Left Heated Seat Inoperative

LEFT HEATED SEAT INOPERATIVE

Left Heated Seat Inoperative:

POSSIBLE CAUSES
- Left seat back/cushion heater element
- Left heated seat output circuit open
- Left heated seat ground circuit open
- Heated seat module

DIAGNOSTIC TEST

1. TEST THE LEFT HEATED SEAT




Turn the ignition off.
Disconnect the Heated Seat Module harness connector.

NOTE: Check connector - Clean/repair as necessary.

Connect a fused jumper wire from B(+) to cavity 3 (LHD) of the Heated Seat Module harness connector.

Q: With the jumper wire connected, does the Left Heated Seat warm up?

YES: Replace the Heated Seat Module. Perform BODY VERIFICATION TEST. Body Verification Test
NO: Go to 2

2. MEASURE LEFT HEATED SEAT OUTPUT CIRCUIT RESISTANCE




Disconnect the Left Heated Seat Back/Heated Seat Cushion harness connector.

NOTE: Check connector - Clean/repair as necessary.

Measure the resistance of the Left Heated Seat Output circuit from the Heated Seat Module harness connector to the Left Heated Seat Back/Heated Seat Cushion harness connector.

Q: Is the resistance below 5.0 ohms?

YES: Go to 3
NO: Repair the Left Heated Seat Output circuit for an open. Perform BODY VERIFICATION TEST. Body Verification Test

3. MEASURE LEFT HEATED SEAT GROUND CIRCUIT RESISTANCE




Measure the resistance between ground and the Left Heated Seat Ground circuit.

Q: Is the resistance below 5.0 ohms?

YES: Replace the Left Heated Seat Back/Heated Seat Cushion Element. Perform BODY VERIFICATION TEST. Body Verification Test
NO: Repair the Left Heated Seat Ground circuit for an open. Perform BODY VERIFICATION TEST. Body Verification Test