Idle Speed: Adjustments

Required Manufacturer's Tools:

PREPARATION
Warm up the engine to normal operating temperature.
- Turn all electrical loads OFF.
- Headlight switch
- Fan switch
- Rear window defroster switch




- Connect the SSTs (NGS) to the data link connector-2 and select the PID/DATA MONITOR AND RECORD function.
- Select the "RPM" on the NGS display.
- Wait until the cooling fan stops.

IDLE SPEED
- Perform "Preparation".
- Connect the SST (System Selector) to the data link connector.
- Set switch A to position 1.
- Set the test switch to SELF TEST.
- With the cooling fan off, verify that the idle speed is within the specification.

Specification
(Neutral): 800 - 900(850 ± 50) rpm [MT]
(P range): 750 - 850 (800 ± 50) rpm [AT]




- If not within the specification, adjust the idle speed by turning the air adjusting screw.

CAUTION: The throttle adjusting screw is set at the factory and must not be adjusted. Any adjustment will negatively effect the engine performance.

- Disconnect the SST (System Selector).

IDLE UP SPEED
- Perform "Preparation".
- Verify that the cooling fan is stopped.
- Verify that the idle speed is within the specification.

Specification
(Neutral): 800 - 900 (850 ± 50) rpm [MT]
(P range): 750 - 850 (800 ± 50) rpm [AT]

- If not as specified, adjust the idle speed.
- Check the idle speed with the following load conditions.




NOTE: Excludes temporary idle speed drop just after the electrical loads are turned ON.

- If not as specified with all load condition, inspect the idle air control valve. If not as specified with each load condition, check related input switches, harnesses and connectors.