B1660

B1660-FRONT FOG LAMP CONTROL CIRCUIT HIGH





For a complete wiring diagram refer to Diagrams/Electrical.

- When Monitored:
- With the Front Fog Lamps activated.
- Set Condition:
- When the FCM detects a HIGH condition.





Diagnostic Test

1.INTERMITTENT CONDITION

Turn the ignition on.

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

Actuate the Front Fog Lamps.

With the Scan Tool read the DTC information.

Does the Scan Tool read: B1660-FRONT FOG LAMP CONTROL 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.FRONT FOG LAMP RELAY

Turn the ignition off.

Remove and install a known good relay in place of the Front Fog Lamp Relay.

Do the Front Fog Lamps operate normally?

Yes

- Replace the Front Fog Lamp Relay.
- Perform the BODY VERIFICATION TEST VER 1. Body Verification Test

No

- Go To 3
-

3.FRONT CONTROL MODULE





Turn the ignition off.

Remove the Front Fog Lamp Relay from the MPD.

Remove the FCM from the Module Power Distribution.

Measure the voltage of the (L139) Front Fog Lamp Relay Output circuit and ground.

Is the voltage above 1.0 volts?

Yes

- Replace the Module Power Distribution center.
- Perform the BODY VERIFICATION TEST-VER 1. Body Verification Test

No

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