3. Check Injector Power Supply Circuit

1. Turn ignition switch OFF.
2. Disconnect injector harness connector.
   Fig 1: Locating Fuel Injectors

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Turn ignition switch ON.
4. Check voltage between injector terminal 1 and ground with CONSULT-II or tester.
   1. Voltage: Battery voltage 

OK or NG 

OK >> GO TO 5. CHECK INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT .

NG >> GO TO 4. DETECT MALFUNCTIONING PART .

Fig 2: Checking Voltage At Injector Harness Connector

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