continuity between the PCM (wiring harness-side) and ATX connector (wiring harness-side).
- PCM terminal 1AF and ATX terminal D
- PCM terminal 1AV and ATX terminal I
• Is there continuity between terminals?
Yes
Go to the next step.
No
Repair or replace the wiring harness, the go to Step 10.
8
INSPECT ATX CONNECTOR CIRCUIT FOR SHORT TO POWER SUPPLY
• Turn the ignition switch to the ON position (engine off).
• Inspect the voltage at ATX terminal D (wiring harness-side).
• Is the voltage 0 V?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then go to Step 10.
9
INSPECT PCM CIRCUIT FOR SHORT TO GROUND
• Turn the ignition switch to the LOCK position.
• Inspect for continuity between ATX terminal D (wiring harness-side) and body ground.
• Is there continuity?
Yes
Repair or replace the wiring harness, then go to the next step.
No
Go to the next step.
10
VERIFY TROUBLESHOOTING OF DTC P0745 COMPLETED
• Make sure to reconnect all the disconnected connectors.
• Clear the DTC from the memory using the WDS or equivalent.
• Make sure to wait more than 1 s after turning the ignition switch to the ON position.
• Are any DTCs present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [Z6].)
No
No concern is detected. Go to the next step.
11
VERIFY AFTER REPAIR PROCEDURE
• Perform the "After Repair Procedure".
(See AFTER REPAIR PROCEDURE [FN4A-EL].)
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.
Wyszukiwarka
Podobne podstrony:
B3E050001030T03B3E050219090W02B3E050319090W05B3E050219090T09B3E050319090W11B3E050001030T01B3E050319090W34B3E050219090W09B3E050219090W01B3E050219090W16B3E050219090T03B3E050219090T07B3E050219090W12B3E050319090W19B3E050219090W06B3E050319090W28B3E050219090W27B3E050219090W13B3E050319090W18B3E050219090W29więcej podobnych podstron