B1627

B1627-CARGO LAMP OUTPUT CIRCUIT SHORT TO GROUND

B1627-Cargo Lamp Output Circuit Short To Ground:

WHEN MONITORED

SET CONDITION

POSSIBLE CAUSES
- Headlamp Switch
- (M22) Cargo Lamp Output 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 Cargo Lamps on.
With the Scan Tool, read the DTC information.

Q: Does the Scan Tool read: B1627-CARGO 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, read DTC's.

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

YES: Go To 3
NO: Replace the Headlamp Switch. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

3. Instrument Cluster




Turn the ignition off.
Disconnect the Headlamp Switch connector.
Disconnect the Instrument Cluster C3 connector.
Measure the resistance of the of the (M22) Cargo Lamp Output circuit to ground.

Q: Is the resistance below 5.0 ohms?

YES: Repair the Cargo Lamp Output circuit. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace the Instrument Cluster. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test