Test NTC-8A - Checking Idle Air Control Motor
WARNING: This page is about a different car, the 1994 Plymouth Acclaim and 1994 Dodge Spirit. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
For circuit and connector terminal identification, see CONNECTOR IDENTIFICATION DIRECTORY TABLE
. For wiring diagrams, see WIRING DIAGRAMS
.
- Using DRB, set engine speed to 1100 RPM. If engine speed set at 1050-1150 RPM, idle speed motor is operating properly, test is complete. If engine speed did not set at 1050-1150 RPM, return engine to normal idle speed. Disconnect idle air control motor connector.
- Put DRB in voltmeter mode. Using DRB, check voltage on idle air control motor connector Brown/White wire while momentarily opening and closing throttle. If voltage is less than one volt, go to TEST NTC-8B. If voltage is more than one volt, go to next step.
- Using DRB, check voltage on idle air control motor connector Yellow/Black wire while momentarily opening and closing throttle. If voltage is less than one volt, go to TEST NTC-8B. If voltage is more than one volt, go to next step.
- Using DRB, check voltage on idle air control motor connector Gray/Red wire while momentarily opening and closing throttle. If voltage is less than one volt, go to TEST NTC-8B. If voltage is more than one volt, go to next step.
- Using DRB, check voltage on idle air control motor connector Violet/Black wire while momentarily opening and closing throttle. If voltage is less than one volt, go to TEST NTC-8B. If voltage is more than one volt, go to next step.
- Check engine for vacuum leaks. Repair as required. Perform TEST VER-2 . If no vacuum leaks are observed, replace idle air control motor. Perform TEST VER-2.