Idle Control System (Warm Engine RPM Too Low)

Check According To Following Conditions:

1. Idle RPM is below spec (No Load)
a. Electronic Air Control Valve (EACV) (14)
b. Idle Adjusting Screw
c. Alternator FR Signal
2. Idle speed does not increase after initial start up
a. Electronic Air Control Valve (EACV) (14)
b. Starter Switch Signal
3. On models with automatic transmission, the idle speed drops in gear
a. A/T Shift Position Signal
b. Electronic Air Control Valve (EACV) (14)
c. Idle Adjusting Screw
4. Idle speed drops when air conditioner is on
a. Air Conditioning Signal
b. Electronic Air Control Valve (EACV) (14)
c. Idle Adjusting Screw

NOTE: All items should be checked in the order in which they appear. A (number) after the component indicates the fault code associated with that system. If BU appears on with PGM-FI unit, it indicates the vehicle is running in back-up mode.