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.