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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 37 (Engine Controls - Tests W/Codes - 5.2L Gasoline) >> Self-Diagnostic Tests >> Test NS-7D - Inspecting Idle Air Control Motor Operation

Test NS-7D - Inspecting Idle Air Control Motor Operation

WARNING: This page is about a different car, the 1995 Dodge Ram Wagon, 1995 Dodge Ram Van, 1995 Dodge Pickup, and 1995 Dodge Dakota. 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  . For wiring diagram, see WIRING DIAGRAMS  section at the end of this article.
  1. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Inspect connectors for damaged, pushed-out or miswired terminals. Repair as required. Perform TEST VER-1. If PCM terminals are okay, go to next step.
  2. Using an external ohmmeter, check resistance of driver No. 4 circuit (Violet/Black wire) between IAC motor connector and PCM connector terminal No. 59. If resistance is less than 5 ohms, replace PCM. Perform TEST VER-1. If resistance is more than 5 ohms, repair open Violet/Black or Gray/Red wire. Perform TEST VER-1.
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