Idle Up System Check

Idle Up System Check
1. Warm up engine to normal operating temperature.
2. Turn A/C switch OFF, if equipped.
3. Turn steering wheel fully and check idle speed. Engine idle speed drops a little momentarily when steering wheel is turned fully but returns to its specified level immediately, if power steering pressure switch connector is connected. Check the same with that connector disconnected. In the state of disconnected connector, engine idle speed will be momentarily dropped widely and not return to the specified idle speed. If defective is found, check P/S pressure switch.