Diagnosis Procedure
- CHECK CLIMATE CONTROLLED SEAT CUSHION BLOWER MOTOR POWER SUPPLY
- Turn ignition switch ON.
- Check voltage between climate controlled seat cushion blower motor harness connector and ground.
(+)
(-)
Condition
Voltage (V)
(Approx.)
Climate controlled seat cushion blower motor
Connector
Terminal
Driver side
B531
64
Ground
Climate controlled seat switch
HEAT mode
12
COOL mode
Other than the above
0
Passenger side
B561
Climate controlled seat switch
HEAT mode
12
COOL mode
Other than the above
0
Is the inspection result normal?
YES
GO TO 3.
NO
GO TO 2.
- CHECK CLIMATE CONTROLLED SEAT CUSHION BLOWER MOTOR POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect climate controlled seat cushion blower motor connector and climate controlled seat control unit connector.
- Check continuity between climate controlled seat cushion blower motor harness connector and climate controlled seat control unit harness connector.
Climate controlled seat cushion blower motor
Climate controlled seat control unit
Continuity
Connector
Terminal
Connector
Terminal
Driver side
B531
64
B660
64
Existed
Passenger side
B561
B662
- Check continuity between climate controlled seat cushion blower motor harness connector and ground.
Climate controlled seat cushion blower motor
Ground
Continuity
Connector
Terminal
Driver side
B531
64
Not existed
Passenger side
B561
Is the inspection result normal?
YES
Replace climate controlled seat control unit.
NO
Repair or replace harness.
- CHECK CLIMATE CONTROLLED SEAT CUSHION BLOWER MOTOR SPEED CONTROL SIGNAL
Check voltage between climate controlled seat cushion blower motor harness connector and ground.
(+)
(-)
Condition
Voltage (V)
(Approx.)
Climate controlled seat cushion blower motor
Connector
Terminal
Driver side
B531
66
Ground
Climate controlled seat switch
HEAT
6.5 - 8
COOL
HI
10
MID
8
LO
6
Other than the above
0
Passenger side
B561
Climate controlled seat switch
HEAT
6.5 - 8
COOL
HI
10
MID
8
LO
6
Other than the above
0
Is the inspection result normal?
YES
GO TO 5.
NO
GO TO 4.
- CHECK CLIMATE CONTROLLED SEAT CUSHION BLOWER MOTOR SPEED CONTROL SIGNAL CIRCUIT
- Turn ignition switch OFF.
- Disconnect climate controlled seat cushion blower motor connector and climate controlled seat control unit connector.
- Check continuity between climate controlled seat cushion blower motor harness connector and climate controlled seat control unit harness connector.
Climate controlled seat cushion blower motor
Climate controlled seat control unit
Continuity
Connector
Terminal
Connector
Terminal
Driver side
B531
66
B660
66
Existed
Passenger side
B561
B662
- Check continuity between climate controlled seat cushion blower motor harness connector and ground.
Climate controlled seat cushion blower motor
Ground
Continuity
Connector
Terminal
Driver side
B531
66
Not existed
Passenger side
B561
Is the inspection result normal?
YES
Replace climate controlled seat control unit.
NO
Repair or replace harness.
- CHECK CLIMATE CONTROLLED SEAT CUSHION BLOWER MOTOR GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect climate controlled seat cushion blower motor and climate controlled seat control unit connector.
- Check continuity between climate controlled seat cushion blower motor harness connector and climate controlled seat control unit harness connector.
Climate controlled seat cushion blower motor
Climate controlled seat control unit
Continuity
Connector
Terminal
Connector
Terminal
Driver side
B531
65
B660
65
Existed
Passenger side
B561
B662
- Check continuity between climate controlled seat cushion blower motor harness connector and ground.
Climate controlled seat cushion blower motor
Ground
Continuity
Connector
Terminal
Driver side
B531
65
Not existed
Passenger side
B561
Is the inspection result normal?
YES
Replace climate controlled seat cushion blower motor.
NO
Repair or replace harness.