Diagnostic Procedure

Turn ignition switch to START.

Is any cylinder ignited? 

Yes or No 

1. Yes: GO TO 2.
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: Displaying ACTIVE TEST Mode With Consult-II

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

WITHOUT CONSULT-II 

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

   Clicking noise should be heard. 

Fig 2: Identifying Injector Operating Sound

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

OK or NG 

1. OK: INSPECTION END 
2. NG: GO TO 3.

1. Turn ignition switch OFF.
2. Disconnect injector harness connector.
3. Turn ignition switch ON.
   Fig 3: Disconnecting Injector Harness Connector

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

   Voltage: Battery voltage 

Fig 4: Checking Voltage Between Injector Terminal 1 & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

1. OK: GO TO  5.
2. NG: GO TO 4.

Check the following.

• Harness connectors M19, E108
• Harness connectors E10, F48
• Harness connectors F12, F101
• Fuse block (J/B) connector M1
• 10A fuse
• Harness for open or short between injector and fuse
  1. Repair harness or connectors.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between injector terminal 2 and ECM terminals 22, 23, 41, 42.

   Refer to WIRING DIAGRAM .

   Continuity should exist. 

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

OK or NG 

1. OK: GO TO  7.
2. NG: GO TO 6.

Check the following.

• Harness connectors F12, F101
• Harness for open or short between injector and ECM
  1. Repair open circuit or short to ground or short to power in harness or connectors.

Refer to "COMPONENT INSPECTION ".

OK or NG 

1. OK: GO TO 8.
2. NG: Replace injector.

Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

1. INSPECTION END