Diagnosis Procedure

POWER SUPPLY AND GROUND CIRCUIT


CLIMATE CONTROLLED SEAT CONTROL UNIT : Diagnosis Procedure


Driver side
1.CHECK FUSE
Check that the following fuses are not fusing.





Is the fuse fusing?
YES - Replace the blown fuse after repairing the affected circuit if a fuse is blown.
NO - GO TO 2.
2.CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat control unit (driver side) connector.
3. Turn ignition switch ON.
4. Check voltage between climate controlled seat control unit (driver side) harness connector and ground.





Is the measurement value normal?
YES - GO TO 3.
NO - GO TO 4.
3.CHECK GROUND CIRCUIT
Check continuity between climate control unit (driver side) harness connector and ground.





Does continuity exist?
YES - INSPECTION END
NO - Repair or replace harness or connector.
4.CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT POWER SUPPLY CIRCUIT 1
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat relay.
3. Check continuity between climate controlled seat control unit (driver side) harness connector and climate controlled seat relay harness connector.





4. Check continuity between climate controlled seat control unit (driver side) harness connector and ground.





Is the measurement value normal?
YES - GO TO 5.
NO - Repair or replace harness or connector.
5.CHECK CLIMATE CONTROLLED SEAT RELAY POWER SUPPLY CIRCUIT 2
1. Turn ignition switch ON.
2. Check voltage between climate controlled seat relay harness connector and ground.





Is the measurement value normal?
YES - GO TO 6.
NO - Repair or replace harness or connector.
6.CHECK CLIMATE CONTROLLED SEAT RELAY
Check climate controlled seat relay. Refer to Component Inspection
Is the inspection result normal?
YES - GO TO 7.
NO - Replace climate controlled seat relay.
7.CHECK CLIMATE CONTROLLED SEAT RELAY GROUND CIRCUIT
Check continuity between climate controlled seat relay harness connector and ground.





Does continuity exist?
YES - GO TO 8.
NO - Repair or replace harness.
8.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
- INSPECTION END

Passenger side
1.CHECK FUSE
Check that the following fuses are not fusing.





Is the fuse fusing?
YES - Replace the blown fuse after repairing the affected circuit if a fuse is blown.
NO - GO TO 2.
2.CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat control unit (passenger side) connector.
3. Turn ignition switch ON.
4. Check voltage between climate controlled seat control unit (passenger side) harness connector and ground.





Is the measurement value normal?
YES - GO TO 3.
NO - GO TO 4.
3.CHECK GROUND CIRCUIT
Check continuity between harness connector and ground.





Does continuity exist?
YES - INSPECTION END
NO - Repair harness or connector.
4.CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT POWER SUPPLY CIRCUIT 1
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat relay.
3. Check continuity between climate controlled seat control unit (passenger side) harness connector and climate controlled seat relay harness connector.





4. Check continuity between climate controlled seat control unit (driver side) harness connector and ground.





Is the measurement value normal?
YES - GO TO 5.
NO - Repair or replace harness or connector.
5.CHECK CLIMATE CONTROLLED SEAT RELAY POWER SUPPLY CIRCUIT 2
1. Turn ignition switch ON.
2. Check voltage between climate controlled seat relay harness connector and ground.





Is the measurement value normal?
YES - GO TO 6.
NO - Repair or replace harness or connector.
6.CHECK CLIMATE CONTROLLED SEAT RELAY
Check climate controlled seat relay. Refer to Component Inspection
Is the inspection result normal?
YES - GO TO 7.
NO - Replace climate controlled seat relay.
7.CHECK CLIMATE CONTROLLED SEAT RELAY GROUND CIRCUIT
Check continuity between climate controlled seat relay harness connector and ground.





Does continuity exist?
YES - GO TO 8.
NO - Repair or replace harness.
8.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
- INSPECTION END