DTC P1814 [WL-C, WE-C (MT)]

id0302a2800700

DTC P1814

RFW Lock solenoid valve circuit/short to battery
DETECTION CONDITION
•  Short to power circuit has been detected in the Lock solenoid valve wiring harness.
POSSIBLE CAUSE
•  Lock solenoid valve malfunction
•  Connector or terminal malfunction
•  Short to power supply in wiring harness between Lock solenoid valve terminal B and PCM terminal 253
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT LOCK SOLENOID VALVE CONNECTOR FOR POOR CONNECTION
•  Turn the engine switch off.
•  Disconnect the Lock solenoid valve connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, and corrosion).
•  Is there any malfunction?
Yes
Repair or replace the terminal, then go to Step 5.
No
Go to the next step.
2
INSPECT PCM CONNECTOR FOR POOR CONNECTION
•  Turn the engine switch off.
•  Disconnect the PCM connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, and corrosion).
•  Is there any malfunction?
Yes
Repair or replace the terminal, then go to Step 5.
No
Go to the next step.
3
INSPECT LOCK SOLENOID VALVE CIRCUIT SHORT TO POWER SUPPLY
•  Turn the engine switch to the ON position (Engine off).
•  Measure the voltage between the following circuits:
―  Lock solenoid valve terminal B (wiring harness-side) and body ground
•  Is the voltage B+?
Yes
Repair or replace the wiring harness for short to power supply, then go to the Step 5.
No
Go to the next step.
4
INSPECT LOCK SOLENOID VALVE
•  Inspect the Lock solenoid valve.
•  Is there any malfunction?
Yes
Replace the Lock solenoid valve, then go to the next step.
No
Go to the next step.
5
VERIFY TROUBLESHOOTING OF DTC P1814 COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Start the engine.
•  Shift the transfer select lever.
•  Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [WL-C, WE-C].)
(See PCM REMOVAL/INSTALLATION (U.K. Specs.) [WL-C, WE-C].)
No
Go to the next step.
6
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “After Repair Procedure“.
•  Are any DTCs present?
Yes
Go to the applicable DTC troubleshooting.
(See DTC TABLE [WL-C, WE-C (Thailand, General (L.H.D. R.H.D.) specs.)].)
(See DTC TABLE [WL-C, WE-C (Australian, European (L.H.D. U.K.) specs.)].)
No
Troubleshooting completed.