3. Check Injector Power Supply Circuit

1. Turn ignition switch OFF.
2. Disconnect harness connectors F21, F201 (bank 1) and harness connectors F41, F221 (bank 2).
   Fig 1: Identifying Harness Connectors F21, F201, F41 & F221

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Turn ignition switch ON.
4. Check voltage between the following; harness connector F21 terminal 5 and ground, harness connector F41 terminal 5 and ground with CONSULT-II or tester.
   Fig 2: Checking Voltage Between Harness Connector F21 Terminal 5 & Ground, & Harness Connector F41 Terminal 5 & Ground

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

   Voltage: Battery voltage 

OK or NG 

1. OK: GO TO 5. CHECK INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT .
2. NG: GO TO 4.