Inspection and Verification
WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
- Verify the customer concern.
- Visually inspect for obvious signs of mechanical and electrical damage.VISUAL INSPECTION CHART
Mechanical Electrical - Switch(es)
- Seat tracks obstructed or damaged
- Lumbar assembly damaged
- Recliner assembly damaged (backrest frame)
- Thermo-electric device (TED) assembly filter dirty (cushion or backrest)
- Battery junction box (BJB) fuse(s):
- 11 (20A Fusion and Milan) (30A MKZ) (heated seats or passenger climate controlled seat)
- 12 (30A) (driver climate controlled seat)
- 15 (10A) (driver memory seat)
- 31 (30A) (passenger power seat)
- 32 (30A) (driver power seat or driver memory seat)
- Smart junction box (SJB) fuse 28 (10A) (heated seats)
- Wiring harness
- Loose or corroded connections
- Seat control switch(es)
- Power seat motor (seat track)
- Memory seat position switch
- Seat cushion heater
- Seat backrest heater
- Heated seat module
- Lumbar control switch
- Power lumbar motor
- TED assembly (cushion or backrest)
- Power recliner motor
- Driver seat module (DSM)
- Driver door module (DDM)
- HVAC module
- Dual climate controlled seat module (DCSM)
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the concern is with the power seat (non-memory seat) or heated seat and the cause is not visually evident, verify the symptom and Go to Symptom Chart .
- If the concern is with the memory seat or climate controlled seat and the cause is not visually evident, connect the scan tool to the data link connector (DLC).
- If the scan tool does not communicate with the VCM:
- check the VCM connection to the vehicle.
- check the scan tool connection to the VCM.
- refer to MODULE COMMUNICATIONS NETWORK article, No Power To The Scan Tool, to diagnose no communication with the scan tool.
- If the scan tool does not communicate with the vehicle:
- verify the ignition key is in the ON position.
- verify the scan tool operation with a known good vehicle.
- refer to MODULE COMMUNICATIONS NETWORK article to diagnose no response from the PCM.
- Carry out the network test.
- If the scan tool responds with no communication for one or more modules, refer to MODULE COMMUNICATIONS NETWORK article.
- If the network test passes, retrieve and record continuous memory DTCs.
- Clear the continuous DTCs and carry out the self-test diagnostics for the DSM, DDM, DCSM.
- If the DTCs retrieved are related to the concern, go to DRIVER SEAT MODULE (DSM) DTC CHART , DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) DTC CHART or DRIVER DOOR MODULE (DDM) DTC CHART . For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES article.
- If no DTCs related to the concern are retrieved, go to Symptom Chart .
NOTE:
The smart junction box (SJB) may also be identified as the generic electronic module (GEM).
NOTE:
Make sure to use the latest scan tool software release.
NOTE:
The vehicle communication module (VCM) LED prove out confirms power and ground from the DLC are provided to the VCM.