B2075

PRE-COLLISION SYSTEM: B2074: Driver Side Seat Belt Buckle Switch Circuit Malfunction

DTC B2074 - Driver Side Seat Belt Buckle Switch Circuit Malfunction

DTC B2075 - Passenger Side Seat Belt Buckle Switch Circuit Malfunction

DESCRIPTION

This DTC is output when a malfunction is detected in the driver's side buckle switch circuit or passenger's side buckle switch circuit.






WIRING DIAGRAM





INSPECTION PROCEDURE
NOTE:
When the seat belt control ECU is replaced with a new one, INITIALIZATION must be performed. Pre-Collision System

PROCEDURE

1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM)
(a) Delete the DTC Pre-Collision System.
(b) Recheck for DTCs.
OK:
DTC U0151 is not output.
NG -- GO TO CAN COMMUNICATION SYSTEM
OK -- Continue to next step.
2. CHECK DTC OUTPUT (SUPPLEMENTAL RESTRAINT SYSTEM)
(a) Check DTC for supplemental restraint system DTC Check / Clear.
OK:
DTC B1655 is not output.
NG -- GO TO SUPPLEMENTAL RESTRAINT SYSTEM
OK -- Continue to next step.
3. CHECK DTC OUTPUT (OCCUPANT CLASSIFICATION SYSTEM)
(a) Check DTC for occupant classification system Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC B1771 is not output.
NG -- GO TO OCCUPANT CLASSIFICATION SYSTEM
OK -- Continue to next step.
4. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM)
(a) Delete the DTC Pre-Collision System.
(b) Recheck for DTCs.
OK:
DTC B2074 or B2075 is not output.
NG -- REPLACE SEAT BELT CONTROL ECU
OK -- USE SIMULATION METHOD TO CHECK