Dtc C1528 Motor Rotation Angle Sensor Malfunction
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK POWER STEERING EARTH WIRE (POWER STEERING GEAR ASSEMBLY - BODY GROUND)
CHECK HARNESS AND CONNECTOR (POWER STEERING ECU ASSEMBLY - MOTOR ROTATION ANGLE SENSOR)
INSPECT POWER STEERING GEAR ASSEMBLY (MOTOR ROTATION ANGLE SENSOR)
REPLACE POWER STEERING ECU ASSEMBLY
INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT
RECONFIRM DTC
DTC C1528 Motor Rotation Angle Sensor Malfunction
DESCRIPTION
The motor rotation angle sensor detects the motor rotation angle and sends this information to the power steering ECU assembly.
| DTC No. | DTC Detection Item | Trouble Area |
| C1528 | Motor rotation angle sensor malfunction
(e.g. An open, short to ground, or short to B+ in the rotation angle sensor circuit) | Motor rotation angle sensor (built into power steering gear assembly)
Wire harness
Power steering earth wire
Power steering ECU assembly
|
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK POWER STEERING EARTH WIRE (POWER STEERING GEAR ASSEMBLY - BODY GROUND) |
Check the installation condition of the power steering earth wire connected to the power steering gear assembly.
- OK:
- The power steering earth wire is securely installed to the power steering gear assembly and body ground.
| | REINSTALL POWER STEERING EARTH WIRE |
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| 2.CHECK HARNESS AND CONNECTOR (POWER STEERING ECU ASSEMBLY - MOTOR ROTATION ANGLE SENSOR) |
Disconnect the C2 connector from the power steering gear assembly.
Disconnect the C4 connector from the power steering ECU.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester connection
(Symbols) | Condition | Specified condition |
| C2-1 (RZSN) - C4-7 (RZSN) | Always | Below 1 Ω |
| C2-2 (RZG) - C4-1 (RZG) | Always | Below 1 Ω |
| C2-3 (RZV) - C4-3 (RZV) | Always | Below 1 Ω |
| C2-4 (RZCS) - C4-8 (RZCS) | Always | Below 1 Ω |
| C2-1 (RZSN) - Body ground | Always | 10 kΩ or higher |
| C2-2 (RZG) - Body ground | Always | 10 kΩ or higher |
| C2-3 (RZV) - Body ground | Always | 10 kΩ or higher |
| C2-4 (RZCS) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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|
| 3.INSPECT POWER STEERING GEAR ASSEMBLY (MOTOR ROTATION ANGLE SENSOR) |
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester connection
(Symbols) | Condition | Specified condition |
| C2-1 (RZSN) - C2-2 (RZG) | Always | 50 to 140 Ω |
| C2-3 (RZV) - C2-2 (RZG) | Always | 50 to 140 Ω |
| C2-4 (RZCS) - C2-2 (RZG) | Always | 15 to 45 Ω |
- If replacing the power steering gear assembly, clear the rotation angle sensor calibration value, initialize the rotation angle sensor value, and calibrate the torque sensor zero point .
| | REPLACE POWER STEERING GEAR ASSEMBLY |
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| 4.REPLACE POWER STEERING ECU ASSEMBLY |
Replace the power steering ECU assembly .
| 5.INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT |
Initialize the rotation angle sensor value and calibrate the torque sensor zero point .
Check for DTCs .
- Result:
| DTC Condition | Proceed to |
| DTC is not output | A |
| DTC C1528 is output | B |
- If replacing the power steering gear assembly, clear the rotation angle sensor calibration value, initialize the rotation angle sensor value, and calibrate the torque sensor zero point .
| | REPLACE POWER STEERING GEAR ASSEMBLY |
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