Diagnostic Test

WARNING: This page is about a different car, the 2010 Dodge Charger and 2010 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

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 step 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. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
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 step 3
  No
  - Replace the Front Fog Lamp bulbs as necessary.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
CHECK THE (L89) FRONT FOG LAMP CONTROL OUTPUT CIRCUIT FOR AN OPEN

Fig 1: Checking Front Fog Lamp Control Output Circuit For An Open
Courtesy of CHRYSLER LLC
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 Left and Right Front Fog Lamp harness connectors and the TIPM C1 harness connector.
  Are the resistances 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. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
CHECK THE (L89) FRONT FOG LAMP CONTROL OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE

Fig 2: Measuring Voltage Between Front Fog Lamp Control Output Circuit & Ground
Courtesy of CHRYSLER LLC
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. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Replace the TIPM in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .