Test TC-138B - Target Idle Not Reached
NOTE:
For connector terminal ID, see CONNECTOR IDENTIFICATION DIRECTORY. For component location see wiring diagram in the WIRING DIAGRAMS
article.
- Turn ignition off. Disconnect PCV valve hose from intake manifold. Cap vacuum port at intake manifold. Disconnect idle purge hose from throttle body. Install Orifice Tool (6714) on idle purge hose port at throttle body. Go to next step.
- Start engine. Allow engine to reach operating temperature. Using scan tool, actuate MIN AIRFLOW. If engine speed is 550 RPM or more, replace throttle body and perform TEST VER-2A. If engine speed is less than 550 RPM, go to next step.WARNING: Clean throttle body in well ventilated area and wear rubber gloves.
- Remove throttle body. While holding throttle open, spray entire throttle body bore with carburetor/throttle body cleaner. Using soft scuff pad, clean throttle body bore and throttle plate. Using compressed air, dry throttle body. Install throttle body and go to next step.
- Start engine. Allow engine idle to stabilize. Using scan tool, actuate MIN AIRFLOW. If engine speed is less than 550 RPM, replace throttle body and perform TEST VER-2A. If engine speed is 550 RPM or more, test is complete. Perform TEST VER-2A.
NOTE:
A break in test sequence occurs at this point. Sequence skips from TEST TC-138B to TEST TC-140A. No tests have been omitted.