CCV System
NOTE:
For component location, see COMPONENT LOCATIONS
. For connector identification, see CONNECTOR IDENTIFICATION
. For circuit identification and wiring diagram, see WIRING DIAGRAMS
article. After each repair procedure has been completed, reconnect all components.
The following procedure checks Throttle Body calibrations for correct idle conditions. To perform the following procedure, a Fixed Orifice Adapter (6714) measuring .185" (4.70 mm) must be used. See Fig 1 . Procedure should only be used to diagnose the Throttle Body for conditions that may cause idle problems. Before performing this test, ensure Idle Air Control (IAC) Motor is functioning properly. If IAC Motor is not functioning properly, perform appropriate Idle Air Control (IAC) Motor circuit test. See SELF-DIAGNOSTIC SYSTEM in SELF-DIAGNOSTICS - DAKOTA, SELF-DIAGNOSTIC SYSTEM in SELF-DIAGNOSTICS - DURANGO - JTEC or SELF-DIAGNOSTIC SYSTEM in SELF-DIAGNOSTICS - DURANGO - NGC article.
- Turn the ignition off. Remove air duct and air cleaner resonator from top of Throttle Body. Disconnect tube from fixed orifice fitting at left front side of valve cover. Insert either end of fixed orifice adapter into disconnected tube. Go to next step.
- Connect DRB-III(R) to Data Link Connector (DLC). Turn all accessories off. Using DRB-III(R), perform MINIMUM AIR FLOW TEST. DRB-III(R) will count down to stabilize idle RPM and display MINIMUM AIRFLOW RPM. If RPM displayed is not 500-900 RPM, replace Throttle Body. Perform POWERTRAIN VERIFICATION TEST VER-5 (JTEC) or POWERTRAIN VERIFICATION TEST VER-5 (NGC) . If RPM displayed is 500-900 RPM, minimum airflow is okay. Test is complete.