B1B2A-1st ROW DRIVER SEAT BELT PRETENSIONER CIRCUIT OPEN

For a complete wiring diagram Refer to Section 8W.

When Monitored:
With the ignition on, the Occupant Restraint Controller (ORC) monitors the resistance of the Driver Seat Belt Tensioner circuits.
Set Condition:
The ORC has detected an open or high resistance on the Driver Seat Belt Tensioner circuits.

Possible Causes

(R55) DRIVER SEAT BELT TENSIONER LINE 1 CIRCUIT OR (R53) DRIVER SEAT BELT TENSIONER LINE 2 CIRCUIT OPEN

DRIVER 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.

NOTE: When reconnecting airbag system components the Ignition must be turned off and the Battery must be disconnected.

Is the DTC active or stored?

ORC - ACTIVE DTC

Go To2

ORC - STORED DTC

Go To6

2.CHECK FOR OPEN DRIVER SEAT BELT TENSIONER

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

NOTE: Check connectors - Clean and repair as necessary.

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

Does the scan tool display: B1B2A-1st ROW DRIVER SEAT BELT PRETENSIONER CIRCUIT OPEN?

Yes

Go To 3

Replace the Driver Seat Belt Tensioner in accordance with the Service Information.
Perform *ORC VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/RESTRAINTS - DIAGNOSIS AND TESTING)

3.CHECK (R55) DRIVER SEAT BELT TENSIONER LINE 1 CIRCUIT FOR AN OPEN

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

NOTE: Check connectors - Clean and repair as necessary.

Is the resistance below 1.0 ohm?

Yes

Go To 4

Repair the (R55) Driver Seat Belt Tensioner Line 1 circuit for and open.
Perform *ORC VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/RESTRAINTS - DIAGNOSIS AND TESTING)

4.CHECK (R53) DRIVER SEAT BELT TENSIONER LINE 2 CIRCUIT FOR AN OPEN

Is the resistance below 1.0 ohm?

Yes

Go To 5

Repair the (R53) Driver Seat Belt Tensioner Line 2 circuit for and open.
Perform *ORC VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/RESTRAINTS - DIAGNOSIS AND TESTING)

5.REPLACE THE ORC

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.

NOTE: When reconnecting airbag system components the Ignition must be turned off and the Battery must be disconnected.

Repair

Replace the ORC in accordance with Service Information.
Perform *ORC VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/RESTRAINTS - DIAGNOSIS AND TESTING)

6.STORED ORC DTC

WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.

WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.

Are any ACTIVE DTCs present?

Yes

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

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