Restraints - Advanced Air Bag Diagnostics

DTC B1046 (No.1046): Passenger Air Bag (2nd stage) Initiator Circuit Resistance Low

Wiring Diagram:

Wiring Diagram

CAUTION:
- Be sure to perform Air Bag Diagnostic System Check:Advanced Air Bag before starting diagnosis according to flow. Air Bag Diagnostic System Check
- When measurement of resistance or voltage is required in this flow, use a tester 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 Intermittent and Poor Connections:Advanced Air Bag. Inspection of Intermittent and Poor Connections
- 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 passenger air bag (inflator) module (2nd stage), harness wiring and connector terminal contact is below a specified value for specified time.

Flow Test Description
STEP 1: Check if malfunction is in passenger air bag (inflator) module (2nd stage).
STEP 2: Check passenger air bag (inflator) module (2nd stage) initiator circuit in air bag lead harness.
STEP 3: Check passenger air bag (inflator) module (2nd stage) initiator circuit in floor harness.

Step 1 - 2:

Step 3:

DTC Troubleshooting