Skip to content

TRCM_a066 — Left Power Issue

Full alert identifier: TRCM_a066_leftPowerIssue

Message shown in the car

Safety restraint system issue Service is required

Alert description

Restraint Control Module (RCM) bus voltage from Vehicle Controller- Left (VCLEFT) is measured below specification. This alert indicates that the electrical power supply to the TRCM is outside the required operating range for proper system operation.

Potential impact

The Safety Restraint System may not perform as designed due to insufficient power supply voltage for proper TRCM operation.

Set condition

Bus voltage supplying the TRCM goes below the range defined by specification requirements.

Clear condition

Clears when RCM input bus voltage from VCLEFT returns to within the range defined by specification and remains stable.

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
Bus Voltage TRCM_a066_busVoltage V

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of TRCM_a066.

Browse all TRCM alert codes