Diagnosis Procedure
- CHECK FRONT SEATBACK HEATER POWER SUPPLY
- Turn ignition switch OFF.
- Disconnect front seatback heater connector.
- Turn ignition switch ON.
- Check voltage between front seatback heater harness connector and ground.
(+)
(-)
Voltage (V)
(Approx.)
Front seatback heater
Connector
Terminal
Driver side
B535
77
Ground
Battery voltage
Passenger side
B575
Is the inspection result normal?
YES
INSPECTION END
NO
GO TO 2.
- CHECK FRONT SEATBACK HEATER POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect front heated seat relay.
- Check continuity between front seatback heater harness connector and front heated seat relay terminal connector.
Front seatback heater
Front heated seat relay
Continuity
Connector
Terminal
Connector
Terminal
Driver side
B535
77
M70
3
Existed
Passenger side
B575
- Check continuity between front seatback heater harness connector and ground.
Front seatback heater
Ground
Continuity
Connector
Terminal
Driver side
B535
77
Not existed
Passenger side
B575
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace harness.
- CHECK INTERMITTENT INCIDENT
Check intermittent incident.
Refer to Intermittent Incident .
INSPECTION END