Diagnosis Procedure

HEAT SENSOR


DRIVER SIDE : Diagnosis Procedure

1.CHECK HEAT SENSOR INPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between heated seat control unit harness connector and ground.





Is the inspection result normal?
YES - heat sensor is OK.
NO - GO TO 2.
2.CHECK HEAT SENSOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect heated seat control unit connector and seat cushion heater connector.
3. Check continuity between heated seat control unit harness connector and seat cushion heater harness connector.





4. Check continuity between heated seat control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace harness.
3.CHECK HEAT SENSOR POWER SUPPLY
1. Turn ignition switch ON.
2. Turn heated seat switch ON.
3. Check voltage between seat cushion heater harness connector and ground.





Is the inspection result normal?
YES - GO TO 5.
NO - GO TO 4.
4.CHECK HEAT SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect heated seat switch connector.
3. Check continuity between heated seat control unit harness connector and seat cushion heater harness connector.





4. Check continuity between heated seat control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 6.
NO - Repair or replace harness.
5.CHECK HEAT SENSOR
Check heat sensor. Component Inspection.
Is the inspection result normal?
YES - GO TO 6.
NO - Replace seat cushion heater. Removal and Installation.
6.CHECK INTERMITTENT INCIDENT
Check intermittent incident. Intermittent Incident
- INSPECTION END