DESCRIPTION
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Warning Indicate |
Return-to-normal Condition |
Note |
---|---|---|---|---|---|---|
C1521 |
Short in Motor Circuit |
Motor overcurrent |
Power steering ECU assembly |
EPS warning light: Comes on |
Ignition switch ON again |
- |
C1522 |
Power Supply Sensor |
Motor current sensor malfunction |
Power steering ECU assembly |
EPS warning light: Comes on |
Ignition switch ON again |
- |
C1523 |
Current Deviation Excessive |
Excessively large current deviation |
Power steering ECU assembly |
EPS warning light: Comes on |
Ignition switch ON again |
- |
C1528 |
Motor Rotation Angle Sensor |
Motor rotation angle sensor malfunction |
Power steering ECU assembly |
EPS warning light: Comes on |
Ignition switch ON again |
- |
C1531 |
ECU Malfunction |
ECU internal malfunction (CPU malfunction) |
Power steering ECU assembly |
EPS warning light: Comes on |
The ECU judges the system has returned to normal or the ignition switch is turned ON again |
- |
C1532 |
ECU Malfunction |
ECU internal malfunction (Peripheral circuit malfunction) |
Power steering ECU assembly |
EPS warning light: Comes on |
Ignition switch ON again |
- |
C1533 |
Temperature Sensor Circuit is Low or High |
ECU internal malfunction (Substrate temperature sensor malfunction) |
Power steering ECU assembly |
EPS warning light: Comes on |
Ignition switch ON again |
- |
C1534 |
EEPROM |
ECU internal malfunction (EEPROM error) |
Power steering ECU assembly |
EPS warning light: Comes on |
Ignition switch ON again |
- |
C1555 |
Motor Relay Welding Failure |
Motor relay circuit malfunction |
Power steering ECU assembly |
EPS Warning Light: Comes on |
Ignition switch ON again |
- |
CAUTION / NOTICE / HINT
NOTICE:
If the power steering ECU assembly has been replaced, perform assist map writing and torque sensor zero point calibration.
Click here
PROCEDURE
1. |
CHECK FOR DTC |
(a) Clear the DTCs.
Click here
Chassis > EMPS > Clear DTCs(b) Check for DTCs.
Click here
Chassis > EMPS > Trouble Codes
Result |
Proceed to |
---|---|
DTCs other than C1521, C1522, C1523, C1528, C1531, C1532, C1533, C1534 or C1555 are not output. |
A |
DTCs other than C1521, C1522, C1523, C1528, C1531, C1532, C1533, C1534 or C1555 are output. |
B |
A |
REPLACE POWER STEERING ECU ASSEMBLY |
B |
GO TO DIAGNOSTIC TROUBLE CODE CHART |
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