X67 - Check ACPSW Circuit Continuity to PCM

- Key "OFF".

- AC Pressure Switch (ACPSW) disconnected.

- Disconnect Powertrain Control Module (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 42 at the breakout box and the ACPSW circuit at the ACPSW vehicle harness connector.

- Is resistance less than 5.0 ohms?

Yes -- Replace PCM. Remove breakout box. Reconnect all components. Re-evaluate symptom.

No -- Service open circuit. Remove breakout box. Reconnect all components. Re-evaluate symptom.