RPM Too High When Warm

SYMPTOM: RPM Too High When Warm

CHECK
1. Electronic Control Unit (**)
2. Other Idle Controls
3. Electronic Air Control Valve (14)

Numbers in parentheses are the blink codes displayed on back of the ECU.
(**) LED on the ECU is not on, or stays on without blinking. Notes on Reading Diagnostic List
For ECU trouble code component testing procedures see Computers and Control Systems.