Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Infiniti FX45. However, it is still accessible from the selected car via links, so may be relevant.

Check Ground Connections
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body. See Figure .
  Refer to GROUND INSPECTION .
OK or NG
1. OK: go to 2 .
2. NG: Repair or replace ground connections.
Check Intake Air Temperature Sensor
Refer to COMPONENT INSPECTION .

OK or NG
1. OK: go to 3 .
2. NG: Replace mass air flow sensor (with intake air temperature sensor).
  For mass air flow sensor & intake air temperature sensor location, see Figure and Figure .
Check Intermittent Incident
Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .
1. Inspection end