Your Vehicle: 2009 Nissan-Datsun Altima V6-3.5L (VQ35DE)
 
Vehicle » Powertrain Management » Fuel Delivery and Air Induction » Fuel Injector » Testing and Inspection » Diagnosis Procedure  
 
 
  Diagnosis Procedure  
 

FUEL INJECTOR

Diagnosis Procedure

1.CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect fuel injector harness connector.
  3. Turn ignition switch ON.

  

  1. Check the voltage between fuel injector harness connector and ground.

  

Is the Inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following.

  • 10 A fuse (No. 35)
  • IPDM E/R harness connector E10
  • Harness for open or short between fuel injector and IPDM E/R >> Repair open circuit, short to ground or short to power in harness or connectors.

3.CHECK FUEL INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector.
  3. Check the continuity between fuel injector harness connector and ECM harness connector.

  

  1. Also check harness for short to ground and short to power. Is the Inspection result normal?

YES >> GO TO 4.
NO >> Repair open circuit, short to ground or short to power in harness or connectors.
4.CHECK FUEL INJECTOR
Refer to See: Component Inspection.
Is the Inspection result normal?
YES >> GO TO 5.
NO >> Replace malfunctioning fuel injector.
5.CHECK INTERMITTENT INCIDENT
Refer to See: Testing and Inspection\Initial Inspection and Diagnostic Overview\Service Information For Electrical Incident\Intermittent Incident.
Is the Inspection result normal?
YES >> Replace IPDM E/R.
NO >> Inspection END