Fixed Speed Adjusting Screw (SAS) Adjustment

NOTES:

1. The standard idle speed has been adjusted, by the engine speed adjusting screw, by the manufacturer, and there should usually be no need for readjustment.
2. The adjustment, if made, should be made after first confirming that the spark plugs, the injectors, the idle air control servo, the compression pressure, etc., are all normal.

PROCEDURE
1. The vehicle should be prepared as follows before the inspection and adjustment.

^ Engine coolant temperature: 80 - 95°C (176-203°F)
^ Lights, cooling fan and accessories: OFF
^ Transaxle: Neutral (P range for A/T)

2. Connect the scan tool to the data link connector (16-pin)

NOTE: When the scan tool is connected, the diagnostic test mode control terminal should be grounded.





3. When not using the scan tool, proceed as follows:

a. Insert a paper clip into the 1-pin connector (blue).
b. Connect a primary-voltage-detection type of tachometer to the paper clip.





c. Use the special tool (diagnostic trouble code check harness) to ground the diagnostic test mode control terminal (terminal 1) of the data link connector (16 pin).





4. Remove the waterproof female connector from the ignition timing adjustment connector.
5. Use a jumper wire to ground the ignition timing adjustment terminal.
6. Start the engine and run at idle.
7. Check the idle speed.

Standard value: 750 +/- 50 RPM

NOTES:

1. The engine speed may be 20 to 100 RPM. lower than indicated above for a new vehicle [driven approximately 500 km (300 mile) or less], but no adjustment is necessary.
2. If the engine stalls or the RPM is low even though the vehicle has been driven approximately 500 km (300 mile) or more, it is probable that deposits are adhered to the throttle valve, so clean it. Refer to Throttle Body Cleaning Procedure.





8. If not within the standard value range, turn the engine speed adjusting screw to make the necessary adjustment.

NOTE: If the idling speed is higher than the standard value range even when the engine speed adjusting screw is fully closed, check whether or not there is any indication that the fixed SAS has been moved. If there is an indication that it has been moved, adjust the fixed SAS. If there are no indications that it has been moved, it is possible that there is leakage as a result of deterioration of the fast idle air valve (FIAV), and, if so, the throttle body should be replaced.

9. Switch OFF the ignition switch.
10. Disconnect the jumper wire from the ignition timing adjustment terminal and return the connector to its original condition.
11. Start the engine again and let it run at idle speed for about 10 minutes; check to be sure that the idling condition is normal.