B1046

DTC B1042 / B1046

DTC Detecting Condition and Trouble Area






Circuit Diagram










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.

2. Passenger air bag (inflator) module check

Confirm that ignition mode of keyless push start system is in "OFF".
Disconnect "Q101" or "Q106" connector.
Connect "STEERING WHEEL" (1) of special tool (A), (B) and (C) to "Q101" or "Q106" connector.
Special Tool

(A): 09932-76010

(B): 09932-78310

(C): 09932-75010





Check DTC with ignition mode of keyless push start system in "ON".

Is DTC B1042 or DTC B1046 detected?
YES -
Go to Step 3.
NO -
Replace passenger air bag (inflator) module. Removal and Installation

3. Passenger air bag (inflator) module circuit check

Disconnect "G11" connector.
Release shorting bar in SDM connector inserting release tool included in special tool (A).
Check the following points.
- Resistance between "G11-18" and "G11-19" terminals (DTC B1042): infinity
- Resistance between "G11-7" and "G11-8" terminals (DTC B1046): infinity
Special Tool

(A): 09932-76010





Are they in good condition?
YES -
Substitute a known-good SDM and recheck DTC. SDM Removal and Installation
NO -
Go to Step 4.

4. Instrument panel harness circuit check

Disconnect "G363" connector.
Release shorting bar in SDM connector inserting release tool included in special tool (A).
Check the following points.
- Resistance between "G11-18" and "G11-19" terminal (DTC B1042): infinity
- Resistance between "G11-7" and "G11-8" terminal (DTC B1046): infinity
Special Tool

(A): 09932-76010





Are they in good condition?
YES -
Replace passenger air bag (inflator) module harness.
NO -
Replace instrument panel harness.

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 DTC Clearance
if any DTC is detected.
- Repeat Air Bag Diagnostic System Check Air Bag Diagnostic System Check
to confirm that the trouble has been solved.