Engine Systems (MAS)

Engine Systems (MAS) Location:

The engine systems (MAS) control module combines the previous fuel pump and A/C compressor relays along with other functions into one single component.

Engine Systems (MAS) Control Unit Input-Output Chart:

The chart above lists inputs and outputs for the MAS control module.
The MAS control module is also equipped with on-board diagnostics. When the engine is running, any recognized faults will be stored in the control module's memory. The stored faults can be extracted using an impulse counter at the on-board diagnostic connector. Furthermore, stored faults will not be erased if battery power is removed or the control module is disconnected.

Engine Systems (MAS) Control Unit Terminal Designations:

CONTROL MODULE TERMINAL DESIGNATIONS