Restraints - Advanced Air Bag Diagnostics
DTC B1031 (No.No.1031): Driver Air Bag (1st stage) Initiator Circuit Resistance HighWiring Diagram:
Wiring Diagram
CAUTION:
- Be sure to perform Air Bag Diagnostic System Check: Advanced Air Bag before starting diagnosis according to flow.
- When measurement of resistance or voltage is required in this flow, use a tester along with a correct terminal adapter from special tool (Connector test adapter kit).
- When a check for proper connection is required, refer to Inspection of Intermittent and Poor Connections: Advanced Air Bag.
- If there is open circuit in the air bag wire harness, connector or terminal is found damaged, replace the wire harness, connector and terminal as an assembly. DTC Will Set when The combined resistance of the driver air bag (inflator) module (1st stage), contact coil assembly, harness wiring and connector terminal contact is above a specified value for specified time.
Flow Test Description
Step 1: Check whether malfunction is in contact coil and driver air bag (inflator) module (1st stage) or the others.
Step 2: Check driver air bag (inflator) module (1st stage) initiator circuit.
Step 3: Check whether malfunction is in contact coil or driver air bag (inflator) module (1st stage).
Step 1-2:
Step 2 (Continued)-3:
DTC Troubleshooting
NOTE: Upon completion of inspection and repair work, perform the following items.
- Reconnect all air bag system components and ensure all components are properly mounted.
- Clear DTCs referring to DTC Clearance for SDM: Advanced Air Bag and DTC Clearance for OCM: Advanced Air Bag, if any.
- Repeat Air Bag Diagnostic System Check: Advanced Air Bag to confirm that the trouble has been corrected.