DTC P0C2C-888: Auxiliary Transmission Fluid Pump Control Module Feedback Signal Range / Performance; DTC P0C2C-889: Auxiliary Transmission Fluid Pump Control Module Feedback Signal Range / Performance: Procedure

CHECK HYBRID VEHICLE CONTROL ECU (CHECK WAVEFORM)

Connect an oscilloscope to the hybrid vehicle control ECU terminals specified in the table below, and measure the waveform.

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Item	Contents
Terminal	A74-33(OPST) - A75-7(E1)
Equipment Setting	5 V/DIV., 5 ms./DIV.
Condition	Power switch on (IG)

Result

Result	Proceed to
There are no interruptions or distortions in the waveform. (Amount of noise is small.)	A
There is an interruption or distortion in the waveform. (Amount of noise is large.)	B

B → ELIMINATE CAUSE OF NOISE

A: Go to next step

CHECK CONNECTOR CONNECTION CONDITION (OIL PUMP MOTOR CONTROLLER CONNECTOR)

NOTE:

Before disconnecting the connectors, confirm that they are properly connected by checking that the locking claws are engaged and that the connectors cannot be pulled out.

Check the connections of the oil pump motor controller connectors.

The connectors are connected securely and there are no contact problems.

HINT:

For connector A, when connecting it, insert it with the locking lever in the raised position. Rotate the lever downward and make sure that the connector is pulled into its socket. When the locking lever is in its fully closed position, a click will be heard as its locking claws engage. After the click is heard, pull up on the connector to confirm that it is properly connected.

NG → CONNECT SECURELY

OK: Go to next step

CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR)
1. Check the connections of the hybrid vehicle control ECU connectors.
  OK
  
  The connectors are connected securely and there are no contact problems.
NG → CONNECT SECURELY

OK → See step 4
REPLACE OIL PUMP MOTOR CONTROLLER. Refer to COMPONENTS [09/2012 - ]