B160A

B160A-PANEL DIMMER INPUT CIRCUIT LOW - BCM





For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
With the ignition and headlamps on.

- Set Condition:
Panel Lamps Dimmer Signal circuit shorted to ground.





Diagnostic Test

1. CHECK FOR AN ACTIVE DTC
Turn the ignition on.
With the scan tool, record and erase DTCs.
Wait 30 seconds.
With the scan tool, read DTCs.
Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.
- PERFORM BODY VERIFICATION TEST - VER 1. Body Verification Test

2. MULTIFUNCTION SWITCH




Turn the ignition off.
Disconnect the Multifunction Switch harness connector.
Turn the ignition on.
With the scan tool, read DTCs.
Does the scan tool display this DTC as active?

Yes

- Go To 3

No

- Replace the Multifunction Switch.
- PERFORM BODY VERIFICATION TEST - VER 1. Body Verification Test

3. (E2) PANEL LAMPS DIMMER SIGNAL CIRCUIT SHORTED TO GROUND




Turn the ignition off.
Disconnect the BCM C5 harness connector.
Measure the resistance between the (E2) Panel Lamps Dimmer Signal circuit and ground.
Is the resistance below 10K ohms?

Yes

- Repair the (E2) Panel Lamps Dimmer Signal circuit for a short to ground.
- PERFORM BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Replace the BCM.
- PERFORM BODY VERIFICATION TEST - VER 1. Body Verification Test