Seat Temperature Relay: Testing and Inspection

HEATED SEAT RELAY





Description
Power is supplied to the heated seat using ignition power supply control.




Component Function Check
1.CHECK HEATED SEAT RELAY FUNCTION
Check that heated seat warms to preset temperature when operating heated seat switch to the optimal position.
Is the inspection result normal?
YES - Heated seat relay function is OK.
NO - SEE Diagnosis Procedure




Diagnosis Procedure
1.CHECK HEATED SEAT RELAY POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect heated seat relay.
3. Turn ignition switch ON.
4. Check voltage between heated seat relay terminal connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - GO TO 2.
2.CHECK HEATED SEAT RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect fuse block (J/B) connector.
3. Check continuity between heated seat relay terminal connector and fuse block (J/B) harness connector.





4. Check continuity between heated seat relay terminal connector and ground.





Is the inspection result normal?
YES - GO TO 5.
NO - Repair or replace harness.
3.CHECK HEATED SEAT RELAY GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between heated seat relay terminal connector and ground.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace harness.
4.CHECK HEATED SEAT RELAY
Check heated seat relay. SEE Component Inspection.
Is the inspection result normal?
YES - Heated seat relay is OK.
NO - Replace heated seat relay.
5.CHECK INTERMITTENT INCIDENT
Check intermittent incident. Intermittent Incident.
- INSPECTION END




Component Inspection
1.CHECK HEATED SEAT RELAY
1. Turn ignition switch OFF.
2. Disconnect heated seat relay.
3. Check continuity between heated seat relay terminals.










Is the inspection result normal?
YES - INSPECTION END
NO - Replace heated seat relay.