Operation CHARM: Car repair manuals for everyone.

B1629






B1629-CARGO LAMP CONTROL CIRCUIT OPEN





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

- When Monitored:
With the Cargo Lamps activated

- Set Condition:
The CCN detects the Cargo Lamp Driver circuit is open.





1. INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all CCN DTCs.
3. Turn the Cargo Lamps on.
4. With the scan tool, read the DTC information.

Does the Scan tool read: B1629-CARGO LAMP CONTROL CIRCUIT OPEN?

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. Body Verification Test.

2. HEADLAMP SWITCH




1. Disconnect the Headlamp Switch connector.
2. Turn the ignition on.
3. Measure the voltage on the (L914) Cargo Lamp Driver circuit.

Does the Volt Meter display 5.0 volts?

Yes

- Replace the Headlamp Switch.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. INSTRUMENT CLUSTER




1. Turn the ignition off.
2. Disconnect the Instrument Cluster C3 harness connector.
3. Measure the resistance of the (L914) Cargo Lamp Switch Signal circuit.

Is the resistance below 5.0 Ohms?

Yes

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

No

- Repair open in the (L914) Cargo Lamp Switch Signal circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.