Heated Seat Inoperative
WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
Heated Seat Inoperative
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Driver Seat Schematics or Passenger Seat Schematics Connector End View Reference: Power Seat Systems Connector End Views or Body Control System Connector End Views DEFINITION: This test assumes that Load Shed Level 1 or Level 2 Heated Seats is not enabled. |
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| 1 | Did you perform the Diagnostic System Check - Power Seat Systems? | - | Go to Step 2 | Go to Diagnostic System Check - Power Seat Systems |
| 2 | Verify that the Heated Seat Inoperative complaint is present. Does the heated seat system operate as described in the system description and operation? |
- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 |
|
- | Go to Step 12 | Go to Step 4 |
| 4 | Does the Heated Seat Relay parameter display On? | - | Go to Step 5 | Go to Step 16 |
| 5 |
|
- | Go to Step 8 | Go to Step 6 |
| 6 | Connect a test lamp from the battery positive voltage circuit of the heated seat relay to a good ground. Does the test lamp illuminate? |
- | Go to Step 7 | Go to Step 18 |
| 7 |
|
- | Go to Step 13 | Go to Step 17 |
| 8 |
|
5 Ω | Go to Step 9 | Go to Step 14 |
| 9 |
|
5 Ω | Go to Step 10 | Go to Step 15 |
| 10 | Test the heated seat element supply voltage circuit between the heated seat relay and the seat cushion heating element for an open. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 24 | Go to Step 11 |
| 11 | Test the heated seat element supply voltage circuit between the seat cushion and the seat back heating element for a short to ground or an open. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 24 | Go to Step 19 |
| 12 | Test the heated seat relay control circuit for a short to ground. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 24 | Go to Step 13 |
| 13 | Inspect for poor connections at the harness connector of the heated seat relay. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 24 | Go to Step 20 |
| 14 | Inspect for poor connections at the harness connector of the heated seat cushion heating element/temperature sensor. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 24 | Go to Step 21 |
| 15 | Inspect for poor connections at the harness connector of the seat back heating element. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 24 | Go to Step 21 |
| 16 | Inspect for poor connections at the harness connector of the HVAC control module. Refer to Testing for Intermittent Conditions and Poor Connections
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 24 | Go to Step 22 |
| 17 | Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 24 | Go to Step 23 |
| 18 | Repair the short to ground or open in the battery positive voltage circuit of the heated seat relay. Refer to Wiring Repairs
in Wiring Systems. Did you complete the repair? |
- | Go to Step 24 | - |
| 19 | Repair the open in the ground circuit of the seat heating elements. Refer to Wiring Repairs
in Wiring Systems. Did you complete the repair? |
- | Go to Step 24 | - |
| 20 | Replace the heated seat relay. Refer to Relay Replacement - Heated Seats - Front . Did you complete the replacement? |
- | Go to Step 24 | - |
| 21 | Replace the appropriate seat cushion heating element/temperature sensor or seat back heating element. Refer to Seat Back Heater Element Replacement - Front and to Seat Cushion Heater Element Replacement - Front . Did you complete the replacement? |
- | Go to Step 24 | - |
| 22 | Replace the HVAC control module. Refer to HVAC Control Assembly Replacement
in HVAC Systems-Manual. Did you complete the replacement? |
- | Go to Step 24 | - |
| 23 |
IMPORTANT:
Perform the Programing/RPO Configuration for the replacement BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration
in Body Control System. Replace the body control module (BCM). Refer to Body Control Module Replacement
in Body Control System.Did you complete the replacement? |
- | Go to Step 24 | - |
| 24 | Operate the system in order to verify the repair. Did you correct the condition? |
- | System OK | Go to Step 2 |