Seat Belt Buckle Switch Signal Inspection

WARNING CHIME


Seat Belt Buckle Switch Signal Inspection

1.CHECK BCM INPUT SIGNAL
1. Select "BCM" on CONSULT-III.
2. With "Data Monitor" of "BUZZER", confirm "BUCKLE SW" when the seat belt is fastened/unfastened.

"BUCKLE SW"
When seat belt is fastened: Off
When seat belt is unfastened: On

OK or NG
OK - Seat belt buckle switch signal is OK. Return to Initial Inspection and Diagnostic Overview.
NG - GO TO 2.
2.CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL





1. Turn ignition switch ON.
2. Check voltage between unified meter and A/C amp. harness connector and ground.





OK or NG
OK - Replace unified meter and A/C amp.
NG - GO TO 3.
3.CHECK SEAT BELT BUCKLE SWITCH CIRCUIT





1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector and seat belt buckle switch (driver side) connector.
3. Check continuity between unified meter and A/C amp. harness connector (A) and seat belt buckle switch (driver side) harness connector (B).





4. Check harness continuity between unified meter and A/C amp. harness connector (A) and ground.





OK or NG
OK - GO TO 4.
NG - Repair harness or connector.
4.CHECK SEAT BELT BUCKLE SWITCH (DRIVER SIDE)
Check seat belt buckle switch (driver side). Electrical Component Inspection.
OK or NG
OK - Check seat belt buckle switch (driver side) ground circuit.
NG - Replace seat belt buckle switch (driver side).