Idle Speed: Testing and Inspection

ENGINE TUNE-UP PREPARATION
1. Warm up the engine to normal operating temperature.
2. Shift transmission into Neutral (MT) or P position (AT).
3. Turn off all electrical loads.
^ Headlight
^ Blower
^ Rear window defroster
4. Verify that the battery is fully charged.
5. Wait until the electrical fan stops.





6. Connect the NGS tester to the data link connector-2 and select the "PID/DATA MONITOR AND RECORD" function and press TRIGGER.
7. Select "RPM" and press TRIGGER.
8. Press "SET UP" and turn the test mode on (press ON).
9. Press CANCEL.
10. Select "START" to begin.


IDLE-UP SPEED INSPECTION
1. Perform "Engine Tune-up Preparation" above.
2. Verify that the idle speed is within the specification.
Specification 750 - 850 (800 ± 50) rpm
3. If not as specified, adjust the idle speed.





4. Verify that the idle-up speed is within the specification.
5. If not as specified with all loads conditions, inspect the idle air control valve. If not as specified with some load conditions, inspect related input switches, harnesses and connectors.