Lock Mechanism Release Incomplete
Table of contents
C15AA TOYOTA Possible Causes
- Faulty Steering Actuator
- Steering Actuator harness is open or shorted
- Steering Actuator circuit poor electrical connection
- Faulty Steering Control ECU
How do I fix code C15AA TOYOTA?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the C15AA TOYOTA code
The cost of diagnosing the C15AA TOYOTA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Anti-Lock Brake System (ABS) Warning Light ON
- Engine Light ON (or Service Engine Soon Warning Light)
C15AA TOYOTA Description
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).