DTC P0C2B-11: Auxiliary Transmission Fluid Pump Control Module Feedback Signal Circuit Short to Ground [12/2021 - 10/2023]: Procedure

Pre-procedure1

1. Disconnect the engine stop and start ECU connectors.
2. Disconnect the oil pump with motor assembly connector.

   Procedure1

3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   B38-27 (NOPM) - C35-2 (OPST)	Always	Below 1 Ω
   B37-6 (OP21) - C35-4 (+B)	Always	Below 1 Ω
   B38-27 (NOPM) - Body ground and other terminals	Always	10 kΩ or higher
   C35-2 (OPST) - Body ground and other terminals	Always	10 kΩ or higher
   B37-6 (OP21) - Body ground and other terminals	Always	10 kΩ or higher
   C35-4 (+B) - Body ground and other terminals	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

   Post-procedure1

4. None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

Pre-procedure1

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the oil pump with motor assembly connector.
2. Turn the ignition switch to ON.

   Procedure1

3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   B38-27 (NOPM) - B38-6 (DGND)	Ignition switch ON	10 to 14 V

   Result

   Proceed to
   OK
   NG

   Post-procedure1

4. None

Result: 

OK 

REPLACE OIL PUMP WITH MOTOR ASSEMBLY. Refer to  PROCEDURE - Step 10 

Result: 

NG 

REPLACE ENGINE STOP AND START ECU. Refer to  REMOVAL [12/2021 - ]