B160A

B160A - Panel Dimmer Input Circuit Low






For a complete wiring diagram, refer to.

• When Monitored: With the cluster awake.

• Set Condition: Panel dimmer input less than 0.5 volts.






Test Step 1 - Check for an active DTC

• Turn the ignition ON.

• With the scan tool, record and erase DTCs.

• Activate the panel dimmer switch.

• Wait 30 seconds.

• With the scan tool, read DTCs.

Is the DTC active?

Yes

• Go to Test Step 2 => [ Test Step 2 - Check Operation of Headlamp Switch ]

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. Refer to => Non
- DTC Based Diagnostics. Body Interior

Test Step 2 - Check Operation of Headlamp Switch






• Turn the ignition OFF.

• Disconnect the headlamp switch harness connector.

• Turn the ignition ON.

• With the scan tool, read cluster DTCs.

Is the DTC active?

Yes

• Go to Test Step 3 => [ Test Step 3 - Check the Panel Lamps Dimmer Signal Circuit for a Short
to Ground ]

No

• Replace the headlamp switch.

• Perform Body Verification Test. Refer to => Non
- DTC Based Diagnostics. Body Interior

Test Step 3 - Check the Panel Lamps Dimmer Signal Circuit for a Short to Ground






• Turn the ignition OFF.

• Disconnect the cluster C2 harness connector.

• Measure the resistance between ground and the panel lamps dimmer signal circuit.

Is the resistance below 10K ohms?

Yes

• Repair the panel lamps dimmer signal circuit for a short to ground.

• Perform Body Verification Test. Refer to => Non
- DTC Based Diagnostics. Body Interior

No

• Replace the instrument cluster.

• Perform Body Verification Test. Refer to => Non
- DTC Based Diagnostics. Body Interior