Power Supply and Ground Circuit
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 (DRIVER SIDE) 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 inspection result normal?
YES- GO TO 7.
NO- GO TO 3.
3. CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT (DRIVER SIDE) POWER SUPPLY CIRCUIT
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 inspection result normal?
YES- GO TO 4.
NO- Repair or replace harness or connector.
4. CHECK CLIMATE CONTROLLED SEAT RELAY POWER SUPPLY CIRCUIT
1.Turn ignition switch ON.
2.Check voltage between climate controlled seat relay harness connector and ground.
Is the inspection result normal?
YES- GO TO 5.
NO- Repair or replace harness or connector.
5. CHECK CLIMATE CONTROLLED SEAT RELAY GROUND CIRCUIT
1.Turn ignition switch OFF.
2.Check continuity between climate controlled seat relay harness connector and ground.
Is the inspection result normal?
YES- GO TO 6.
NO- Repair or replace harness.
6. CHECK CLIMATE CONTROLLED SEAT RELAY
Check climate controlled seat relay.
Refer to "CLIMATE CONTROLLED SEAT CONTROL UNIT : Component Inspection" .
Is the inspection result normal?
YES- GO TO 8.
NO- Replace climate controlled seat relay.
7. CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT (DRIVER SIDE) GROUND CIRCUIT
1.Turn ignition switch OFF.
2.Check continuity between climate control unit (driver side) harness connector and ground.
Is the inspection result normal?
YES- GO TO 8.
NO- Repair or replace harness or connector.
8. CHECK INTERMITTENT INCIDENT
Refer to "Intermittent Incident" 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 (PASSENGER SIDE) 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 inspection result normal?
YES- GO TO 7.
NO- GO TO 3.
3. CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT (PASSENGER SIDE) POWER SUPPLY CIR-
CUIT
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 (passenger side) harness connector and ground.
Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace harness or connector.
4. CHECK CLIMATE CONTROLLED SEAT RELAY POWER SUPPLY CIRCUIT
1.Turn ignition switch ON.
2.Check voltage between climate controlled seat relay harness connector and ground.
Is the inspection result normal?
YES- GO TO 5.
NO- Repair or replace harness or connector.
5. CHECK CLIMATE CONTROLLED SEAT RELAY GROUND CIRCUIT
1.Turn ignition switch OFF.
2.Check continuity between climate controlled seat relay harness connector and ground.
Is the inspection result normal?
YES- GO TO 6.
NO- Repair or replace harness.
6. CHECK CLIMATE CONTROLLED SEAT RELAY
Check climate controlled seat relay.
Refer to "CLIMATE CONTROLLED SEAT CONTROL UNIT : Component Inspection" .
Is the inspection result normal?
YES- GO TO 8.
NO- Replace climate controlled seat relay.
7. CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT (PASSENGER SIDE) GROUND CIRCUIT
1.Turn ignition switch OFF.
2.Check continuity between harness connector and ground.
Is the inspection result normal?
YES- GO TO 8.
NO- Repair harness or connector.
8. CHECK INTERMITTENT INCIDENT
Refer to "Intermittent Incident" Intermittent Incident.
- INSPECTION END
CLIMATE CONTROLLED SEAT CONTROL UNIT : Component Inspection
1. CHECK CLIMATE CONTROLLED SEAT RELAY
1.Turn ignition switch OFF.
2.Remove climate controlled seat relay.
3.Check the continuity between climate controlled seat relay terminals under the following conditions.
Is the inspection result normal?
YES- INSPECTION END.
NO- Replace climate controlled seat relay.