1.CHECK BLOWER RELAY POWER SUPPLY
Turn ignition switch OFF.
Disconnect blower relay.
Check voltage between blower relay harness connector and ground.
(+)
(–)
Condition
Voltage (V)
(Approx.)
Blower relay
Terminal
1
Ground
Ignition switch
OFF or ACC
0
ON
Battery voltage
Is the inspection result normal?
YES
>>
GO TO 3
.
NO
>>
GO TO 2
.
2.CHECK BLOWER RELAY POWER SUPPLY CIRCUIT
Disconnect BCM connector.
Check continuity between blower relay harness connector and BCM harness connector.
Blower relay
BCM
Continuity
Terminal
Connector
Terminal
1
M122
102
Existed
Check continuity between blower relay harness connector and ground.
Blower relay
Ground
Continuity
Terminal
1
Not existed
Is the inspection result normal?
YES
>>
Replace BCM. Refer to
Removal and Installation
.
NO
>>
Repair or replace harness.
3.CHECK BLOWER RELAY GROUND CIRCUIT
Check continuity between blower relay harness connector and ground.
Blower relay
Ground
Continuity
Terminal
2
Existed
Is the inspection result normal?
YES
>>
GO TO 4
.
NO
>>
Repair blower relay ground circuit.
4.CHECK BLOWER RELAY
Refer to
Component Inspection
.
Is the inspection result normal?
YES
>>
GO TO 5
.
NO
>>
Replace blower relay.
5.CHECK INTERMITTENT INCIDENT
Refer to
Intermittent Incident
.
>>
INSPECTION END