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: Generic Scan Tool - Power Balance

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: Inspecting Injector

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 injector 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 injector terminal 1 and ground with CONSULT-II or tester.

   Voltage: Battery voltage 

Fig 4: Checking Voltage Between Injector Terminal 1 And Ground

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

OK or NG 

OK: GO TO  5.

NG: GO TO 4.

Check the following.

• Harness connectors M61, F41
• Harness connectors F1, F101
• Fuse block (J/B) connector M1
• 10A fuse
• Harness for open or short between 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 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 in harness or connectors.

OK or NG 

OK: GO TO  7.

NG: GO TO 6.

Check the following.

• Harness connectors F101, F1
• Harness for open or short between injector and ECM

  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 8.

NG: Replace injector.

Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

INSPECTION END