P1535

DTC P1535
A/C Compressor request plausibility fault Drive cycle A:Signal implausible.

Possible causes by suggested order of priority:
- Connectors C793, ECM C637 (B).
- Open circuit - C637/38 (PW) to C793/12 (PB).
- Short circuit C637/38 (PW) to vehicle earth.

Connectors C793, ECM C637 (B).
- Check for connector not correctly latched, backed out pins, damaged pins, corroded pins

Open circuit - C637/38 (PW) to C793/12 (PB).
- Check resistance > 1M Ohm

Short circuit C637/38 (PW) to vehicle earth.
- Check resistance < 5.0 Ohm