Test TC-25B: Idle Air Control Motor Circuits
NOTE:
For connector terminal identification, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS article.
- 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.
- Using an ohmmeter, check resistance of IAC motor driver No. 1 circuit between IAC motor connector and PCM connector terminal No. 57. If resistance is 5 ohms or more, repair open in IAC motor driver No. 1 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. 1 Circuit | ||
| Avenger, Sebring Coupe & Talon | Gray/Dark Blue | |
| Breeze, Cirrus, Sebring Conv. & Stratus (2.0L & 2.4L) | Gray/Red | |
| Cirrus, Sebring Conv. & Stratus (2.5L) | Gray/Red | |
| Neon | Gray/Red | |
PCM CONNECTOR WIRE IDENTIFICATION
| Application | Wire Color | |
|---|---|---|
| PCM Terminal No. 57 (IAC Driver No. 1 Circuit) | ||
| Avenger, Sebring Coupe & Talon | Gray/Dark Blue | |
| Breeze, Cirrus, Sebring Conv. & Stratus (2.0L & 2.4L) | Gray/Red | |
| Cirrus, Sebring Conv. & Stratus (2.5L) | Gray/Red | |
| Neon | Gray/Red | |