Frequent Stalling During Engine Warm-Up

SYMPTOM
Frequent Stalling During Warm-up

Check:

1. Electronic Air Control Valve (EACV) (14)
2. Ignition Output Signal (15)
3. Manifold Absolute Pressure (MAP) Sensor (3)(5)
4. PGM-FI Control (ECU) Unit (BU)

NOTE:
After each symptom, the system that could be the source of the symptom are listed and should be checked in the order they are listed, beginning with #1.

(BU) code used when the CHECK ENGINE warning light is on, and the self-diagnosis indicator LED is ON with no "blinks", the back-up system is in operation.