2007 Commander XK Factory Service Manual 8 - ELECTRICAL

B1B2D-1st ROW PASSENGER SEAT BELT PRETENSIONER CIRCUIT HIGH





For a complete wiring diagram Refer to Section 8W.



Possible Causes
  
(R56) PASSENGER SEAT BELT TENSIONER LINE 1 CIRCUIT OR (R54) PASSENGER SEAT BELT TENSIONER LINE 2 CIRCUIT SHORTED TO BATTERY
  
PASSENGER SEAT BELT PRETENSIONER
  
ORC
  



Diagnostic Test

1. DETERMINE ACTIVE OR STORED DTC

NOTE: Ensure the battery is fully charged.


NOTE: The scan tool, SRS Airbag Load Tool MRL 8443, and DVOM are required to perform the following test.


Select Active or Stored DTC.

Is the DTC active or stored?

ORC - ACTIVE DTC


ORC - STORED DTC

2. CHECK FOR SHORTED PASSENGER SEAT BELT TENSIONER



WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.


Disconnect the Passenger Seat Belt Tensioner connector.

NOTE: Check connectors - Clean and repair as necessary.


Connect the 8443 Load Tool and appropriate Jumper to the Passenger Seat Belt Tensioner connector.

WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.


With the scan tool, read the active ORC DTCs.

Does the scan tool display: B1B2D 1st ROW PASSENGER SEAT BELT TENSIONER CIRCUIT HIGH?

Yes


No

3. CHECK (R56) PASSENGER SEAT BELT TENSIONER LINE 1 CIRCUIT AND (R54) PASSENGER SEAT BELT TENSIONER LINE 2 CIRCUIT FOR A SHORT TO BATTERY



WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.


Disconnect the 8443 Load Tool and Jumper from the Passenger Seat Belt Tensioner connector.
Disconnect the ORC connectors.

NOTE: Check connectors - Clean and repair as necessary.


Connect the 8443 Load Tool ORC Adaptor to the ORC C1 connector.

WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.


Measure the voltage of the (R56) Passenger Seat Belt Tensioner Line 1 circuit between the ORC adaptor and ground.
Measure the voltage of the (R54) Passenger Seat Belt Tensioner Line 2 circuit between the ORC adaptor and ground.

Is there any voltage present on either circuit?

Yes


No

4. OCCUPANT RESTRAINT CONTROLLER

WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.


WARNING: If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. Failure to take the proper precautions can result in accidental airbag deployment and personal injury or death.





Repair

5. STORED ORC DTC

With the scan tool, record and erase all DTCs from all Airbag System Modules.
If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.

WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.


Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
The following additional checks may assist you in identifying a possible intermittent problem.
Reconnect any disconnected components and harness connector.

WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.


With the scan tool monitor active codes as you work through the following steps.
Wiggle the wiring harness and connectors of the related airbag circuit or component.
If codes are related to the Driver Airbag circuits, rotate the steering wheel from stop to stop.
If only stored codes return continue the test until the problem area has been isolated.
In the previous steps you have attempted to recreate the conditions responsible for setting active DTC in question.

Are any ACTIVE DTCs present?

Yes
  • Select the appropriate diagnostic procedure from the Table of Contents in this section.


No
  • No problem found at this time. Erase all codes before returning vehicle to customer