Restraints - Except Advanced Air Bag Diagnostics

DTC B1018: Passenger Air Bag Initiator Circuit Short To Ground

Wiring Diagram:

Wiring Diagram

CAUTION:
- Be sure to perform Air Bag Diagnostic System Check: Except Advanced Air Bag before starting diagnosis according to flow table.
- When measurement of resistance or voltage is required in this table, use a specified digital multimeter (Refer to Special Tool: Except Advanced Air Bag.) along with a correct terminal adaptor from special tool (Connector test adapter kit).
- When a check for proper connection is required, refer to Inspection of Intermittents and Poor Connections: Except 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.

NOTE: If vehicle is equipped with driver or passenger side air bag ON-OFF switch, perform Air Bag Diagnostic System Check Flow: Except Advanced Air Bag with disconnecting air bag ON-OFF switch from air bag circuit. And if this DTC is not detected under the condition, replace air bag ON-OFF switch and recheck.

DTC Will Set when
The voltage measured at passenger air bag initiator circuit is below a specified value for specified time.

Flow Test Description
Step 1: Check whether malfunction is in passenger air bag (inflator) module.
Step 2: Check passenger air bag (inflator) module initiator circuit in air bag harness.

Step 1-2:

Step 2 (Continued):

DTC Troubleshooting

NOTE: Upon completion of inspection and repair work, perform the following items.
- Reconnect all air bag system components, ensure all components are properly mounted.
- Clear diagnostic trouble codes (Refer to DTC Clearance: Except Advanced Air Bag), if any.
- Repeat Air Bag Diagnostic System Check: Except Advanced Air Bag to confirm that the trouble has been corrected.