Passenger Air Bag Initiator Circuit Short to Ground

DTC B1043: Passenger Air Bag Initiator Circuit Short to Ground

Wiring Diagram

Refer to Passenger Air Bag Initiator Circuit Resistance High DTC B1041: Passenger Air Bag Initiator Circuit Resistance High:Except Advanced Air Bag.

DTC Will be Set when

The voltage measured at passenger air bag (initiator) circuit is below a specified value for specified time.

Flow Test Description

Step 2: Check if malfunction is in passenger air bag (inflator) module.

Step 3: Check passenger air bag (inflator) module initiator circuit. (Between "Q01" and "Q02")

Step 4: Check passenger air bag (inflator) module initiator circuit. (Between "G67" and "G47" or "G67" and "G46")

DTC Troubleshooting

1.
Was "Air Bag Diagnostic System Check" performed?
YES -
Go to Step 2.
NO -
Go to Air Bag Diagnostic System Check Air Bag Diagnostic System Check:Except Advanced Air Bag.

2. With ignition switch OFF, disconnect passenger air bag (inflator) module connector.
Check proper connection to passenger air bag (inflator) module at terminals in "Q02" connector.
If OK, then connect special tools (A), (B) and (D) to "Q02" connector.
Special Tool

(A): 09932-76010

(B): 09932-75010

(D): 09932-78310





Check SDM DTC.

With ignition switch ON, is DTC B1043 indicated?
YES -
Go to Step 3.
NO -
Turn ignition switch OFF. Replace passenger air bag (inflator) module referring to Removal and Installation Passenger Air Bag (Inflator) Module Removal and Installation:Except Advanced Air Bag.

3. With ignition switch OFF, disconnect "G67" connector located near the glove box.
Check proper connection to instrument panel harness connector at terminal "G67-1" and "G67-2".
If OK, then connect special tools (B) and (C) to "G67" connector disconnected in Step 1).
Special Tool

(B): 09932-75010

(C): 09932-77320





Check SDM DTC.

With ignition switch ON, is DTC B1043 indicated?
YES -
Go to Step 4.
NO -
"BLU/RED" or "YEL/RED" circuit shorted to ground. (Between "Q01" and "Q02" connectors)

4. With ignition switch OFF, disconnect special tools (B) and (C) from "G67" connector and SDM connector "G47" or "G46" from SDM respectively.
Release shorting bar in SDM connector inserting release tool (1) included in special tool (A).
Measure resistance between "G47-3" and body ground, and between "G47-4" and body ground [A] or between "G46-5" and body ground, and between "G46-6" and body ground [B].
Special Tool

(A): 09932-76010

(B): 09932-75010

(C): 09932-77320





Is resistance infinity?
YES -
Substitute a known-good SDM and recheck.
NO -
"BLU/RED" or "YEL/RED" circuit shorted to ground. (Between "G67" and "G47" connectors or between "G67" and "G46" connectors).

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, if any. DTC Clearance
- Repeat Air Bag Diagnostic System Check Air Bag Diagnostic System Check:Except Advanced Air Bag
to confirm that the trouble has been corrected.