B1B2C

B1B2C-1st ROW PASSENGER SEAT BELT PRETENSIONER CIRCUIT LOW






For a complete wiring diagram refer to Diagrams/Electrical.

- When Monitored:

With the ignition on, the ORC monitors the resistance of the Passenger Seat Belt Tensioner circuits.

- Set Condition:

The ORC has detected low resistance of the Passenger Seat Belt Tensioner circuits.






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

- Go To 2

ORC - STORED DTC

- Go To 5

2. PASSENGER SEAT BELT TENSIONER CIRCUIT SHORTED TO GROUND

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

Disconnect the Passenger Seat Belt Tensioner harness connector(s).

NOTE: Check connectors - Clean and repair as necessary.

Connect the 8443 Load Tool and appropriate Jumper to the Passenger Seat Belt Tensioner harness connector(s).

WARNING: To avoid serious or fatal injury, turn the ignition on, then reconnect the battery.

With the scan tool, read the active Occupant Restraint Controller DTC.

Does the scan tool display 1st ROW PASSENGER SEAT BELT PRETENSIONER CIRCUIT LOW?

Yes

- Go To 3

No

-

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

- Replace the Passenger Seat Belt Tensioner.
- Perform *ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test

3. (R56) PASSENGER SEAT BELT TENSIONER LINE 1 OR (R54) PASSENGER SEAT BELT TENSIONER LINE 2 SHORTED TO GROUND






WARNING: To avoid serious or fatal injury, 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 harness connector.

Disconnect the Occupant Restraint Controller harness connector(s).

NOTE: Check connectors - Clean and repair as necessary.

Connect the Load Tool 8443-25 ORC Adaptor to the ORC harness connector.

Measure the resistance of the (R56) Passenger Seat Belt Tensioner Line 1 circuit between the Passenger Seat Belt Tensioner harness connector and ground.

Measure the resistance of the (R54) Passenger Seat Belt Tensioner Line 2 circuit between the Passenger Seat Belt Tensioner harness connector and ground.

Is the resistance below 10K ohms on either circuit?

Yes

- Repair (R56) Passenger Seat Belt Tensioner Line 1 or (R54) Passenger Seat Belt Tensioner Line 2 shorted to ground.
- Perform *ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test

No

- Go To 4

4. OCCUPANT RESTRAINT CONTROLLER

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

Disconnect the 8443 Load Tool ORC Adaptor from the ORC harness connector.

If there are no possible causes remaining, view repair.

Repair

- Replace the Occupant Restraint Controller.
- Perform *ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test

5. STORED ORC DTC

With the scan tool, record and erase all DTC from all Airbag System Modules.

If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.

WARNING: To avoid serious or fatal injury, 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 serious or fatal injury, 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 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 DTC present?

Yes

- Select appropriate symptom from Symptom List.

No

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