Test NTC-9A - Checking Idle Air Control Motor
NOTE:
Perform TEST NTC-1A or NTC-8A before proceeding.
- Using scan tool, set engine speed to 1100 RPM. If engine speed is 1050-1150 RPM, return engine to normal idle speed. Idle Air Control (IAC) motor is okay. Test is complete. If engine speed is not 1050-1150 RPM, go to next step.
- Using scan tool, return engine to normal idle speed. Inspect engine for any vacuum leaks. If vacuum leaks are present, repair vacuum leaks as necessary. Perform TEST VER-2A. If vacuum leaks are not present, go to next step.
- Disconnect IAC motor connector. Inspect IAC motor connector for damaged or pushed out terminals. If connector is okay, replace IAC motor. Perform TEST VER-2A. If connector is not okay, repair connector as necessary. Perform TEST VER-2A.