Pathfinder 2WD V6-4.0L (VQ40DE) (2009)
1 - Ground : Battery voltage
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK HEATER PUMP GROUND
1. Turn ignition switch OFF.
2. Check continuity between heater pump harness connector E141 terminal 2 and ground.
2 - Ground : Continuity should exist.
Is the inspection result normal?
YES >> Replace heater pump. Refer to See: Heater Core/Service and Repair/Heater Pump.
NO >> Repair harness or connector.
3.CHECK HEATER PUMP RELAY
1. Turn ignition switch OFF.
2. Check heater pump relay. Refer to See: Component Inspection.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace heater pump relay.
4.CHECK RELAY POWER SUPPLY
1. Turn ignition switch ON.
2. Check voltage between heater pump relay harness connector E144 terminals 2, 5 and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair harness or connector.
5.CHECK HEATER PUMP MOTOR POWER CIRCUIT
1. Turn ignition switch OFF.