History Code 84 - Passenger Reserve Diode Shorted: Description

DERM checks dual pole arming sensor for a shorted passenger reserve diode once each ignition cycle during TURN-ON tests, before either 36VLR output is active. When DERM detects a shorted passenger reserve diode, it advances an internal counter. If DERM detects a shorted passenger reserve diode for 8 consecutive ignition cycles, counter stops advancing and sets a History Code 84. DERM resets counter to zero when clear conditions are met. If neither failure or clear conditions are met, counter remains unchanged.