B160A
B160A-PANEL DIMMER INPUT CIRCUIT LOW
For a complete wiring diagram, refer to the Wiring Information.
- When Monitored:
With the Cluster awake.
- Set Condition:
Panel Dimmer Input less than 0.5 of a volt.
1. CHECK FOR AN ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)
1. Turn the ignition on.
2. With the scan tool, read 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.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
2. CHECK OPERATION OF DIMMER SWITCH
1. Turn the ignition off.
2. Disconnect the Dimmer Switch harness connector.
3. Turn the ignition on.
4. With the scan tool, read Cluster DTCs.
Does the scan tool display this DTC as active?
Yes
- Go To 3
No
- Replace the Dimmer Switch. Dimmer Switch - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
3. (E2) PANEL LAMPS DIMMER SIGNAL CIRCUIT SHORTED TO THE (L900) HEADLAMP SWITCH MUX RETURN
1. Turn the ignition off.
2. Disconnect the Cluster C1 harness connector.
3. Measure the resistance between the (E2) Panel Lamps Dimmer Signal circuit and the (L900) Headlamp Switch MUX Return circuit.
Is the resistance below 10K Ohms?
Yes
- Repair the (E2) Panel Lamps Dimmer Signal Circuit for a short to the (L900) Headlamp Switch MUX Return circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
No
- Go To 4
4. (E2) PANEL LAMPS DIMMER SIGNAL CIRCUIT SHORTED TO GROUND
1. Measure the resistance between ground and the (E2) Panel Lamps Dimmer Signal circuit.
Is the resistance below 10K Ohms?
Yes
- Repair the (E2) Panel Lamps Dimmer Signal Circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.
No
- Replace the Cluster. Instrument Cluster - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.