B1052

DTC B1052 / B1056

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. Seat belt pretensioner check

Confirm that ignition mode of keyless push start system is in "OFF".
Disconnect "L283" or "L285" connector.
Connect "STEERING WHEEL" (1) of special tool (A), (B) and (C) to "L283" or "L285" 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 B1052 or DTC B1056 indicated?
YES -
Go to Step 3.
NO -
Replace defective seat belt pretensioner. Removal and Installation

3. Floor harness circuit check

Disconnect "L04" or "L05" connector.
Release shorting bar in SDM connector inserting release tool included in special tool (A).
Check the following points.
- Resistance between "L04-6" and "L04-5" terminals (DTC B1052): infinity
- Resistance between "L05-14" and "L05-13" terminals (DTC B1056): 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 -
Replace floor 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.