B1B1B
B1B1B-LEFT SIDE CURTAIN SQUIB 1 CIRCUIT SHORT TOGETHERWHEN MONITORED
With the ignition on, the ORC monitors the resistance of the Left Curtain Squib 1 circuits.
SET CONDITION
The ORC has detected low resistance between the Left Curtain Squib 1 circuits.
POSSIBLE CAUSES
- (R3) Left curtain squib 1 line 1 shorted to (R1) left curtain squib 1 line 2
- Left side curtain airbag
- Occupant restraint controller (ORC)
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.
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. LEFT SIDE CURTAIN AIRBAG SHORTED
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Left Side Curtain Airbag connector(s).
WARNING: TO AVOID PERSONAL INJURY OR DEATH, DO NOT PLACE AN INTACT UNDEPLOYED CURTAIN AIRBAG FACE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL INTO THE AIR IF ACCIDENTALLY DEPLOYED.
NOTE: Check connectors - Clean and repair as necessary.
Connect the 8443 Load Tool and appropriate Jumper to the Left Side Curtain Airbag 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 DTCs.
Q: Does the scan tool display: LEFT SIDE CURTAIN AIRBAG SQUIB 1 CIRCUIT SHORT TOGETHER?
YES: Go to 33
NO: Replace the Left Side Curtain Airbag.
Perform AIRBAG SYSTEM VERIFICATION TEST - VER 1. Airbag System Verification Test
3. (R3) LEFT CURTAIN SQUIB 1 LINE 1 SHORTED TO (R1) LEFT CURTAIN SQUIB 1 LINE 2
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 Left Side Curtain Airbag connector(s).
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 resistance between the (R3) Left Curtain Squib 1 Line 1 and (R1) Left Curtain Squib 1 Line 2 at the Left Side Curtain Airbag harness connector.
Q: Is the resistance below 10K ohms?
YES: Repair the (R3) Left Curtain Squib 1 Line 1 shorted to the (R1) Left Curtain Squib 1 Line 2 circuit.
Perform AIRBAG SYSTEM VERIFICATION TEST - VER 1. Airbag System 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 PERSONAL INJURY OR DEATH.
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 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 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 DTC's present?
YES: Select appropriate symptom from Symptom List.
NO: No problem found at this time. Erase all codes before returning vehicle to customer.