Code 31, Open 36VLR To Deployment Loop: Description

Voltage at SENSE LOW input is 41-61 percent of 36VLR output when 36VLR output of DERM is functional. Should circuit open between 36VLR output and dual sensor, IGNITION 1 voltage will supply deployment loop. Voltage at SENSE LOW input will decrease due to decrease in supply voltage, and Code 31 will set after 700 milliseconds (if Code 42 is not set). Code 31 indicates an open in wiring between 36VLR output of DERM and dual sensor, an open diode in dual sensor or a problem with SENSE HIGH or SENSE LOW circuits.