Cannot Program New Heated Seat Control Module - keywords communication driver hscm no nocomm program

This PI was superseded to update model years. Please Discard PIC4254.

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Cannot program a new Heated Seat Control Module (HSCM). There will be no communication with the new HSCM. After requesting information and going into TIS the HSCM will not be on the list. At this time the software to program a new HSCM is missing some calibration files.

Note: TIS refers to the HSCM as the Heated Vented Seat Module (HVSM).

1. Verify there is power on circuit 1440 at the module.
2. Verify the ground circuit 550 at the module.
3. Verify the LAN data circuit 506 at the module has continuity to the DLC.
4. If everything in the previous steps check okay, call Techline Customer Service Center (TCSC) for a VCI number.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.