Code 85 (A/C Pressure Signal)
A/C PRESSURE SIGNALExplanation
This trouble code is stored when the A/C compressor is sensed as being switched "ON" (battery voltage on pin 85) but no A/C switch signal (0 V on pin 86) is received simultaneously.
Troubleshooting
- Check wires to the Digital Motor Electronic (DME) control unit Pin 85 and 86 for a short and break.
- Proceed with displayed scan tool diagnostic instructions where applicable.