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Heated Seat Always On

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 Always On

Step Action Yes No
Schematic Reference: Driver Seat Schematics  or Passenger Seat Schematics 
Connector End View Reference: Power Seat Systems Connector End Views  or HVAC Connector End Views
1 Did you review the heated seat operation and perform the necessary inspection? Go to Step 2  Go to Symptoms - Seats 
2 Verify that the Heated Seat Always On 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
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, observe the appropriate Heated Seat Switch parameter in the HVAC Control Module data list.
Does the Heated Seat Switch parameter display Pressed?		 Go to Step 6  Go to Step 4 
4
  1. Disconnect the heated seat relay connector.
  2. Connect a test lamp from the heated seat element supply voltage circuit of the relay connector to a good ground.
Does the test lamp illuminate?		 Go to Step 7  Go to Step 5 
5 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 10  Go to Step 8 
6 Inspect for poor connections at the harness connector of the HVAC control module. 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 10  Go to Step 9 
7 Repair the short to voltage in the heated seat element supply voltage circuit of the seat heating elements. Refer to Wiring Repairs in Wiring Systems.
Did you complete the repair?		 Go to Step 10  -
8 Replace the heated seat relay. Refer to Relay Replacement - Heated Seats - Front .
Did you complete replacement?		 Go to Step 10  -
9 Replace the HVAC control module. Refer to HVAC Control Assembly Replacement in HVAC Systems - Manual.
Did you complete the replacement?		 Go to Step 10  -
10 Operate the system in order to verify the repair
Did you correct the condition?		 System OK Go to Step 2 
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