042-288-B0-001, Rev. A2
89
Fig. 8-1, Gas Hazard Detector Interface Connector
Fig. 8-2, Low Fuel Pressure Interface Connector
Pin Description Function
1 Gas Hazard Sensor Switch Active OPEN signal denotes gas hazard (Logic HIGH)
2 Gas Hazard Power/Alarm Common Return signal path for sensor
3 Gas Hazard Logic Power +12Vdc Fused Logic Power for Logic PCB & sensor
8.0 Interconnection
8.1 Gas Hazard Alarm Interface Connector
The Gas Hazard Detector Interface Connector is connected between the wire harness and
detector unit as shown. The interface control is a 3-pin (1x3 row) Universal Mini Mate-’N’-Lok
style male connector.
8.2 Low Fuel Pressure Interface Connector
The interface control is a 2 pin Mini Mate-'N’-Lok connector (near gas solenoid):
• Pin 1 = +12Vdc activates (opens) solenoid ONLY when APU is running. Controlled by
APU engine ON command
• Pin 2 = Low fuel pressure switch (negative)
Pin Description Function
1 Low Fuel Pressure Sensor Contact Closed (LOW signal) denotes Low
Fuel Pressure (LP Versions only)
2 Low Fuel Pressure Common Return signal path for sensor
