Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
To diagnose the C15AB code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.
When the Variable Gear Ratio Steering (VGRS) system is normal, the steering actuator conducts current from the steering control ECU to the steering actuator solenoid to release the lock mechanism, enabling motor operation. The steering actuator does not operate under any of the following conditions:
- The engine switch is off.
- The motor in the actuator is locked by the lock mechanism to prevent rotation (fail-safe function).
- The system is being protected from overheating (fail-safe function).
If the steering control ECU detects a malfunction in the steering actuator lock mechanism or a motor rotation angle error, it will store this Diagnostic Trouble Code (DTC).
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