U0236

U0236-NO RESPONSE COLUMN-LOCK MODULE

For a complete wiring diagram, refer to the Wiring Information.






1. DETERMINING IF DIAGNOSTIC TROUBLE CODE (DTC) IS CURRENT
1. With the scan tool, read and record the WCM DTCs.
2. With the scan tool, erase the WCM DTCs

NOTE: Perform the following test several times to ensure the DTC is current.

3. Turn the ignition off.
4. Wait 10 seconds.
5. Turn the ignition on.
6. With the scan tool, read the WCM DTCs.

Does the scan tool display the DTC that was previously erased?

Yes

- Go To 2

No

- The conditions that set the DTC are no longer present. Inspect the wiring harness and related connectors for damage, pin push out or corrosion.

2. (A935) FUSED B(+) CIRCUIT OPEN
1. Turn the ignition off.
2. Disconnect the Steering Column-Lock Module harness connector.
3. Using a 12-volt test light connected to ground, probe the (A935) Fused B(+) circuit.

Does the test light illuminate brightly?

Yes

- Go To 3

No

- Repair the (A935) Fused B(+) circuit for an open.
- Perform the WCM VERIFICATION TEST. Wireless Control Module (WCM) Verification Test

3. (A306) FUSED B(+) CIRCUIT OPEN
1. Using a 12-volt test light connected to ground, probe the (A306) Fused B(+) circuit.

Does the test light illuminate brightly?

Yes

- Go To 4

No

- Repair the (A306) Fused B(+) circuit for an open.
- Perform the WCM VERIFICATION TEST. Wireless Control Module (WCM) Verification Test

4. (Z906) GROUND CIRCUIT OPEN
1. Using a 12-volt test light connected to 12-volts, check the (Z906) Ground circuit.

Does the test light illuminate brightly?

Yes

- Go To 5

No

- Repair the (Z906) Ground circuit for an open.
- Perform the WCM VERIFICATION TEST. Wireless Control Module (WCM) Verification Test

5. (D508) COM-LIN (TPM) LAN CIRCUIT OPEN
1. Disconnect the SKREEM/WCM harness connector.
2. Measure the resistance of the (D508) COM-LIN (TPM) LAN circuit between the SKREEM/WCM harness connector and the Steering Column-Lock Module connector.

Is resistance below 5.0 ohms?

Yes

- Replace the Sentry Key Remote Entry Module/Steering Column-Lock Module.
- Perform the WCM VERIFICATION TEST. Wireless Control Module (WCM) Verification Test

No

- Repair the (D508) COM-LIN (TPM) LAN circuit for an open.
- Perform the WCM VERIFICATION TEST. Wireless Control Module (WCM) Verification Test