Diagnostic Procedure

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.

Refer to COMPONENT INSPECTION .

OK or NG

1. OK: Go to 3.
2. NG: Replace mass air flow sensor (with intake air temperature sensor).

Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

Refer to WIRING DIAGRAM .

1. Inspection end