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Test TC-25D - Idle Air Control Motor Circuits

NOTE: Perform TEST TC-25A  before proceeding.
NOTE: For connector terminal identification, refer to CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS article in this section.
  1. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Inspect connectors and terminals for damage. Repair connectors and terminals as necessary and perform TEST VER-2A. If connectors and terminals are okay, go to next step.
  2. Using an external ohmmeter, check resistance of IAC motor connector, driver No. 3 circuit (Yellow/Black wire) between IAC motor connector and PCM Black connector. If resistance is less than 5 ohms, replace PCM and perform TEST VER-2A . If resistance is 5 ohms or more, repair open driver No. 3 circuit and perform TEST VER-2A.
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