B1608

B1608-HEADLAMP SWITCH INPUT CIRCUIT HIGH

For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
- With the ignition on.
- Set Condition:
- The SCM detects a high condition.





Diagnostic Test

1. INTERMITTENT CONDITION
Turn the ignition on.
With the Scan Tool, clear all CCN DTC's.
Turn the Headlamps on.
With the Scan Tool, read the DTC information.
Does the Scan Tool read: B1608-HEADLAMP SWITCH INPUT CIRCUIT HIGH?

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. LIGHTING MULTIFUNCTION SWITCH
Turn the ignition off.
Using the correct service procedure, remove the Lighting Multi-Function Switch.
Measure the internal resistance of the Multifunction Switch between cavities 4 and 7. Move the switch position from OFF to AUTO while measuring.
OFF = 1047 ohms
PARK LAMP = 383 ohms
HEADLAMP = 195 ohms
AUTO = 0 ohms
Is the resistance in each position correct?

Yes

- Replace the Steering Control Module.
- Perform the BODY VERIFICATION TEST - VER 1.Body Verification Test

No

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