Diagnostic Test

WARNING: This page is about a different car, the 2009 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

INTEGRATED POWER MODULE
NOTE: Prior to testing, check and inspect that all applicable fuses are functional and working properly.
1. Turn the ignition off.
2. Replace the Fog Lamp relay with and known good relay.
3. Using the scan tool, clear all IPM DTCs.
4. Turn the Fog Lamps ON then OFF.
5. Using the scan tool, read the DTCs.
  Does the scan tool read: B1661-FRONT FOG LAMP CONTROL CIRCUIT OPEN?
  
  Yes
  - Replace the Integrated Power Module in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
  No
  - Test complete.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .