- Symptoms - Seats

SYMPTOMS - SEATS

IMPORTANT: The following steps must be completed before using the symptom tables.

1. Review the appropriate system description and operation from the following list in order to familiarize yourself with the system functions:
- Power Seats System Description and Operation
- Lumbar Support Description and Operation (w/o A45)Lumbar Support Description and Operation (with A45)Lumbar Support Description and Operation (AM3 w/o A45)Lumbar Support Description and Operation (AM3 with A45)
- Heated/Cooled Seats Description and Operation
- Heated Seats Description and Operation
- Memory Seats Description and Operation
2. If you are diagnosing a seat system with memory (A45) or heated seats, perform the Diagnostic System Check - Power Seat Systems before using the symptom tables in order to verify that all of the following are true:
- There are no DTCs set.
- The control module(s) can communicate via the serial data link. Diagnostic System Check

Visual/physical Inspection
- Inspect for aftermarket devices which could affect the operation of the power seats.
- Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
- Inspect the seat adjuster track for conditions which may cause binding or objects within the seat adjustment range which may obstruct movement or interfere with wiring.

In addition, for the climate control seat (CCS) system, the following conditions can degrade the performance, or cause premature shut down of the climate control seat module (CCSM):
- Dirty heated/cool ventilation module air filter.
- Blockage of an exhaust air duct.
- Misaligned heated/cool ventilation module.
- Incorrect foam installation of the seat cushion or seat back.

Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions.

Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
- Power Seat Inoperative (w/o A45)Power Seat Inoperative (with A45)
- Power Seat Does Not Move Forward/Rearward (w/o A45)Power Seat Does Not Move Forward/Rearward (with A45)
- Power Seat Does Not Tilt Forward (w/o A45)Power Seat Does Not Tilt Forward (with A45)
- Power Seat Does Not Tilt Rearward (w/o A45)Power Seat Does Not Tilt Rearward (with A45)
- Power Seat Does Not Recline (w/o A45)Power Seat Does Not Recline (with A45)
- Memory Seat Feature Inoperative
- Lumbar Support Inoperative (with A45)Lumbar Support Inoperative (w/o A45)
- Lumbar Support Does Not Move In or Out (w/o A45)Lumbar Support Does Not Move In or Out (with A45)
- Lumbar Support Does Not Move Up or Down (w/o A45)Lumbar Support Does Not Move Up or Down (with A45)Lumbar Support Does Not Move Up or Down (AM3 w/o A45)Lumbar Support Does Not Move Up or Down (AM3 with A45)
- Lumbar Massage Inoperative (w/o A45)Lumbar Massage Inoperative (with A45)
- Lumbar Massage Always On
- Heated/Cooled Seats Inoperative
- Heated/Cooled Seat Inoperative - Back Only Mode
- Heated/Cooled Seat Temperature Adjustment Inoperative
- Heated/Cooled Seat Switch Indicator Malfunction
- Heated/Cooled Seat Always On
- Heated Seat Always On
- Heated Seat Inoperative
- Heated Seat Inoperative - Heated Back Mode
- Heated Seat Temperature Adjustment Inoperative
- Heated Seat Switch Low Indicator Malfunction
- Heated Seat Switch Medium Indicator Malfunction
- Heated Seat Switch High Indicator Malfunction
- Heated Seat Switch Mode Indicator Malfunction