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Idle Up Control Valve: Adjustments

INSPECT AND ADJUST A/C IDLE-UP VALVE OPERATION
- Initial conditions:
- Engine at normal operating temperature.
- Idle speed check correctly.
- Transmission in neutral position.
- A/C switch ON.




- Using a jumper wire (or SST 09843-18020), connect terminals TE1 and E1 of the DLC1, check that idle-up occurs for approx. 3 seconds.
- Valve operation is faulty if during the idle-up period the engine speed drops by 100 rpm or more, rough idle occurs, or the engine stalls.

- Observe the idle speed for approx. 3 to 15 seconds.
- During this time the A/C idle-up valve should go off, the IAC valve half-open and idle-up should occur.
- Check that the idle speed, after approx. 15 seconds does not vary greatly from the idle speed observed in the previous step.
- The A/C idle-up valve should now be in ON position.




- If the idle speed is increased by more 1OO rpm, using a 4 mm hexagon wrench, turn the A/C idle-up valve adjustment screw to correct the A/C idle-up valve.
- Remove the jumper from the DLC1.
- Turn A/C switch OFF.