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

Without CONSULT-II 

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

   Clicking noise should be heard  .

OK or NG

1. OK: Inspection end 
2. NG: go to 3.

1. Turn ignition switch OFF.
2. Disconnect injector harness connector. See Figure .
3. Turn ignition switch ON.
4. Check voltage between injector terminal 1 and ground with CONSULT-II or tester.
   1. Voltage: Battery voltage 
   Fig 1: Testing Injector Terminal 1 Circuit (W/DVOM)

   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 M82, F102
• Harness connectors F21, F201
• Harness connectors F41, F221
• Fuse block (J/B) connector M1
• 15A fuse
• Harness for open or short between injector and fuse
  1. 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 injector terminal 2 and ECM terminals 21, 22, 23, 40, 41, 42, 44, 63.

   Refer to wiring diagram. See Figure .

   1. 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 F21, F201
• Harness connectors F41, F221
• 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