C15A3

STEERING COLUMN: VARIABLE GEAR RATIO STEERING SYSTEM: C15A3/63: Actuator Malfunction

DTC C15A3/63 - Actuator Malfunction

DTC C15C5/69 - Motor Revolution Angle Signal (Test Mode DTC)

DESCRIPTION

The steering actuator drives the internal motor using the current output from the steering control ECU to change the relative angle between tire angle and steering wheel angle.
The rotation angle sensor in the steering actuator detects the motor rotation angle and outputs this information to the steering control ECU.
If the steering control ECU detects a malfunction in the rotation angle sensor circuit, it will store DTC C15A3/63.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WIRE HARNESS




(a) Turn the engine switch off.
(b) Disconnect the connectors from the steering control ECU and the steering actuator.
(c) Measure the resistance according to the value(s) in the table below.
Resistance:






NG -- REPAIR OR REPLACE WIRE HARNESS
OK -- Continue to next step.

2. CHECK STEERING ACTUATOR




(a) Connect the connector to the steering actuator.
(b) Measure the resistance according to the value(s) in the table below.
Resistance:






NG -- REPLACE STEERING ACTUATOR
OK -- REPLACE STEERING CONTROL ECU