License Lamp No.1 Inoperative

*LICENSE LAMP NO.1 INOPERATIVE









For a complete Exterior Lamps Circuit Diagram,Schematics and Diagrams.

Diagnostic Test

1. INSPECT THE LICENSE LAMP BULB
NOTE: If both license lamps are inoperative, inspect Fuse 11 located in the Illumination Control Module/IP Fuse Block. If the fuse is open, repair the cause of the open fuse before continuing.

Turn the ignition off.
Remove the License Lamp bulb and inspect for an open filament.
Is the Bulb filament open?

Yes

- Replace the License Lamp bulb. License Plate Lamp - Removal.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- Go to 2

2. MEASURE FUSED B(+) CIRCUIT RESISTANCE




Disconnect the License Lamp No.1 harness connector.
Disconnect the Illumination Control Module harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance between the License Lamp No.1 harness connector and the Illumination Control Module harness connector.
Is the resistance below 5.0 ohms?

Yes

- Go to 3

No

- Repair the Fused B(+) circuit for an open between the License Lamp No.1 and the Illumination Control Module.
- Perform BODY VERIFICATION TEST. Body Verification Test

3. MEASURE LICENSE LAMP VOLTAGE




Connect the Illumination Control Module harness connector.
Turn the ignition on.
Turn the license lamps on.
Measure the voltage between the License Lamp No.1 harness connector cavity 2 and ground.
Is the voltage above 10 volts?

Yes

- Go to 4

No

- Replace the Illumination Control Module. Removal.
- Perform BODY VERIFICATION TEST. Body Verification Test

4. MEASURE LICENSE LAMP GROUND CIRCUIT RESISTANCE




Turn the ignition off.
Turn the license lamps off.
Measure the resistance between the License Lamp No. 1 harness connector cavity 1 and ground.
Is the resistance below 5.0 ohms?

Yes

- Ensure that the License Lamp bulb is installed properly and replace the bulb socket if necessary.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- Repair the License Lamp No.1 ground circuit for an open.
- Perform BODY VERIFICATION TEST. Body Verification Test