B160B

B160B-PANEL DIMMER INPUT CIRCUIT HIGH





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

- When Monitored:
With the ignition on.

- Set Condition:
Panel Dimmer signal is greater than 4.8 volts.





1. CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, record and erase DTCs.
3. Activate the Panel Dimmer Switch.
4. Wait 30 seconds.
5. With the scan tool, read DTCs.

Is the DTC 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 the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK THE (E2) PANEL LAMPS DIMMER SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE




1. Turn the ignition off.
2. Disconnect the Headlamp Switch harness connectors.
3. Turn the ignition on.
4. Measure the voltage on the (E2) Panel Lamps Dimmer Signal circuit.

Is the voltage greater than 10.0 volts?

Yes

- Repair the (E2) Panel Lamps Dimmer Signal circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK THE OPERATION OF THE PANEL LAMPS DIMMER SWITCH




1. Turn the ignition off.
2. Connect a jumper wire at the Headlamp Switch harness connector between the (E2) Panel Lamps Dimmer Signal circuit and ground.
3. Turn the ignition on.
4. With the scan tool, read DTCs.

Does the Scan tool display-B160A-PANEL DIMMER INPUT CIRCUIT LOW?

Yes

- Replace the Headlamp Switch.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. CHECK THE (E2) PANEL LAMPS DIMMER SIGNAL CIRCUIT FOR AN OPEN




1. Turn the ignition off.
2. Disconnect the Cluster C3 harness connector.
3. Measure the resistance of the (E2) Panel Lamps Dimmer Signal circuit between the Cluster C3 harness connector and the Headlamp Switch harness connector.

Is the resistance above 5.0 Ohms?

Yes

- Repair the (E2) Panel Lamps Dimmer Signal circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Cluster.
- Perform the BODY VERIFICATION TEST. Body Verification Test.