For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you review the system operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms - Seats
2 |

1. Turn the ignition to the RUN position.
2. Turn both rear seat heater switches off.

Do the rear heated seats remain off?

--

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3 | Do the rear seat heaters remain on with the ignition in the OFF position? | -- | Go to Step 6 | Go to Step 4
4 | Test and repair for a short to voltage in the rear seat cushion heater relay control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and corect the condition? | -- | Go to Step 8 | Go to Step 5
5 | Replace the rear seat heater switch. Refer to Rear Seat Heater Switch Replacement . Is the repair complete? | -- | Go to Step 8 | --
6 | Test and repair for a short to voltage in the rear seat cushion heater control circuit . Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 8 | Go to Step 7
7 | Replace the rear seat cushion heater relay. Refer to Rear Seat Cushion Heater Relay Replacement . Is the repair complete? | -- | Go to Step 8 | --
8 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3