Diagnostic Fault Information
WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Heated/Cooled Seats Inoperative
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
| Battery Positive Voltage | 1 | 1 | -- | -- |
| Ignition 3 Voltage | 1 | 1 | -- | -- |
| Driver Seat Blower Supply Voltage | B103D | B272E | B272E | -- |
| Driver Seat Back Blower Supply Voltage | B103D | B272C, B272E, B2730 | B272E | -- |
| Driver Seat Cushion Blower Supply Voltage | B103D | B272C, B2729 | B272E | -- |
| Passenger Seat Blower Supply Voltage | B111D | B272F | B272F | -- |
| Passenger Seat Back Blower Supply Voltage | B111D | B272D, B727B, B272F | B272F | -- |
| Passenger Seat Cushion Blower Supply Voltage | B111D | B272A, B272D | B272F | -- |
| Driver Heated Seat Back Only Mode Switch Signal | 6 | 6 | 6 | -- |
| Driver Heated Seat Cool Switch Signal | 5 | 5 | 5 | -- |
| Driver Seat Back Cushion Switch Signal | 4 | 4 | 4 | -- |
| Driver Seat Back Temperature Sensor Signal | B272C, B2730 | B1AA1, B272C | B1AA1, B272C | -- |
| Driver Seat Cushion Temperature Sensor Signal | B272C, B2729 | B1AA0, B272C | B1AA0, B272C | -- |
| Left Heated/Cooled Seat Mode Signal | 2 | 2 | 2 | -- |
| Passenger Heated Seat Back Only Mode Switch Signal | 6 | 6 | 6 | -- |
| Passenger Heated Seat Cool Switch Signal | 5 | 5 | 5 | -- |
| Passenger Seat Back Cushion Switch Signal | 4 | 4 | 4 | -- |
| Passenger Seat Back Temperature Sensor Signal | B272B, B272D | B1AA3, B272D | B1AA3, B272D | -- |
| Passenger Seat Cushion Temperature Sensor Signal | B272A, B272D | B1AA2, B272D | B1AA2, B272D | -- |
| Right Heated/Cooled Seat Mode Signal | 3 | 3 | 3 | -- |
| Driver Seat Back Heated and Cool Ventilation Module Cool Control | B103A | B272C, 5, 6 | -- | -- |
| Driver Seat Back Heated and Cool Ventilation Module Heat Control | B103A, 5 | B272C, 5, 6 | -- | -- |
| Driver Seat Cushion Heated and Cool Ventilation Module Cool Control | B103A | B272C, 5 | -- | -- |
| Driver Seat Cushion Heated and Cool Ventilation Module Heat Control | B103A, 5 | B272C | 5 | -- |
| Driver Seat Back Blower Speed Control | B19A8 | B272C, B272E, B2730 | B19A4 | -- |
| Driver Seat Cushion Blower Speed Control | B19A7 | B272C, B2729 | B19A3 | -- |
| Passenger Seat Back Heated and Cool Ventilation Module Cool Control | B111A | B272D, 5 | -- | -- |
| Passenger Seat Back Heated and Cool Ventilation Module Heat Control | B111A, 5 | B272D, 5, 6 | -- | -- |
| Passenger Seat Cushion Heated and Cool Ventilation Module Cool Control | B111A | B272D, 5 | -- | -- |
| Passenger Seat Cushion Heated and Cool Ventilation Module Heat Control | B111A, 5 | B272D | 5 | -- |
| Passenger Seat Back Blower Speed Control | B19A6 | B272B, B272D, B272F | B19A2 | -- |
| Passenger Seat Cushion Blower Speed Control | B19A5 | B272A, B272D | B19A1 | -- |
| Low Reference -- Driver Heated and Cooled Seat Switch | -- | 2 | -- | -- |
| Low Reference -- Driver Seat Back Blower | -- | B272C, B272E, B2730 | -- | -- |
| Low Reference -- Driver Seat Back and Cushion Blower | -- | B272E | -- | -- |
| Low Reference -- Driver Seat Cushion Blower | -- | B272C, B2729 | -- | -- |
| Low Reference -- Driver Seat Back Temperature Sensor | -- | B1AA1, B272C | -- | -- |
| Low Reference -- Driver Seat Cushion Temperature Sensor | -- | B1AA0, B272C | -- | -- |
| Low Reference -- Passenger Heated and Cooled Seat Switch | -- | 3 | -- | -- |
| Low Reference -- Passenger Seat Back Blower | -- | B272B, B272D, B272F | -- | -- |
| Low Reference -- Passenger Seat Back and Cushion Blower | -- | B272F | -- | -- |
| Low Reference -- Passenger Seat Cushion Blower | -- | B272A, B272D | -- | -- |
| Low Reference -- Passenger Seat Back Temperature Sensor | -- | B1AA3, B272D | -- | -- |
| Low Reference -- Passenger Seat Cushion Temperature Sensor | -- | B1AA2, B272D | -- | -- |
| Ground -- Climate Control Seat Module | -- | 1 | -- | -- |
| 1. Driver and passenger heated/cooled seats are inoperative, the CCSM does not communicate with the scan tool. 2. Driver heated/cooled seat is inoperative 3. Passenger heated/cooled seat is inoperative 4. Seat heat mode is inoperative 5. Seat cool mode is inoperative 6. Heated/cooled seat inoperative - Back Only Mode |
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