Diagnosis Procedure
WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
Regarding Wiring Diagram information, refer to WIRING DIAGRAM .
- CHECK FRONT BLOWER MOTOR RELAY CONTROL SIGNAL VOLTAGE
- Remove front blower motor relay.
- Check voltage between front blower motor relay connector J-4 and ground.
Front blower motor relay Ground Condition Voltage
(Approx.)Connector Terminal J-4 2 - Ignition: OFF 0V Ignition: ON Battery voltage
Is the inspection result normal?
YES
GO TO STEP 3.
NO
GO TO STEP 2.
- CHECK FRONT BLOWER MOTOR RELAY CONTROL SIGNAL CIRCUIT
- Turn ignition switch OFF.
- Disconnect BCM connector M19.
- Check continuity between BCM connector M19 and front blower motor relay connector J-4.
BCM Front blower motor relay Continuity Connector Terminal Connector Terminal M19 66 J-4 2 Yes - Check continuity between BCM connector M19 and ground.
BCM Ground Continuity Connector Terminal M19 66 - No
Is the inspection result normal?
YES
Replace BCM. Refer to REMOVAL AND INSTALLATION .
NO
Repair or replace harness or connectors.
- CHECK FRONT BLOWER MOTOR RELAY GROUND CIRCUIT
- Turn ignition switch OFF.
- Check continuity between front blower motor relay connector J-4 and ground.
Front blower motor relay Ground Continuity Connector Terminal J-4 1 - Yes
Is the inspection result normal?
YES
Replace front blower motor relay.
NO
Repair or replace harness or connectors.