2007 Commander XK Factory Service Manual 8 - ELECTRICAL

B1096-FRONT RIGHT SEAT HEATER CONTROL CIRCUIT LOW





For a complete wiring diagram Refer to Section 8W.



Possible Causes
 
(P188) RIGHT SEAT HEATER B(+) DRIVER SHORTED TO GROUND
 
SEAT HEATER ELEMENT PIGTAIL HARNESS SHORTED
 
SEAT CUSHION HEATER ELEMENT SHORTED
 
SEAT BACK HEATER ELEMENT SHORTED
 
HEATED SEAT MODULE
 




Diagnostic Test

1. VERIFY THAT DTC B1096-FRONT RIGHT SEAT HEATER CONTROL CIRCUIT LOW IS ACTIVE

With the scan tool, record and erase DTC's
Operate the Heated Seat Switch in both positions several times.
With the scan tool, read DTC's.

Does the DTC B1096 FRONT RIGHT SEAT HEATER CONTROL CIRCUIT LOW reset?

Yes


No

2. DISCONNECT RIGHT SEAT INLINE CONNECTOR AND READ DTC'S



Disconnect the right seat inline connector.

NOTE: Check connectors - Clean and repair as necessary.


With the scan tool, erase HSM DTC's
Operate the Heated Seat Switch in both positions several times.
With the scan tool, read DTC's.

Does the scan tool display the same DTC?

Yes


No

3. CHECK THE (P188) RIGHT SEAT HEATER B(+) DRIVER FOR A SHORT TO GROUND



Measure between the (P188) Right Seat Heater B(+) Driver circuit at the seat inline connector (seat side) and the seat frame for a short to ground.

Is the resistance below 1k ohms?

Yes


No

4. CHECK THE RIGHT CUSHION PAD HEATER RESISTANCE



Disconnect the Right Cushion Pad Heater 2 – way connector.
Check the resistance of the cushion heater element by measuring between the (P188) Right Seat Heater B(+) Driver and the Ground circuit at the right cushion pad connector (component side).

Was the resistance below 3.5 ohms?

Yes


No

5. CHECK THE RIGHT SEAT BACK HEATER RESISTANCE



Disconnect the RIght Seat Back Heater 2 – way connector.

NOTE: Check connectors - Clean and repair as necessary.


Check the resistance of the seat back heater element by measuring between the (P188) Right Seat Heater B(+) Driver and the Ground circuit at the right seat back connector (component side).

Is the resistance below 4.0 ohms?

Yes


No

6. Check the (P188) Right Seat Heater B(+) Driver circuit for a short to ground



Disconnect the Heated Seat Module connector.

NOTE: Check connectors - Clean and repair as necessary.


Measure the (P188) Right Seat Heater B(+) Driver circuit to ground at the HSM connector. Cavity 4 for LHD and 3 RHD.

Is the resistance below 5.0 ohms?

Yes


No