B1660

B1660 - Front Fog Lamp Control Circuit High

- When Monitored:
With the front fog lamps active.

- Set Condition:
When the Totally Integrated Power Module (TIPM) detects a high condition.






1. INTERMITTENT CONDITION

1. Ignition on, engine not running.
2. With the scan tool, erase the TIPM DTCs.
3. Turn the front fog lamps on.
4. With the scan tool, read the TIPM DTCs.

Does the scan tool display DTC B1660-FRONT FOG LAMP CONTROL CIRCUIT HIGH?

Yes
- Go To 2

No
- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST.

2. INSPECT THE FRONT FOG LAMP BULBS

1. Turn the ignition off.
2. Inspect the left and right front fog lamp bulb assemblies.

Are the bulbs OK?

Yes
- Go To 3

No
- Replace the front fog lamp bulbs as necessary.
- Perform the BODY VERIFICATION TEST.

3. CHECK THE (L89) FRONT FOG LAMP CONTROL OUTPUT CIRCUIT FOR AN OPEN






1. Disconnect the TIPM C1 harness connector.
2. Disconnect the left and right front fog lamp harness connectors.
3. Measure the resistance of the (L89) Front Fog Lamp Control Output circuit between the right front fog lamp harness connector and the TIPM C1 harness connector.

Is the resistance below 5.0 Ohms?

Yes
- Go To 4

No
- Repair the open in the (L89) Front Fog Lamp Control output circuit.
- Perform the BODY VERIFICATION TEST.

4. CHECK THE (L89) FRONT FOG LAMP CONTROL OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE






1. Ignition on, engine not running.
2. Measure the voltage between the (L89) Front Fog Lamp Control Output circuit and ground.

Is there any voltage present?

Yes
- Repair the short to voltage in the (L89) Front Fog Lamp Control Output circuit.
- Perform the BODY VERIFICATION TEST.

No
- Replace the TIPM in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST.