Diagnosis Procedure
WARNING: This page is about a different car, the 2008 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK BLOWER RELAY POWER SUPPLY
- Turn ignition switch OFF.
- Disconnect blower relay.
- Check voltage between blower relay harness connector and ground.TERMINALS VOLTAGE REFERENCE
(+) (-) 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.
- CHECK BLOWER RELAY POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect BCM connector.
- Check continuity between blower relay harness connector and BCM harness connector.TERMINALS CONTINUITY REFERENCE
Blower relay BCM Continuity Terminal Connector Terminal 1 M122 102 Existed - Check continuity between blower relay harness connector and ground.TERMINALS CONTINUITY REFERENCE
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 or connector.
- CHECK BLOWER RELAY GROUND CIRCUIT
- Turn ignition switch OFF.
- Check continuity between blower relay harness connector and ground.TERMINALS CONTINUITY REFERENCE
Blower relay Ground Continuity Terminal 2 Existed
Is the inspection result normal?
YES: GO TO 4.
NO: Repair blower relay ground circuit.
- CHECK BLOWER RELAY
Refer to COMPONENT INSPECTION .
Is the inspection result normal?
YES: GO TO 5.
NO: Replace blower relay.
- CHECK INTERMITTENT INCIDENT
Refer to INTERMITTENT INCIDENT .
INSPECTION END