Computers and Control Systems: Adjustments

1. Start the engine and let it warm up to normal operating temperature (the cooling fan comes on).
2. Connect a tachometer.

Fig. 39 Removing 2P Connector From EACV:

3. Disconnect the 2P connector from the EACV.
4. Check the idle speed in the no-load condition in which the headlights, blower fan, rear defogger, cooling fan, and air conditioner are off.

Idle Speed Should Be:

Manual ........625 +/- 50 rpm
Automatic .....625 +/- 50 rpm (in "N" or "P")

Fig. 40 Idle Adjusting Screw:

Adjust the idle speed, if necessary, by turning the idle speed adjusting screw.
5. Turn the ignition switch OFF.
6. Reconnect the 2P connector on the EACV, then remove the HAZARD (#5) fuse in the main fuse box for 10 seconds to reset the ECU.
7. Restart the engine, and idle the engine with the no-load conditions in which the headlights, blower fan, rear defogger, cooling fan, and air conditioner are not operating for one minute, then chedk the idle speed.

Idle Speed Should Be:

Manual ........750 +/- 50 rpm
Automatic .....750 +/- 50 rpm (in "N" or "P")

8. Idle the engine for one minute with the headlights on (HI) and rear defogger ON and check the idle speed.
If applicable, with Automatic transmission models, idle the engine for one minute in gear ("D") and check the idle speed.

Idle Speed Should Be:
800 +/- 50 rpm

9. Idle the engine for one minute with the heater fan switch on high (right end) and air conditioner on, then check the idle speed.

Idle Speed Should Be:
800 +/- 50 rpm