Pinpoint Test C : TCS (Transmission Control Switch) Does Not Operate Correctly

External Controls

Pinpoint Test

Refer to Wiring Diagram Set 29, Transmission Controls for schematic and connector information Electrical Diagrams.

Refer to Wiring Diagram Set 37, Shift Interlock for schematic and connector information Electrical Diagrams.

PINPOINT TEST C : TCS (Transmission Control Switch) DOES NOT OPERATE CORRECTLY

C1 TEST THE IC (Instrument Cluster)

- Connect the scan tool.

- Using the scan tool, monitor the TCS_DEPRES PID while cycling the TCS (Transmission Control Switch).

Does the TCS_DEPRES PID cycle from yes to no?

Yes
REFER to Instrument Panel, Gauges and Warning Indicators.

No
GO to C2.

C2 CHECK BJB (Battery Junction Box) FUSE 27 (10A)

- Ignition OFF.

- Check fuse: Battery Junction Box (BJB) 27 (10A).

Is the resistance less than 5 ohms?

Yes
GO to C3.

No
GO to C4.

C3 TEST THE TCS (Transmission Control Switch) POWER CIRCUIT FOR AN OPEN

- Disconnect: Selector Lever Harness C2096.

- Disconnect: BJB (Battery Junction Box) Fuse 27 (10A).

- Measure the resistance between selector lever harness C2096-6, circuit CBP30 (YE/BU) and the output side of BJB (Battery Junction Box) fuse 27 (10A).





Is the resistance less than 5 ohms?

Yes
GO to C5.

No
REPAIR circuit CBP30 (YE/BU). RECONNECT all components. TEST the system for normal operation.

C4 TEST THE TCS (Transmission Control Switch) POWER CIRCUIT FOR A SHORT TO GROUND

- Disconnect: Selector Lever Harness C2096.

- Disconnect: BJB (Battery Junction Box) Fuse 27 (10A).

- Measure the resistance between selector lever harness C2096-6, circuit CBP30 (YE/BU) and ground.





Is the resistance greater than 10,000 ohms?

Yes
GO to C6.

No
REPAIR circuit CBP30 (YE/BU). RECONNECT all components. TEST the system for normal operation.

C5 TEST THE TCS (Transmission Control Switch) SIGNAL CIRCUIT FOR AN OPEN

- Disconnect: PCM Transaxle C175T.

- Measure the resistance between selector lever harness C2096-5, circuit CET34 (BN/GN) and PCM C175T-31, circuit CET34 (BN/GN).





Is the resistance less than 5 ohms?

Yes
GO to C7.

No
REPAIR circuit CET34 (BN/GN). RECONNECT all components. TEST the system for normal operation.

C6 TEST THE TCS (Transmission Control Switch) SIGNAL CIRCUIT FOR A SHORT TO GROUND

- Measure the resistance between selector lever harness C2096-5, circuit CET 34 (BN/GN) and ground.





Is the resistance greater than 10,000 ohms?

Yes
GO to C7.

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

C7 TEST THE TCS (Transmission Control Switch)

- Measure the resistance between selector lever C2096-5 and C2096-6 component side, while cycling the TCS (Transmission Control Switch).





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

Yes
INSTALL a new PCM. TEST the system for normal operation.

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