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 ACCESSORY RELAY-1 AND ACCESSORY RELAY-2 CONTROL SIGNAL VOLTAGE
- Remove accessory relay-1 and disconnect accessory relay-2.
- Check voltage between accessory relay-1 connector J-3 and ground.
Accessory relay-1 Ground Condition Voltage
(Approx.)Connector Terminal J-3 2 - Ignition: OFF 0V Ignition: ACC Battery voltage - Check voltage between accessory relay-2 connector E22 and ground.
Accessory relay-2 Ground Condition Voltage
(Approx.)Connector Terminal E22 1 - Ignition: OFF 0V Ignition: ACC Battery voltage
Is the inspection result normal?
YES
GO TO STEP 3.
NO
GO TO STEP 2.
- CHECK ACCESSORY RELAY-1 AND ACCESSORY RELAY-2 CONTROL SIGNAL CIRCUIT
- Turn ignition switch OFF.
- Disconnect BCM connector M80.
- Check continuity between accessory relay-1 connector J-3 and BCM connector M80.
Accessory relay-1 BCM Continuity Connector Terminal Connector Terminal J-3 2 M80 113 Yes - Check continuity between accessory relay-2 connector E22 and BCM connector M80.
Accessory relay-2 BCM Continuity Connector Terminal Connector Terminal E22 1 M80 113 Yes - Check continuity between BCM connector M80 and ground.
BCM Ground Continuity Connector Terminal M80 113 - No
Is the inspection result normal?
YES
Replace BCM. Refer to REMOVAL AND INSTALLATION .
NO
Repair or replace harness or connectors.
- CHECK ACCESSORY RELAY-1 AND ACCESSORY RELAY-2 GROUND CIRCUIT
- Turn ignition switch OFF.
- Check continuity between accessory relay-1 connector J-3 and ground.
Accessory relay-1 Ground Continuity Connector Terminal J-3 1 - Yes - Check continuity between accessory relay-2 connector E22 and ground.
Accessory relay-2 Ground Continuity Connector Terminal E22 2 - Yes
Is the inspection result normal?
YES
Replace accessory relay.
NO
Repair or replace harness or connectors.