B1CE413 - B1CE413 Right Outside Mirror Fold Motor Drive Circuit Open Circuit Fault

Fault Depth Definition

DTC B1CE413 is defined as "Right Outer Rearview Mirror Folding Motor Drive Circuit Open Circuit Fault". In vehicle electronic architecture, this fault code signifies that the physical connection integrity between the Left Domain Controller and the Right Outer Rearview Mirror Folding Motor in the central control network has been compromised. When the system detects a high impedance state (i.e., open circuit) in the drive circuit, the control unit determines that it cannot establish a complete electrical loop to drive the actuator. This definition involves key feedback logic of vehicle electronic architecture: Left Domain Controller as the signal source is responsible for outputting control commands to the target actuator; while Right Outer Rearview Mirror Folding Motor undertakes actual mechanical position adjustment and physical response. Drive circuit open usually means interruption of current transmission path, causing control commands unable to be converted into mechanical actions, belonging to typical state triggered by overload protection mechanism on open circuit.

Common Fault Symptoms

Based on "Right Outer Rearview Mirror Folding Function Failure" recorded in original data, combined with driving experience and technical performance, this fault typically manifests as follows during vehicle operation:

• Actuator No Response: When driver issues folding command via door handle or control switch, right outer rearview mirror stays at position without moving.
• System Error Indication: Vehicle onboard diagnostic system (OBD) reads clear error code B1CE413, possibly accompanied by body control related warning lights on instrument cluster.
• Dynamic Function Abnormality: Whether vehicle is stationary or driving, as long as start switch is in ON position, attempting to operate folding function fails to achieve expected mechanical feedback.

Core Fault Cause Analysis

According to fault diagnosis logic, potential factors leading to DTC B1CE413 are mainly categorized into following three hardware and controller dimensions:

• Wiring/Connector Physical Connection Failure: Wiring harness between Left Domain Controller and Right Outer Rearview Mirror Folding Motor may have broken wires, internal copper wire breakage, or connector terminal oxidation, pull-out causing poor physical contact, thus forming open circuit.
• Actuator Component Failure: Internal coil burnout or rotor binding in Right Outer Rearview Mirror Folding Motor, causing impedance abnormally increased to open circuit state, unable to receive normal drive voltage.
• Controller Logic or Output Failure: Inside Left Domain Controller logic calculation unit responsible for drive circuit or power stage output module damaged, unable to correctly send or maintain drive signal voltage.

Technical Monitoring & Trigger Logic

Control unit fault determination logic is based on real-time closed-loop monitoring of circuit status. Under following specific working conditions, system enters active monitoring mode:

• Pre-set Trigger Conditions: Must satisfy "Start switch in ON position" and "Operate Right Outer Rearview Mirror Folding" this compound action command taking effect for controller to execute subsequent detection logic.
• Monitoring Target Objects: Control system focuses on monitoring impedance change and voltage division situation in drive loop to identify existence of open circuit characteristics.
• Judgment Threshold Logic: When controller sends drive signal to circuit, if circuit ends show expected open circuit impedance (i.e., $R_{circuit} \to \infty$), and current does not reach minimum maintenance threshold, system will mark fault code B1CE413 according to "drive circuit open" definition in input data. This monitoring process runs entirely within system self-check scope, aiming to ensure actuator electrical safety.