B1627

B1627-CARGO LAMP CONTROL CIRCUIT LOW






For a complete wiring diagram refer to Diagrams/Electrical.






Diagnostic Test

1. INTERMITTENT CONDITION

Turn the ignition on.

With the Scan Tool, clear all CCN DTC's.

Turn the Cargo Lamps on.

With the Scan Tool, read the DTC information.

Does the Scan Tool read: B1627-CARGO LAMP CONTROL CIRCUIT LOW?

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.

Measure the voltage on the (L914) Cargo Lamp Switch Signal circuit.

Does the volt meter display 5.0 volts?

Yes

- Replace the Headlamp Switch
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 3

3. INSTRUMENT CLUSTER





Turn the ignition off.

Disconnect the Headlamp Switch connector.

Disconnect the Instrument Cluster C3 harness connector.

Measure the resistance of the (L914) Cargo Lamp Switch Signal circuit to ground.

Is the resistance below 5.0 ohms?

Yes

- Repair short to ground on the (L914) Cargo Lamp Switch Signal 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