Diagnostic Procedure

Turn ignition switch to START.

Is any cylinder ignited? 

Yes or No 

Yes >> GO TO 2.

No >> GO TO  3.

With CONSULT-II 

1. Start engine.
2. Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT-II.
3. Make sure that each circuit produces a momentary engine speed drop.
   Fig 1: CONSULT-II Display - ACTIVE TEST

   Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II 

1. Start engine.
2. Listen to each fuel injector operating sound.

   Clicking noise should be heard. 

   Fig 2: Checking Fuel Injector Operating Sound

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK >> INSPECTION END 

NG >> GO TO 3.

1. Turn ignition switch OFF.
2. Disconnect fuel injector (1) harness connector.
3. Turn ignition switch ON.
   Fig 3: Identifying Fuel Injector Harness Connector

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check voltage between fuel injector terminal 1 and ground with CONSULT-II or tester.

   Voltage: Battery voltage 

OK or NG 

OK >> GO TO  5.

NG >> GO TO 4.

Fig 4: Checking Voltage Between Fuel Injector Terminal 1 And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

Check the following.

• Harness connectors E8, F8
• IPDM E/R harness connector E45
• 10A fuse
• 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.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between fuel injector terminal 2 and ECM terminals 25, 29, 30, 31.

   Refer to WIRING DIAGRAM .

   Continuity should exist. 

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

OK or NG 

OK >> GO TO 6.

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

Refer to "COMPONENT INSPECTION ".

OK or NG 

OK >> GO TO 7.

NG >> Replace fuel injector.

Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

>> INSPECTION END