Inspection and Verification

1. 1.
   
   Verify the customer concern by operating the power seat, memory seat or climate controlled seat functions.

1. 2.
   
   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) TED assembly filter dirty (cushion or backrest)

BJB fuse(s): 22 (30A) (passenger seat control switch) 67 (40A) (DCSM) 70 (30A) (LH and RH third row power-fold seat) 73 (20A) (rear heated seat module output) 74 (30A) (driver seat control switch or DSM output) BCM fuse(s): 7 (7.5A) (DSM logic, seat control switch) 18 (10A) (third row power-fold seats relay enable) 34 (10A) (rear heated seat module logic) Wiring harness Loose or corroded connector(s) Seat control switch Lumbar control switch Memory SET switch Power seat motor (seat track) Power lumbar motor (lumbar assembly) TED assembly (cushion or backrest) Power recliner motor (backrest frame) Third row power-fold seat relay(s) DSM DCSM FCIM Second row seat cushion heater mat Second row seat backrest heater mat Rear heated seat module RHVAC

1. 3.
   
   If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

1. 4.
   
   If the concern is with the power seat (non-memory seat) or the power lumbar and the cause is not visually evident, verify the symptom and GO to Symptom Chart .

1. 5.
   
   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 DLC.

NOTE: The VCM LED prove out confirms voltage and ground from the DLC are provided to the VCM.
1. 6.
   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 , No Power To The Scan Tool, to diagnose no power to the scan tool.

1. 7.
   
   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 Module Communications Network to diagnose no response from the PCM.

1. 8.
   
   Carry out the network test.
   • If the scan tool responds with no communication for one or more modules, refer to Module Communications Network .
   • If the network test passes, retrieve and record on-demand and CMDTCs.

1. 9.
   
   Clear the CMDTCs and carry out the self-test diagnostics for the DSM or DCSM.

1. 10.
   
   If the DTCs retrieved are related to the concern, go to DSM DTC Chart, BCM DTC Chart or DCSM DTC Chart. For all other DTCs, refer to Multifunction Electronic Modules .

1. 11.
   
   If no DTCs related to the concern are retrieved, GO to Symptom Chart .