Nissan Juke Service and Repair Manual : Fuel injector

Component Function Check

1.INSPECTION START

Turn ignition switch to START.

Is any cylinder ignited? YES >> GO TO 2.

NO >> Go to EC-778, "Diagnosis Procedure".

2.CHECK FUEL INJECTOR FUNCTION

1. Start engine.With CONSULT-III


1. Start engine.

2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-III.

3. Make sure that each circuit produces a momentary engine speed drop.

1. Let engine idle.Without CONSULT-III


1. Let engine idle.

2. Listen to each fuel injector operating sound.

Clicking noise should be heard.

Is the inspection result normal? YES >> INSPECTION END

NO >> Go to EC-778, "Diagnosis Procedure".

Diagnosis Procedure


Diagnosis Procedure

1.CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect fuel injector harness connector.

3. Turn ignition switch ON.

4. Check the voltage between fuel injector harness connector and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 3.

NO >> GO TO 2.

2.DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors E8, F1 • IPDM E/R connector E15 • 15 A fuse (No. 62)
• Harness for open or short between fuel injector and fuse

>> Repair open circuit or short to ground or short to power in harness or connectors.

3.CHECK FUEL INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between fuel injector harness connector and ECM harness connector.

4. Also check harness for short to ground and short to power.


4. Also check harness for short to ground and short to power.

Is the inspection result normal? YES >> GO TO 4.

NO >> Repair open circuit or short to ground or short to power in harness or connectors.

4.CHECK FUEL INJECTOR

Refer to EC-779, "Component Inspection".

Is the inspection result normal? YES >> GO TO 5.

NO >> Replace malfunctioning fuel injector.

5.CHECK INTERMITTENT INCIDENT

Refer to GI-42, "Intermittent Incident".

Is the inspection result normal? YES >> Replace IPDM E/R.

NO >> Repair or replace harness or connectors.

Component Inspection

1.CHECK FUEL INJECTOR

1. Turn ignition switch OFF.

2. Disconnect fuel injector harness connector.

3. Check resistance between fuel injector terminals as follows.

Is the inspection result normal?


Is the inspection result normal? YES >> INSPECTION END

NO >> Replace malfunctioning fuel injector.

    Electrical load signal
    Description The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred to ECM through the CAN communication line. Component Function Check 1.CHE ...

    Fuel pump
    Component Function Check 1.CHECK FUEL PUMP FUNCTION 1. Turn ignition switch ON. 2. Pinch fuel feed hose with two fingers. Fuel pressure pulsation should be felt on the fuel feed hose for 1 second ...

    Other materials:

    Key warning lamp
    Component Function Check 1.CHECK FUNCTION 1. Select “INTELLIGENT KEY” of “BCM” using CONSULT-III. 2. Select “INDICATOR” in “ACTIVE TEST” mode. 3. Check that the function operates normally according to the following conditions. Is the inspection result normal? YES >> Key warning lamp ...

    Locking with key
    The power door lock system allows you to lock or unlock all doors simultaneously. •  Turning the driver’s door key cylinder to the front of the vehicle1 will lock all doors and the lift gate. • Turning the driver’s door key cylinder once to the rear of the vehicle2 will unlock the drive ...

    On board diagnostic (OBD) system
    Diagnosis Description This system is an on board diagnostic system that records exhaust emission-related diagnostic information and detects a sensors/actuator-related malfunction. A malfunction is indicated by the malfunction indicator lamp (MIL) and stored in ECU memory as a DTC. The diagnos ...