B1B29
B1B29-1ST ROW SEAT BELT PRETENSIONER CIRCUIT HIGHB1B29 - 1st Row Seat Belt Pretensioner Circuit High:
WHEN MONITORED
With the ignition on, the ORC monitors the voltage on the Driver Seat Belt Tensioner circuits.
SET CONDITION
The ORC detects high voltage on the Driver Seat Belt Tensioner circuits.
POSSIBLE CAUSES
- (R55) Driver seat belt tensioner line 1 or (R53) driver seat belt tensioner line 2 shorted to battery
- Driver seat belt tensioner
- Occupant restraint controller
Diagnostic Test
1. DETERMINE ACTIVE OR STORED DTC
NOTE:
- Ensure the battery is fully charged.
- The Scan Tool, SRS Airbag Load Tool MRL 8443 and DVOM are required to perform the following test.
- When reconnecting airbag system components the Ignition must be turned off and the Battery must be disconnected.
Select Active or Stored DTC.
Q: Is the DTC active or stored?
ORC - ACTIVE DTC
Go To 2
ORC - STORED DTC
Go To 5
2. DRIVER SEAT BELT TENSIONER SHORTED TO BATTERY
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Driver Seat Belt Tensioner connector(s).
NOTE: Check connectors - Clean and repair as necessary.
Connect the 8443 Load Tool and appropriate Jumper to the Driver Seat Belt Tensioner connector(s).
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
With the scan tool, read the active Occupant Restraint Controller DTC's.
Q: Does the scan tool display 1st ROW DRIVER SEAT BELT PRE-TENSIONER CIRCUIT HIGH?
YES: Go To 3
NO: Replace the Driver Seat Belt Tensioner.
Perform AIRBAG SYSTEM VERIFICATION TEST - VER 1. Airbag System Verification Test
3. (R55) DRIVER SEAT BELT TENSIONER LINE 1 OR (R53) DRIVER SEAT BELT TENSIONER LINE 2 SHORTED 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 Driver Seat Belt Tensioner harness connector.
Disconnect the ORC harness connector(s).
NOTE: Check connectors - Clean and repair as necessary.
Connect the 8443 Load Tool ORC Adaptor to the ORC harness connector.
Measure the voltage on the (R55) Driver Seat Belt Tensioner Line 1 circuit between the Driver Seat Belt Tensioner harness connector and ground.
Measure the voltage on the (R53) Driver Seat Belt Tensioner Line 2 circuits between the Driver Seat Belt Tensioner harness connector and ground.
Q: Is there any voltage on either circuit?
YES: Repair (R55) Driver Seat Belt Tensioner Line 1 or (R53) Driver Seat Belt Tensioner Line 2 shorted to battery.
Perform AIRBAG SYSTEM VERIFICATION TEST - VER 1. Airbag System Verification Test
NO: Go to 4
4. OCCUPANT RESTRAINT CONTROLLER
WARNING:
- TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
- IF THE AIRBAG CONTROL MODULE 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.
If there are no possible causes remaining, view repair.
Repair
Replace the Occupant Restraint Controller.
Perform AIRBAG SYSTEM VERIFICATION TEST - VER 1. Airbag System Verification Test
5. STORED ORC DTC
With the scan tool, record and erase all DTC's 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.
Q: Are any ACTIVE DTCs present?
YES: Select appropriate symptom from Symptom List.
NO: No problem found at this time. Erase all codes before returning vehicle to customer.