TRCM_a081 — Unexpected Power Loss

Full alert identifier: TRCM_a081_unexpectedPowerLoss

Alert description

Restraint Control Module (RCM) is in autarky state due to power loss. This alert indicates that the RCM has detected a loss of primary power and has switched to backup power operation to maintain critical safety functions.

Potential impact

The Safety Restraint System may not perform as designed due to limited functionality while operating on backup power. System operation time may be reduced.

Set condition

RCM enters autarky state when primary power supply is lost and the system switches to backup power operation.

Clear condition

RCM is no longer experiencing power loss and exits autarky state when primary power is restored.

Signals to check

Open this alert in Service Mode Plus and review the Payload tab. Use the field names below to identify the values shown by your vehicle.

Signal	Unit
Event Accel Pedal Pos `TRCM_a081_eventAccelPedalPos` 255 SNA	%
Event Vehicle Speed `TRCM_a081_eventVehicleSpeed`	kph

Signal	Unit
Event Arm Status `TRCM_a081_eventArmStatus` 0 UNARMED 1 ARMED	—
Event Driver Brake Apply `TRCM_a081_eventDriverBrakeApply` 0 NotInit orOff 1 Not Applied 2 Driver applying brakes 3 Faulty SNA	—
Event Front Left Seatbelt `TRCM_a081_eventFrontLeftSeatbelt` 0 UNLATCHED 1 LATCHED	—
Event Front Right Seatbelt `TRCM_a081_eventFrontRightSeatbelt` 0 UNLATCHED 1 LATCHED	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of TRCM_a081.