B161A

B161A-COURTESY/DOME LAMP CONTROL CIRCUIT





For a complete wiring diagram refer to Diagrams/Electrical.

- When Monitored:
- Continuously
- Set Condition:
- When the Instrument Cluster detects a short to battery on the Control circuit.





Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION

Turn the ignition on.

Clear all Instrument Cluster DTC's

Turn the Courtesy Lamps on.

With the scan tool, read DTC's.

Does the scan tool read: B161A-COURTESY/DOME LAMP CONTROL CIRCUIT?

Yes

- Go To 2

No

- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

2. CHECK THE (M24) COURTESY LAMPS DRIVER CIRCUIT FOR A SHORT TO GROUND





Turn the ignition off.

Disconnect the Instrument Cluster C2 harness connector.

Measure the resistance between the (M24) Courtesy Lamp Driver circuit and ground.

Is the resistance below 5.0 ohms?

Yes

- Repair the (M24) Courtesy Lamp Driver circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 3

3. CHECK THE (M24) COURTESY LAMPS DRIVER CIRCUIT FOR AN OPEN





Turn the ignition off.

Disconnect the Instrument Cluster C2 harness connector.

Turn the ignition on.

Measure the voltage of the (M24) Courtesy Lamp Driver circuit.

Is the voltage below 10.0 volts?

Yes

- Repair the (M24) Courtesy Lamp Driver circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Replace the Instrument Cluster.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test