Diagnosis Procedure
- CHECK SEAT CUSHION HEATER POWER SUPPLY
Check voltage between seat cushion heater harness connector and ground.
(+) (-) Condition Voltage
(Approx.)Seat cushion heater Connector Terminal B612 45 Ground Ignition switch ON Battery voltage Other than above 0 V Is the inspection result normal?
YES
GO TO STEP 3 .
NO
GO TO STEP 2 .
- CHECK SEAT CUSHION HEATER CIRCUIT
- Turn ignition switch OFF.
- Disconnect seat cushion heater connector and heated seat relay connector.
- Check continuity between seat cushion heater harness connector and heated seat relay harness connector.
Seat cushion heater Heated seat relay Continuity Connector Terminal Connector Terminal B612 45 M46 3 Existed - Check continuity between seat cushion heater harness connector and ground.
Seat cushion heater Ground Continuity Connector Terminal B612 45 Not existed
Is the inspection result normal?
YES
Replace heated seat relay.
NO
Repair or replace harness.
- CHECK SEAT CUSHION HEATER CONTROL SIGNAL
Check voltage between seat cushion heater harness connector and ground.
(+) (-) Condition Voltage
(Approx.)Seat cushion heater Connector Terminal B612 48 Ground Heated seat system Operated 0 V Not operated Battery voltage Is the inspection result normal?
YES
Replace seat cushion trim. Refer to DISASSEMBLY AND ASSEMBLY
NO
GO TO STEP 4 .
- CHECK SEAT CUSHION HEATER CONTROL SIGNAL CIRCUIT
- Turn ignition switch OFF.
- Disconnect seat cushion heater connector and A/C auto amp. connector.
- Check continuity between seat cushion heater harness connector and A/C auto amp. harness connector.
Seat cushion heater A/C auto amp. Continuity Connector Terminal Connector Terminal B612 48 M90 55 Existed - Check continuity between seat cushion heater harness connector and ground.
Seat cushion heater Ground Continuity Connector Terminal B612 48 Not existed
Is the inspection result normal?
YES
Replace A/C auto amp. Refer to REMOVAL AND INSTALLATION .
NO
Repair or replace harness.