Computers and Control Systems: Adjustments

1. Start the engine and warm it up to normal operating temperature (the cooling fan comes on).

2. Connect a tachometer.

Electronic Air Control Valve (EACV) 2p Connector:

3. Disconnect the 2P connector from the EACV.

4. Check idle speed in no-load condition in which the headlights, blower fan, rear defogger, cooling fan, and air conditioner are not operating.

Idle speed should be:
Manual ......... 650 ± 50 rpm
Automatic ..... 650 ± 50 rpm (in neutral or park)

Idle Speed Adjusting Screw:

Adjust the idle speed, if necessary, by turning the idle adjusting screw.

5. Turn the ignition switch OFF.

6. Reconnect the 2P connector on the EACV, then remove the CLOCK fuse in the under-hood relay box for 10 seconds to reset the ECU.

7. Restart and idle the engine with no-load conditions in which the headlights, blower fan, rear defogger, cooling fan, and air conditioner are not operating for one minute, then check the idle speed.

Idle speed should be:
Manual ......... 770 ± 50 rpm
Automatic ..... 770 ± 50 rpm (in neutral or park)

8. Idle the engine for one minute with heater fan switch at HI and air conditioner on, then check the idle speed.

Idle speed should be:
Manual ......... 770 ± 50 rpm
Automatic ...... 770 ± 50 rpm (in neutral or park).