Inspection and Verification

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

Verify the customer concern by operating the power seat or heated seat functions.

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) Seat cushion or backrest trim cover damaged (heated seat heater mats)	Battery Junction Box (BJB) fuse 19 (30A) (power seat) Smart Junction Box (SJB) fuses: 18 (20A) (heated seats) 43 (10A) (heated seats) Wiring harness Loose or corroded connector(s) Seat control switch Power seat motor assembly (seat track) Heated seat relay Cushion or backrest heater mat Front Controls Interface Module (FCIM) (if equipped with heated seats and navigation) HVAC module (if equipped with heated seats)

Mechanical

Electrical

Switch(es)
Seat tracks obstructed or damaged
Lumbar assembly damaged
Recliner assembly damaged (backrest frame)
Seat cushion or backrest trim cover damaged (heated seat heater mats)

Battery Junction Box (BJB) fuse 19 (30A) (power seat)
Smart Junction Box (SJB) fuses:
- 18 (20A) (heated seats)
- 43 (10A) (heated seats)
Wiring harness
Loose or corroded connector(s)
Seat control switch
Power seat motor assembly (seat track)
Heated seat relay
Cushion or backrest heater mat
Front Controls Interface Module (FCIM) (if equipped with heated seats and navigation)
HVAC module (if equipped with heated seats)

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, verify the symptom and GO to SYMPTOM CHART .

NOTE: Make sure to use the latest scan tool software release.

If the concern is with the heated seat and the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).

NOTE: The Vehicle Communication Module (VCM) LED prove out confirms power and ground from the DLC are provided to the VCM .

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 PINPOINT TEST W: NO POWER TO THE SCAN TOOL , No Power To The Scan Tool, to diagnose no power to the scan tool.
If the scan tool does not communicate with the vehicle:
- verify the ignition is ON.
- verify the scan tool operation with a known good vehicle.
- refer to PINPOINT TEST A: THE PCM DOES NOT RESPOND TO THE SCAN TOOL 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 PINPOINT TEST T: NO HIGH SPEED CONTROLLER AREA NETWORK (HS-CAN) COMMUNICATION, ALL MODULES ARE NOT RESPONDING .
- If the network test passes, retrieve and record on-demand and Continuous Memory Diagnostic Trouble Codes (CMDTCs).
Clear the continuous DTCs and carry out the self-test diagnostics for the HVAC module.
If the DTCs retrieved are related to the concern, go to HVAC MODULE DTC CHART . For all other DTCs, refer to DIAGNOSTIC TROUBLE CODE (DTC) CHART .
If no DTCs related to the concern are retrieved, GO to SYMPTOM CHART .