Base Idle Speed Adjustment

NOTES:
- Base idle speed has been set by the manufacturer so there should be no need for readjustment.
- If idle speed is excessive or has dropped due to load of the air conditioning etc. adjust as follows.
- Prior to attempting to adjust idle speed confirm that the spark plugs, fuel injectors, idle air control motor the compression pressure etc. are all normal.

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 (white).

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

Idle Speed Adjustment:

3. If the scan tool is not used follow the steps below.
a. Insert the paper clip in the connector (blue color) of the 1 pin as shown in the illustration at left.

CAUTION: Insert the paper clip as in the illustration at left along the terminal from the opposite side of the locking pawl on the female connector.

b. Connect a primary-voltage-detection type of tachometer to the paper clip.
c. Using the special tool (diagnostic trouble code check haness)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.

Idle Speed Adjustment:

6. Start the engine and run at idle.
7. Check the basic idle speed.
- Standard value: 700 + 50 rpm

NOTES:
- The engine speed may be 20 to 100 rpm lower than indicated above for a new vehicle (drive approximately 500 km (300 miles) or less) but no adjustment is necessary.
- If the engine stalls or the rpm is low even though the vehicle has been driven approximately 500 km (300 miles) or more it is probable that deposits are adhered to the throttle valve so clean it.

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. If the scan tool was not used disconnect the jumper wire from the diagnostic test mode control terminal.
11. Disconnect the jumper wire from the ignition timing adjustment terminal and return the connector to its original condition.
12. 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.