Code 31 - Driver Loop Energy Reserve Feed Open: Description

Code 31 sets when failure conditions are met during Diagnostic Energy Reserve Module (DERM) CONTINUOUS MONITORING tests. These tests are performed for one second after initial TURN-ON tests are completed and every 100 milliseconds while IGNITION 1 voltage is present at DERM. CONTINUOUS MONITORING tests check both deployment loops for continuity from DERM 36VLR outputs through dual pole arming sensor, inflator modules, SIR coil and discriminating sensors to ground. Code 31 indicates an open in DRIVER 36VLR circuit, short to battery on DRIVER SOURCE SENSE circuit or an open driver reserve diode in dual pole arming sensor.