DTC Code | DTC Name |
---|---|
C1521 | Motor Circuit Malfunction |
C1522 | Motor Circuit Malfunction |
C1523 | Motor Circuit Malfunction |
C1524 | Motor Circuit Malfunction |
C1532 | ECU Malfunction |
DESCRIPTION
The power steering ECU supplies current to the power steering motor through this circuit.
DTC No. | DTC Detection Condition | Trouble Area |
---|---|---|
C1521 | Motor overcurrent |
|
C1522 | Motor current sensor malfunction |
|
C1523 | Excessively large current deviation |
|
C1524 | Voltage error between motor terminals |
|
C1532 | ECU internal malfunction (Peripheral circuit malfunction) is detected |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
RECONFIRM DTC
Check for DTCs Click here.
Result | ||||||
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Tech Tips
If DTC C1555 is output, perform troubleshooting for C1555 first.
B |
GO TO DIAGNOSTIC TROUBLE CODE CHART Click here |
A |
CHECK CONNECTORS
Check the connection of the power steering ECU and power steering link assembly connectors.
Visually inspect the terminals of the power steering ECU and power steering link assembly connectors.
Result | ||||||||||||
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Note
If replacing the power steering link assembly, clear the rotation angle sensor value calibration value, initialize the rotation angle sensor value, and calibrate the torque sensor zero point Click here.
If replacing the power steering ECU, initialize the rotation angle sensor value and calibrate the torque sensor zero point Click here.
B |
CONNECT CONNECTORS CORRECTLY |
C |
REPLACE POWER STEERING ECU Click here |
D |
REPLACE POWER STEERING LINK ASSEMBLY (w/ VGRS) Click here |
E |
REPLACE POWER STEERING LINK ASSEMBLY (w/o VGRS) Click here |
A |
CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - POWER STEERING MOTOR)
Disconnect the C1 ECU connector.
Disconnect the C3 motor connector.
Measure the resistance according to the value(s) in the table below.
Standard resistance (for LHD) | |||||||||||||||||||||
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Standard resistance (for RHD) | |||||||||||||||||||||
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NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
INSPECT POWER STEERING LINK ASSEMBLY (POWER STEERING MOTOR)
Disconnect the C3 motor connector.
Measure the resistance according to the value(s) in the table below.
Standard resistance (for LHD) | |||||||||||||||||||||
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Standard resistance (for RHD) | |||||||||||||||||||||
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*: Touch the negative probe to the power steering link assembly housing at the position shown in the illustration to perform the measurement.
Note
If replacing the power steering link assembly, clear the rotation angle sensor value calibration value, initialize the rotation angle sensor value, and calibrate the torque sensor zero point Click here.
If replacing the power steering ECU, initialize the rotation angle sensor value and calibrate the torque sensor zero point Click here.
Result | ||||||||
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B |
REPLACE POWER STEERING LINK ASSEMBLY (w/ VGRS) Click here |
C |
REPLACE POWER STEERING LINK ASSEMBLY (w/o VGRS) Click here |
A |
REPLACE POWER STEERING ECU Click here