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Test TC-25D: Idle Air Control Motor Circuits

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS article.
  1. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Inspect PCM connector for damaged or pushed out terminals. Repair as necessary. Perform TEST VER-2A . If PCM connector terminals are okay, go to next step.
    NOTE: For next step, see IAC DRIVER CIRCUIT IDENTIFICATION  table for IAC motor connector wire color identification and PCM CONNECTOR WIRE IDENTIFICATION  table.
  2. Using an ohmmeter, check resistance of IAC motor driver No. 3 circuit between IAC motor connector and PCM connector terminal No. 48. If resistance is 5 ohms or more, repair open in IAC motor driver No. 3 circuit. Perform TEST VER-2A . If resistance is less than 5 ohms, replace PCM. Perform TEST VER-2A .
IAC DRIVER CIRCUIT IDENTIFICATION

Application Wire Color
Driver No. 3 Circuit
Avenger, Sebring Coupe & Talon Gray
Breeze, Cirrus, Sebring Conv. & Stratus (2.0L & 2.4L) Brown/White
Cirrus, Sebring Conv. & Stratus (2.5L) (1)Brown/White
Neon Brown/White
(1) On Sebring Convertible, wire color is Brown/Gray.
PCM CONNECTOR WIRE IDENTIFICATION

Application Wire Color
PCM Terminal No. 48 (IAC Driver No. 3 Circuit)
Avenger, Sebring Coupe & Talon Gray
Breeze, Cirrus, Sebring Conv. & Stratus (2.0L & 2.4L) Brown/White
Cirrus, Sebring Conv. & Stratus (2.5L) (1)Brown/White
Neon Brown/White
(1) On Sebring Convertible, wire color is Brown/Gray.
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