Pinpoint Test B : TCS (Transmission Control Switch) Does Not Operate Correctly (Vehicles Equipped With A Engine Only)

External Controls

Pinpoint Tests

Refer to Wiring Diagram Set 29, Transmission Controls -Aisin AW21 for schematic and connector information. [1][2]Diagrams By Number

Refer to Wiring Diagram Set 30, Transmission Controls-6F35 for schematic and connector information. [1][2]Diagrams By Number

Refer to Wiring Diagram Set 37, Shift Interlock for schematic and connector information. [1][2]Diagrams By Number

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

B1 CHECK THE IC (Instrument Cluster)

- 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 Instrument Panel, Gauges and Warning Indicators for diagnosis of the Instrument Cluster (IC) illumination.

No
GO to B2.

B2 CHECK 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.

B3 CHECK THE POWER CIRCUIT FOR VOLTAGE

- Disconnect: Selector Lever 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.

B4 CHECK THE POWER CIRCUIT FOR AN OPEN

- Ignition OFF.

- Disconnect: BJB (Battery Junction Box) fuse 47 (10A).

- Measure the resistance between the output side of BJB (Battery Junction Box) 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 (Battery Junction Box).

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

B5 CHECK THE TCS (Transmission Control Switch)

- Measure the resistance between selector lever harness C3533 pins 6 and 7, 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
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 . TEST the system for normal operation.

B6 CHECK THE 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.

B7 CHECK THE SIGNAL CIRCUIT FOR AN OPEN

- 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.

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