B2458

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. SELF-DIAGNOSIS WITH PRE-CRASH SEAT BELT CONTROL UNIT

1.Turn ignition switch ON.
2.Check "Self-diagnostic result" with CONSULT.
Is DTC detected?
YES- Refer to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK POWER SUPPLY AND GROUND CIRCUIT

Check pre-crash seat belt control unit power supply and ground circuit. Refer to "Diagnosis Procedure" B2456.
Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace malfunctioning parts.

2. CHECK LOCAL COMMUNICATION LINE CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect pre-crash seat belt control unit (driver side and passenger side) harness connector.
3.Check continuity between pre-crash seat belt control unit (driver side) harness connector and pre-crash seat belt control unit (passenger side).





4.Check continuity between pre-crash seat belt control unit (driver side) harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace harness or connector.

3. REPLACE PRE-CRASH SEAT BELT CONTROL UNIT (PASSENGER SIDE)

1.Replace pre-crash seat belt control unit (passenger side). Refer to "SEAT BELT RETRACTOR : Removal and Installation" Removal and Installation.
2.Check "Self-diagnostic result" with CONSULT.
Is DTC detected?
YES- GO TO 4.
NO- INSPECTION END

4. REPLACE PRE-CRASH SEAT BELT CONTROL UNIT (DRIVER SIDE)

1.Replace pre-crash seat belt control unit (driver side). Refer to "SEAT BELT RETRACTOR : Removal and Installation" Removal and Installation.
2.Check "Self-diagnostic result" with CONSULT.
Is DTC detected?
YES- GO TO 5.
NO- INSPECTION END

5. CHECK INTERMITTENT INCIDENT

Refer to "Intermittent Incident" Intermittent Incident.
- INSPECTION END