HU14 - Check IAC Circuit For Short to Ground

- Key Off.

- IAC solenoid disconnected.

- Disconnect PCM. Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.

- Install breakout box, leave PCM disconnected.

- Measure resistance between Test Pin 83 (IAC) and Test Pins 51 or 103 (PWR GND) at the breakout box and chassis ground.

- Is each resistance greater than 10,000 ohms?

YES -- REPLACE damaged PCM. REMOVE breakout box. RECONNECT all components. Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes

NO -- SERVICE short circuit. RECONNECT all components. Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes