DTC P0C2C:00 [FW6A-EL]

id050225832600

DTC P0C2C:00

Electric AT oil pump rotation malfunction
DETECTION CONDITION
•  The actual electric AT oil pump rotation speed under the following condition is 100 rpm or less for a continuous 10 s:
―  Electric AT oil pump rotation speed command value is 500 rpm or more.
―  Electric AT oil pump relay is ON.
―  DTC P181F:00 is not recorded.
Diagnostic support note
•  The MIL does not illuminate.
•  The AT warning light does not illuminate.
•  PENDING CODE is available.
•  FREEZE FRAME DATA is not available.
•  The DTC is stored in the TCM memory.
FAIL-SAFE FUNCTION
•  Inhibits i-stop control.
POSSIBLE CAUSE
•  Electric AT oil pump connector or terminals malfunction
•  TCM connector or terminals malfunction
•  Short to ground in wiring harness between electric AT oil pump terminal B and TCM terminal 1N
•  Short to power supply in wiring harness between electric AT oil pump terminal B and TCM terminal 1N
•  Open circuit in wiring harness between electric AT oil pump terminal B and TCM terminal 1N
•  Electric AT oil pump malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
2
INSPECT ELECTRIC AT OIL PUMP CONNECTOR CONDITION
•  Switch the ignition to off.
•  Disconnect the electric AT oil pump connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 7.
No
Go to the next step.
3
INSPECT TCM CONNECTOR CONDITION
•  Disconnect the TCM connector.
•  Visually inspect the TCM connector and terminals.
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 7.
No
Go to the next step.
4
INSPECT ELECTRIC AT OIL PUMP CIRCUIT FOR SHORT TO GROUND
•  Verify that the electric AT oil pump and TCM connectors are disconnected.
•  Inspect for continuity between electric AT oil pump terminal B (wiring harness-side) and body ground.
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground, then go to Step 7.
No
Go to the next step.
5
INSPECT ELECTRIC AT OIL PUMP CIRCUIT FOR SHORT TO POWER SUPPLY
•  Verify that the electric AT oil pump and TCM connectors are disconnected.
•  Switch the ignition to ON.
•  Measure the voltage at the electric AT oil pump terminal B (wiring harness-side).
•  Is there any voltage?
Yes
Repair or replace the wiring harness for a possible short to power supply, then go to Step 7.
No
Go to the next step.
6
INSPECT ELECTRIC AT OIL PUMP CIRCUIT FOR OPEN CIRCUIT
•  Verify that the electric AT oil pump and TCM connectors are disconnected.
•  Switch the ignition to off.
•  Visually inspect the wiring harness between electric AT oil pump terminal B (wiring harness-side) and TCM terminal 1N (wiring harness-side).
•  Is there any malfunction?
Yes
Repair or replace the wiring harness for a possible open circuit, then go to the next step.
No
Replace the electric AT oil pump, then go to the next step.
(See ELECTRIC AT OIL PUMP REMOVAL/INSTALLATION [FW6A-EL].)
7
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC using the M-MDS.
•  Perform the following procedure to ensure that the DTC has been resolved:
1.  Operates the i-stop.
•  Perform the DTC inspection using the M-MDS.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [FW6A-EL].)
No
DTC troubleshooting completed.