DTC C15A4/64 Actuator Malfunction
DTC C15A9/66 Lock Holder Deviation Detection
DTC C15AA/66 Lock Mechanism Release Incomplete
DTC C15AB/66 Lock Mechanism Insertion Malfunction
for Preparation Click here
DESCRIPTION
When the 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 these DTCs.
DTC Code DTC Detection Condition Trouble Area
C15A4/64
The steering control ECU detects that the difference between the actuator target angle
and the actuator position is approximately 30° or more for 1 second.
Steering actuator
C15A9/66
The steering control ECU detects that the lock pin is not aligned with the lock holder
correctly.
Steering actuator
C15AA/66
The steering control ECU cannot operate because the actuator lock cannot be
released.
Steering actuator
C15AB/66
The steering control ECU detects that the lock pin cannot be inserted into the lock
holder.
Steering actuator
INSPECTION PROCEDURE
1.REPLACE STEERING ACTUATOR ASSEMBLY
a. Replace steering actuator assembly ( Click here).
NOTICE:
Before replacing the steering actuator assembly, make sure to use the intelligent tester Data List to confirm and record the "Elec Angle
Position" value (Click here).
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