B161B-COURTESY/DOME LAMP CONTROL CIRCUIT LOW

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

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

Possible Causes
(M24) COURTESY LAMPS DRIVER CIRCUIT SHORTED TO GROUND
CLUSTER

1. CHECK FOR AN ACTIVE DTC

1.	Turn the ignition on.

2.	Turn the Courtesy Lamps on.

3.	With the scan tool, read DTCs.

Does the scan display this DTC as active?

Yes

Go To 2

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. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

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

NOTE: Inspect the Dome Lamps. Repair or replace if damaged.

NOTE: Perform this test procedure with all Lamp harness connectors disconnected.

1.	Turn the ignition off.

2.	Disconnect the Dome Lamp harness connectors.

3.	Disconnect the Cluster C2 harness connector.

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

Is the resistance below 5.0 Ohms?

Yes

Repair the (M24) Courtesy Lamp Driver circuit for a short to ground.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

Replace the Cluster in accordance with the Service Information.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

B161B-COURTESY/DOME LAMP CONTROL CIRCUIT LOW

Possible Causes