Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - VARIABLE GEAR RATIO STEERING
CHECK HARNESS AND CONNECTOR (STEERING CONTROL ECU - STEERING ACTUATOR)
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 the 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.
| DTC Code | DTC Detection Condition | Trouble Area |
| C15A3/63 | The steering control ECU detects a malfunction in the rotation angle sensor circuit. | Harness or connector Steering actuator Steering control ECU |
| C15C5/69 | A steering signal indicating a motor rotation angle of 36° or more (to the left or right) is input after entering test mode.* | Harness or connector Steering actuator Steering control ECU |
- HINT:
- *: A tire angle of 36° and a motor rotation angle of 36° correspond to the steering wheel angle. The amount of change in tire angle and motor rotation angle is from when the mode is changed to test mode.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK HARNESS AND CONNECTOR (STEERING CONTROL ECU - STEERING ACTUATOR) |
Disconnect the E79 steering control ECU connector.
Disconnect the E80 steering actuator connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition E79-4 (S1) - E80-2 (S1+) Always Below 1 Ω E79-6 (RV) - E80-1 (RV+) E79-14 (S2) - E80-9 (S2+) E79-15 (RG) - E80-10 (RG+) E79-4 (S1) - E79-6 (RV) Always 10 kΩ or higher E79-4 (S1) - E79-14 (S2) E79-4 (S1) - E79-15 (RG) E79-6 (RV) - E79-14 (S2) E79-6 (RV) - E79-15 (RG) E79-14 (S2) - E79-15 (RG) E79-4 (S1) - Body ground E79-6 (RV) - Body ground E79-14 (S2) - Body ground E79-15 (RG) - Body ground
|
| ||||
| OK | |
| 2.CHECK STEERING ACTUATOR |
Disconnect the E79 steering control ECU connector.
Measure the resistance according to the value(s) in the table below.
- HINT:
- The resistance must be measured with the steering actuator connector connected.
- Standard Resistance:
Tester Connection Condition Specified Condition E79-4 (S1) - E79-6 (RV) Always Below 200 Ω E79-4 (S1) - E79-14 (S2) E79-4 (S1) - E79-15 (RG) E79-6 (RV) - E79-14 (S2) E79-6 (RV) - E79-15 (RG) E79-14 (S2) - E79-15 (RG) E79-4 (S1) - Body ground Always 10 kΩ or higher E79-6 (RV) - Body ground E79-14 (S2) - Body ground E79-15 (RG) - Body ground
| Result Result | Proceed to |
| NG | A |
| OK (for LHD) | B |
| OK (for RHD) | C |
|
| ||||
|
| ||||
| A | ||
| ||