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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 213 (Engine Controls - Self-Diagnostics - 3.0L) >> Diagnostic Tests >> DTC P0507: Idle Speed High - IAC Responding >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Did you perform the Diagnostic System Check - Engine Controls? If yes, go to next step. If no, go to DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS .
  2. Is DTC P1551, P2100, P2101, P2105, P2107, P2119 or P2176 also set? If yes, see DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no, go to next step.
  3. Start engine. Using scan tool, command the engine speed up to 1400 RPM, down to 600 RPM, up to 1400 RPM, then exit using the scan tool. Does the engine speed correspond within 100 RPM with each command? If yes, problem is intermittent. Refer to INTERMITTENTS in TROUBLE SHOOTING - NO CODES - 2.2L & 3.0L VUE article. If no, go to next step.
  4. Inspect for vacuum leaks, throttle blade not closing properly or a faulty crankcase ventilation system. Repair as necessary. After repairs, go to next step.
  5. Clear the DTCs with a scan tool. Turn ignition off. Start engine. Operate vehicle within the Conditions for Running the DTC. See CONDITIONS FOR RUNNING DTC . You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records. Did the DTC fail this ignition? If yes, go to step  2. If no, go to next step.
  6. Observe the Capture Info with a scan tool. Are there any DTCs that have not diagnosed? If yes, see DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no, system is okay.
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