1.CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE) CIRCUIT

1. Turn ignition switch ON.
2. Check that voltage between seat belt buckle switch (passenger side) and ground.

(+) | (–) | Condition | Voltage (V) (Approx.)
Seat belt buckle switch (passenger side)
Connector | Terminal
B212 | 3 | Ground | When passenger side seat belt is fastened | 2.0 or more
When passenger side seat belt is not fastened | 0

Is the inspection result normal?
YES>>GO TO 3.
NO>>GO TO 2.
2.CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE) CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect air bag diagnosis sensor unit connector and seat belt buckle switch (passenger side) connector.
3. Check continuity between air bag diagnosis sensor unit harness connector and seat belt buckle switch (passenger side) harness connector.

   Air bag diagnosis sensor unit | Seat belt buckle switch (passenger side) | Continuity
   Connector | Terminal | Connector | Terminal
   B237 | 25 | B212 | 3 | Existed

4. Check continuity between air bag diagnosis sensor unit harness connector and ground.

   Air bag diagnosis sensor unit | Ground | Continuity
   Connector | Terminal
   B237 | 25 | Not existed

Is the inspection result normal?
YES>>INSPECTION END
NO>>Repair or replace harness between air bag diagnosis sensor unit and seat belt buckle switch (passenger side).
3.CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT
Check continuity between seat belt buckle switch (passenger side) harness connector and ground.

Seat belt buckle switch (passenger side) | Ground | Continuity
Connector | Terminal
B212 | 2 | Existed

Is the inspection result normal?
YES>>GO TO 4.
NO>>Repair or replace harness between seat belt buckle switch and ground.
4.CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE)
Check seat belt buckle switch (passenger side). Refer to Component Inspection (Belt Buckle Switch).
Is the inspection result normal?
YES>>INSPECTION END
NO>>Replace seat belt buckle switch (passenger side).