Pinpoint Test E: PCA (Line Pressure) Solenoid

TorqShift

PINPOINT TEST E: PCA (LINE PRESSURE) SOLENOID

NOTE: This test should only be used if DTCs P0748, P0960, P0962 or P0963 are present.

NOTE: Read and record all DTCs.

NOTE: Refer to the Transmission Vehicle Harness Connector illustration in Transmission Connector Layouts Transmission Connector Layouts.

NOTE: Refer to the Internal Harness Connector illustration in Transmission Connector Layouts Transmission Connector Layouts.

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E1 CHECK TRANSMISSION VEHICLE HARNESS FOR CONTINUITY


- Ignition OFF.
- Disconnect: PCM C175T.
- Disconnect: Transmission Vehicle Harness C1385.
- Check to make sure the transmission vehicle harness C1385 is fully seated, terminals are fully engaged in the connector and are in good condition before proceeding.
- Measure the resistance between PCM C175T and C1385 using the following chart.









- Is resistance less than 5 ohms?

Yes
GO to E2.

No
REPAIR the open circuit. CLEAR the DTCs. TEST the system for normal operation.

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E2 CHECK TRANSMISSION VEHICLE HARNESS FOR SHORT TO GROUND


- Measure the resistance between PCM C175T, harness side and ground using the following chart.









- Is resistance greater than 10,000 ohms?

Yes
GO to E3.

No
REPAIR the shorted circuit. CLEAR the DTCs. TEST the system for normal operation.

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E3 CHECK THE TRANSMISSION INTERNAL HARNESS FOR AN OPEN


- Drain the transmission fluid.
- Remove the transmission fluid pan.
- Disconnect: Pressure Control Solenoid A (PCA).
- Measure the resistance between transmission internal harness C1385 and the PCA solenoid using the following chart.









- Is resistance less than 5 ohms?

Yes
GO to E4.

No
INSTALL a new transmission harness. CLEAR the DTCs. TEST the system for normal operation.

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E4 CHECK THE TRANSMISSION INTERNAL HARNESS FOR A SHORT TO GROUND


- Measure the resistance between transmission internal harness C1385, component side and ground using the following chart.









- Is resistance greater than 10,000 ohms?

Yes
GO to E5.

No
INSTALL a new transmission harness. CLEAR the DTCs. TEST the system for normal operation.

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E5 CHECK THE PCA RESISTANCE


- Measure the resistance between terminals 1 and 2 at the PCA.




- Is resistance between 4.88-5.48 ohms?

Yes
INSTALL a new PCM.

No
INSTALL a new PCA. CLEAR the DTCs. TEST the system for normal operation.

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