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Test TC-25C - Idle Air Control Motor Circuits

NOTE: Perform TEST TC-25A - IDLE AIR CONTROL MOTOR CIRCUITS  before proceeding. For connector terminal identification, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS article.
  1. Ensure ignition is off. Disconnect connectors from Powertrain Control Module (PCM). The PCM is located between driver's side front fender and power distribution center, near battery.
  2. Check connectors for pushed out, miswired or damaged terminals. If terminals are not pushed out, miswired or damaged, go to next step. If terminals are pushed out, miswired or damaged, repair connectors as necessary. Perform TEST VER-2A - ROAD TEST VERIFICATION .
  3. Using ohmmeter, check resistance between terminal No. 3 (Yellow/Black wire) on connector for idle air control motor and PCM connector terminal No. 49 (Yellow/Black wire). If resistance is less than 5 ohms, replace PCM. Perform TEST VER-2A - ROAD TEST VERIFICATION . If resistance is 5 ohms or more, repair open circuit in Yellow/Black wire between PCM and idle air control motor. Perform TEST VER-2A - ROAD TEST VERIFICATION .
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