Nissan Juke Service and Repair Manual : High pressure fuel pump

Component Function Check

1.CHECK HIGH PRESSURE FUEL PUMP FUNCTION

1. Start engine. With CONSULT-III


1. Start engine.

2. Check “FUEL PRES SEN V” in “DATA MONITOR” mode of “ENGINE” using CONSULT-III.

Without CONSULT-III


1. Start engine.Without CONSULT-III


1. Start engine.

2. Check the voltage between ECM harness connector terminals as per the following conditions.

Is the inspection result normal?


Is the inspection result normal? YES >> INSPECTION END

NO >> Proceed to EC-410, "Diagnosis Procedure".

Diagnosis Procedure

1.CHECK HIGH PRESSURE FUEL PUMP POWER SUPPLY

1. Turn ignition switch ON.

2. Check the voltage between ECM harness connector and ground.

Is inspection result normal?


Is inspection result normal?

YES >> GO TO 8.

NO >> GO TO 2.

2.CHECK HIGH PRESSURE FUEL PUMP POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Disconnect fuel injector relay harness connector.

4. Check the continuity between ECM harness connector and high pressure fuel pump relay harness connector.

5. Also check harness for short to ground.


5. Also check harness for short to ground.

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

NO >> Repair or replace error-detected parts

3.CHECK HIGH PRESSURE FUEL PUMP RELAY POWER SUPPLY (CONTACT SIDE)

Check the voltage between high pressure fuel pump relay harness connector and ground.

Is the inspection result normal?


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

NO >> Perform the trouble diagnosis for power supply circuit.

4.CHECK HIGH PRESSURE FUEL PUMP RELAY POWER SUPPLY (EXCITATION COIL SIDE)

1. Reconnect all harness connectors disconnected.

2. Turn ignition switch ON.

3. Check the voltage between high pressure fuel pump relay harness connector and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 6.

NO >> GO TO 5 5.CHECK HIGH PRESSURE FUEL PUMP RELAY POWER SUPPLY CIRCUIT (EXCITATION COIL SIDE)

1. Turn ignition switch OFF.

2. Disconnect high pressure fuel pump relay harness connector.

3. Disconnect IPDM E/R harness connector.

4. check the continuity between ipdm e/r harness connector and high pressure fuel pump harness connector.

5. Also check harness for short to ground.


5. Also check harness for short to ground.

Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit.

NO >> Repair or replace error-detected parts.

6.CHECK HIGH PRESSURE FUEL PUMP RELAY GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect high pressure fuel pump relay harness connector.

3. Check the continuity between high pressure fuel pump relay harness connector and ground.

4. Also check harness for short to power.


4. Also check harness for short to power.

Is the inspection result normal? YES >> GO TO 7.

NO >> Repair or replace error-detected parts.

7.CHECK HIGH PRESSURE FUEL PUMP RELAY

Check the high pressure fuel pump relay. Refer to EC-413, "Component Inspection (High Pressure Fuel Pump Relay)".

Is inspection result normal? YES >> GO TO 8.

NO >> Replace high pressure fuel pump relay. Refer to PG-7, "Standardized Relay".

8.CHECK HIGH PRESSURE FUEL PUMP CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector and high pressure fuel pump harness connector.

3. Check the continuity between ECM harness connector and high pressure fuel pump harness connector.

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


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

Is inspection result normal? YES >> GO TO 9.

NO >> Repair or replace error-detected parts.

9.CHECK HIGH PRESSURE FUEL PUMP

Check the high pressure fuel pump. Refer to EC-413, "Component Inspection".

Is inspection result normal? YES >> GO TO 10.

NO >> Replace high pressure fuel pump. Refer to EM-43, "Exploded View".

10.CHECK HIGH PRESSURE FUEL PUMP INSTALLATION CONDITION

1. Turn ignition switch OFF.

2. Check that the high pressure fuel pump is installed with no backlash and looseness.

Is the inspection result normal? YES >> GO TO 11.

NO >> Repair or replace error-detected parts.

11.CHECK CAMSHAFT

1. Remove camshaft. Refer to EM-78, "Exploded View".

2. Check camshaft. Refer to EM-82, "Inspection".

Is inspection result normal? YES >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".

NO >> Replace camshaft. Refer to EM-78, "Exploded View".

Component Inspection

1.CHECK HIGH PRESSURE FUEL PUMP SOLENOID

1. Turn ignition switch OFF.

2. Disconnect high pressure fuel pump harness connector.

3. Check the resistance between high pressure fuel pump connector terminals as per the following.

Is the inspection result normal?


Is the inspection result normal? YES >> INSPECTION END

NO >> Replace high pressure fuel pump. Refer to EM-43, "Exploded View".

Component Inspection (High Pressure Fuel Pump Relay)

1.CHECK HIGH PRESSURE FUEL PUMP RELAY

1. Turn ignition switch OFF.

2. Remove high pressure fuel pump relay. Refer to PG-7, "Standardized Relay".

3. Check the continuity between high pressure fuel pump relay terminals as per the following conditions.


Is the inspection result normal?


Is the inspection result normal? YES >> INSPECTION END

NO >> Replace high pressure fuel pump relay. Refer to PG-7, "Standardized Relay".

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