B1156

B1156-RIGHT REAR HEATED SEAT SWITCH SUPPLY VOLTAGE CIRCUIT LOW







- When Monitored:
Ignition on, during the heated seat operation.

- Set Condition:
The Right Rear Door Module detects the voltage on the (P198) Heated Seat Switch Indicator Feed circuit or the (P328) Panel Lamps Dimmer circuits are below 2.5 volts for over three seconds when the heated seat switch is turned on.





1. TEST FOR INTERMITTENT CONDITION
1. With the scan tool, record and erase the DTCs.
2. Operate the Right Rear Heated Seat Switch in both positions several times.
3. With the scan tool, read the DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. DISCONNECT THE RIGHT REAR HEATED SEAT SWITCH AND RE-READ DTC




1. Turn the ignition off.
2. Disconnect the Right Rear Heated Seat Switch harness connector.
3. Turn the ignition on.
4. With the scan tool erase the DTCs.
5. Cycle the ignition switch off then back on.
6. With the scan tool, read the DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 3

No

- Replace the Right Rear Heated Seat Switch.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. (P198) HEATED SEAT SWITCH INDICATOR FEED CIRCUIT SHORTED TO GROUND




1. Turn the ignition off.
2. Disconnect the Right Rear Door Module C2 harness connector.

NOTE: Check connectors - Clean and repair as necessary.

3. Measure the resistance between ground and the (P198) Heated Seat Switch Indicator Feed circuit in the Right Rear Heated Seat Switch connector.

Is the resistance below 10k ohms?

Yes

- Repair the (P198) Heated Seat Switch Indicator Feed circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. (P328) PANEL LAMPS DRIVER CIRCUIT SHORTED TO GROUND




1. Measure the resistance between ground and the (P328) Panel Lamps Driver circuit in the Right Rear Heated Seat Switch connector.

Is the resistance below 10k Ohms?

Yes

- Repair the (P328) Panel Lamps Driver circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Right Rear Door Module.
- Perform the BODY VERIFICATION TEST. Body Verification Test.