B1660

B1660-FRONT FOG LAMP CONTROL CIRCUIT HIGH





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

- When Monitored:
With the Front Fog Lamps activated.

- Set Condition:
When the Totally Integrated Power Module (TIPM) detects a high condition in the front fog lamp control circuit.





1. INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all TIPM DTCs.
3. Turn the Front Fog Lamps on.
4. 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. Body Verification Test.

2. LEFT AND RIGHT FRONT FOG LAMP BULBS
1. Turn the ignition off.
2. Inspect the Left and Right Front Fog Lamp Bulb Assemblies.

Are the inoperative bulbs OK?

Yes

- Go To 3

No

- Replace the Inoperative bulb(s).
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. (L89) FRONT FOG LAMP CONTROL CIRCUIT OPEN




1. Turn the ignition off.
2. Disconnect the TIPM C3 harness connector.
3. Disconnect the Left Front Fog Lamp harness connector.
4. Measure the resistance of the (L89) Front Fog Lamp Control Output circuit.

Is the resistance above 5.0 Ohms?

Yes

- Repair the (L89) Left Front Fog Lamp Control circuit for an open condition.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. (L90) RIGHT FRONT FOG LAMP CONTROL CIRCUIT OPEN




1. Disconnect the Right Front Fog Lamp harness connector.
2. Measure the resistance of the (L90) Right Front Fog Lamp Control Output circuit.

Is the resistance above 5.0 Ohms

Yes

- Repair the (L90) Right Front Fog Lamp Control circuit for an open condition.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 5

5. (L89) LEFT FRONT FOG LAMP CONTROL OUTPUT CIRCUIT SHORTED TO VOLTAGE




1. Turn the ignition on.
2. Measure for voltage on the (L89) Front Fog Lamp Control Output circuit.

Is the voltage above 10.0 volts?

Yes

- Repair the (L89) Front Fog Lamp Control Output circuit for a short to voltage condition.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 6

6. (L90) RIGHT FRONT FOG LAMP CONTROL OUTPUT CIRCUIT SHORTED TO VOLTAGE




1. Measure for voltage on the (L90) Right Front Fog Lamp Control Output circuit.

Is the voltage above 10.0 volts?

Yes

- Repair the (L90) Right Front Fog Lamp Control Output circuit for a short to voltage condition.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Totally Integrated Power Module (TIPM).
- Perform the BODY VERIFICATION TEST. Body Verification Test.