Pinpoint Test B: TCS Does Not Operate Correctly

External Controls

Pinpoint Tests

PINPOINT TEST B: TCS DOES NOT OPERATE CORRECTLY (VEHICLES EQUIPPED WITH A 2.5L ENGINE ONLY)

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B1 TEST THE IC

- Connect the scan tool.
- Using the scan tool, monitor the TCS PID while cycling the Transmission Control Switch (TCS).
- Does the TCS PID cycle from depressed to not depressed?

Yes
REFER to Instrumentation, Message Center, and Warning Chimes Testing and Inspection for diagnosis of the Instrument Cluster (IC) illumination.

No
GO to B2.

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B2 TEST BJB FUSE 47 (10A)

- Check fuse: Battery Junction Box (BJB) fuse 47 (10A).
- Is the resistance less than 5 ohms?

Yes
GO to B3.

No
GO to B6.

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B3 CHECK FOR VOLTAGE AT THE SELECTOR LEVER CONNECTOR

- Disconnect: Selector Lever Electrical C3233.
- Ignition ON.
- Measure the voltage between selector lever harness C3233-7, circuit CBK03 (GY), vehicle harness side and ground.




- Is the voltage greater than 10 volts?

Yes
GO to B5.

No
GO to B4.

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B4 TEST THE TCS POWER SUPPLY CIRCUIT FOR AN OPEN

- Ignition OFF.
- Disconnect: BJB fuse 47 (10A).
- Measure the resistance between the output side of BJB fuse 47 (10A) and selector lever harness C3233-7 circuit CBK03 (GY), vehicle harness side.




- Is the resistance less than 5 ohms?

Yes
Install a new BJB.

No
REPAIR circuit CBK03 (GY) for an open. TEST the system for normal operation.

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B5 TEST THE TCS

- Measure the resistance between selector lever harness C3533 pins 6 and 7, component side, while cycling the TCS.




- Is the resistance less than 5 ohms when pressed and greater than 10,000 ohms when released?

Yes
GO to B7.

No
INSPECT the selector lever wiring harness for damage. REPAIR the wiring harness as required. If the selector lever wiring harness is not damaged, INSTALL a new selector lever knob. REFER to Selector Lever Knob Selector Lever Knob. TEST the system for normal operation.

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B6 TEST THE TCS SIGNAL CIRCUIT FOR A SHORT TO GROUND

- Ignition OFF.
- Disconnect: PCM C175T.
- Measure the resistance between selector lever harness C3233-6, circuit CET34 (BN/GN) and ground.




- Is the resistance greater than 10,000?

Yes
REPAIR circuit CBK03 (GY) for a short to ground. INSTALL a new fuse. TEST the system for normal operation.

No
REPAIR circuit CET34 (BN/GN) for a short to ground. INSTALL a new fuse. TEST the system for normal operation.

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B7 TEST THE TCS SIGNAL CIRCUIT FOR AN OPEN CIRCUIT

- Disconnect: PCM C175T.
- Measure the resistance between selector lever harness C3233-6, circuit CET34 (BN/GN) and PCM C175T-31, circuit CET34 (BN/GN).




- Is the resistance less then 5 ohms?

Yes
INSTALL a new PCM. REFER to Electronic Engine Controls - 2.5L Service and Repair.

No
REPAIR circuit CET34 (BN/GN) for an open. TEST the system for normal operation.

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