Diagnostic Test

INTERMITTENT CONDITION
NOTE: Prior to testing, check and inspect that all applicable fuses are functional and working properly.
1. Turn the ignition on.
2. With the scan tool, clear all TIPM DTCs.
3. Turn the Fog Lamps on.
4. With the scan tool read the DTC information.
  Does the scan tool read: B1659-FRONT FOG LAMP CONTROL CIRCUIT LOW?
  
  Yes
  - Go to Step 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. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
FRONT FOG LAMP BULBS
1. Turn the ignition off.
2. Inspect the Front Fog Lamp Bulb assembly for a short condition.
  Is the inoperative bulb OK?
  
  Yes
  - Go to Step 3.
  No
  - Replace the inoperative bulb in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
(L89) FOG LAMP CONTROL CIRCUIT
1. Turn the ignition off.
2. Disconnect the TIPM C1 harness connector.
3. Measure the resistance between ground and the (L89) Fog Lamp Control circuit.
  Is the resistance below 5.0 Ohms?
  
  No
  - Replace the Totally Integrated Power Module (TIPM) in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  Yes
  - Repair the (L89) Fog Lamp Control circuit for a short to ground condition.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .