B161B

B161B-COURTESY/DOME LAMP OUTPUT CIRCUIT SHORT TO GROUND

B161B-Courtesy/Dome Lamp Output Circuit Short To Ground:

WHEN MONITORED

SET CONDITION

POSSIBLE CAUSES
- (M24) Courtesy lamp driver circuit short to ground
- Instrument cluster

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

DIAGNOSTIC TEST

1. INTERMITTENT CONDITION




Turn the ignition on.
With the Scan Tool, clear all CCN DTC's.
Turn the Dome Lamps on.
With the Scan Tool, read the DTC information.

Q: Does the Scan Tool read: B161B-COURTESY/DOME LAMP OUTPUT CIRCUIT SHORT TO GROUND?

YES: Go To 2
NO: The condition that caused the symptom is currently not present.
Inspect the related wiring for a possible intermittent condition.
Look for any chafed, pierced, pinched, or partially broken wires.
Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test

2. HEADLAMP SWITCH
Disconnect the Headlamp Switch connector.
Turn the Ignition on.
Using the Scan Tool.

Q: Does the Scan Tool display Headlamp Switch 5.0 volts?

YES: Go To 3
NO: Replace the Headlamp Switch.

3. INSTRUMENT CLUSTER/DRIVER CIRCUIT SHORT




Turn the ignition on.
Disconnect the Instrument Cluster C3 connector.
Measure the resistance of the (M24) Courtesy Lamp Driver circuit to ground.

Q: Is the resistance below 5.0 ohms?

YES: Repair the (M24) Courtesy lamp Driver circuit. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace the Instrument Cluster. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test