Fault-Tracing Information

Condition(s)
- no diagnostic trouble codes (DTCs) stored.
- engine at normal operating temperature.
- the fault is permanent.

Possible source(s)
- throttle cable sticks.
- throttle body (TB) incorrectly adjusted.
- air leakage.
- defective idle air control (IAC) valve.
- start fault-tracing. Proceed to: Checking Throttle Cable and Throttle Position.