With EVIC

B1428-REMOTE RADIO SWITCH INPUT CIRCUIT STUCK (WITH EVIC)







- When Monitored:
With the ignition on.

- Set Condition:
The Cluster detects a stuck switch state on the (X20) Radio Control MUX (multiplex) circuit for more than 30 seconds.





1. CHECK FOR ACTIVE DTC

NOTE: Before proceeding with this diagnostic procedure, verify the Left and Right Multifunction Switch and Clockspring harness connectors are properly seated and verify proper pin terminal tension. A loose connection at any of these connectors may cause this DTC to set.

1. Turn the ignition on.
2. With the scan tool, read the active DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.

2. LEFT REMOTE RADIO SWITCH
1. Turn the ignition off.
2. Disconnect the Left Remote Radio Switch harness connector.
3. Turn the ignition on.
4. With the scan tool, read the active DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 3

No

- Replace the Left Remote Radio Switch.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. RIGHT REMOTE RADIO SWITCH
1. Turn the ignition off.
2. Disconnect the Right Remote Radio Switch harness connector.
3. Turn the ignition on.
4. With the scan tool, read the active DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 4

No

- Replace the Right Remote Radio Switch.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. (X20) RADIO CONTROL MUX CIRCUIT SHORTED TO GROUND




1. Turn the ignition off.
2. Disconnect the Right Steering Wheel Switch harness connector.
3. Measure the resistance between ground and the (X20) Radio Control MUX circuit.

Is the resistance below 5.0 Ohms?

Yes

- Repair the (X20) Radio Control MUX circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Right Steering Wheel Switch.
- Perform the BODY VERIFICATION TEST. Body Verification Test.