Lexus NX: Short in Motor Circuit (C1521,C1531-C1534)
DESCRIPTION
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Return-to-normal Condition |
|---|---|---|---|---|---|
| C1521 | Short in Motor Circuit | Motor overcurrent | Power steering ECU assembly | On | Power switch on (IG) again |
| C1531 | ECU Malfunction | ECU internal malfunction (CPU malfunction) | Power steering ECU assembly | On | Power switch on (IG) again |
| C1532 | ECU Malfunction | ECU internal malfunction (Peripheral circuit malfunction) | Power steering ECU assembly | On | Power switch on (IG) again |
| C1533 | Temperature Sensor Circuit is Low or High | ECU internal malfunction (Substrate temperature sensor malfunction) | Power steering ECU assembly | Off | After normal confirmation |
| C1534 | EEPROM | ECU internal malfunction (EEPROM error) | Power steering ECU assembly | Torque and motor rotation angle sensor adjustment is set to the default value and control is continued. In this case, the warning light illuminates. | Power switch on (IG) again |
CAUTION / NOTICE / HINT
NOTICE:
If the power steering ECU assembly has been replaced, perform assist map writing.
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PROCEDURE
| 1. | CHECK FOR DTC |
(a) Clear the DTCs.
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(b) Check for DTCs.
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| Result | Proceed to |
|---|---|
| DTCs (except C1521, C1531, C1532, C1533 and C1534 DTC) are not output. | A |
| DTCs (except C1521, C1531, C1532, C1533 and C1534 DTC) are output. | B |
| A | .gif) | REPLACE POWER STEERING ECU ASSEMBLY |
| B | | REPAIR CIRCUITS INDICATED BY OUTPUT DTCS |
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Inspect the fuses for circuits related to this system before perf
