AIS9 - Check Idle RPM

NOTE: Engine idle RPM is controlled by the PCM and cannot be adjusted. This test will verify the idle rpm is within the specification. If the engine is allowed to idle for an extended period of time, or if the engine temperature is hot enough to require cooling fan operation, it may be necessary to turn the engine off and repeat this test procedure.

^ Transmission in Park (wheels blocked and parking brake engaged).

^ A/C, heater and all accessories are off.

^ Key On, Engine Running.

^ Engine at normal operating temperature and cooling fan off.

WARNING: Do not unplug cooling fan. It may cause engine overheating.

^ Check idle rpm as specified for the particular vehicle and engine application.

^ Is the base idle RPM within range?

YES -- Go to AIS1O. AIS10 - Check Idle Control Response

NO -- Go to AIS11. AIS11 - Check IAC Solenoid For Proper Function