DIAGNOSTIC TROUBLE CODE CHART
Power Steering System DTC No. | Detection Item | DTC Detection Condition | Warning Indicate | Return-to-normal Condition | Note | Link |
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C1511 | Torque Sensor1 | Torque sensor malfunction | EPS warning light: Comes on | The ECU judges the system has returned to normal or the power switch is turned on (IG) again | - |
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C1512 | Torque Sensor2 | Torque sensor malfunction | EPS warning light: Comes on | The ECU judges the system has returned to normal or the power switch is turned on (IG) again | - |
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C1513 | Torque Sensor Deviation Excessive | Torque sensor malfunction | EPS warning light: Comes on | The ECU judges the system has returned to normal or the power switch is turned on (IG) again | - |
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C1514 | Torque Sensor Power Supply Voltage | Torque sensor malfunction | EPS warning light: Comes on | Engine switch on (IG) again | - |
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C1515 | Torque Sensor Zero Point Adjustment Undone | This DTC is stored when torque sensor zero point calibration has not been performed. | EPS warning light: Comes on | Zero point calibration is performed or the power switch is turned on (IG) again | There is no malfunction if this DTC is not output again after performing zero point calibration. |
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C1516 | Torque Sensor Zero Point Adjustment Incomplete | Torque sensor zero point calibration is incomplete due to the steering wheel being touched during calibration. | EPS warning light: Comes on | Power switch on (IG) again | There is no malfunction if this DTC is not output again after clearing the DTC and torque sensor calibration value, and performing zero point calibration. |
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C1517 | Torque Hold | Torque sensor malfunction | EPS warning light: Comes on | Engine switch on (IG) again | - |
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C1521 | Short in Motor Circuit | Motor overcurrent | EPS warning light: Comes on | Engine switch on (IG) again | - |
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C1522 | Power Supply Sensor | Motor current sensor malfunction | EPS warning light: Comes on | Engine switch on (IG) again | - |
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C1523 | Current Deviation Excessive | Excessively large current deviation | EPS warning light: Comes on | Engine switch on (IG) again | - |
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C1528 | Motor Rotation Angle Sensor | Motor rotation angle sensor malfunction | EPS warning light: Comes on | Engine switch on (IG) again | - |
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C1531 | ECU Malfunction | ECU internal malfunction (CPU malfunction) | EPS warning light: Comes on | The ECU judges the system has returned to normal or the power switch is turned on (IG) again | - |
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C1532 | ECU Malfunction | ECU internal malfunction (Peripheral circuit malfunction) | EPS warning light: Comes on | Engine switch on (IG) again | - |
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C1533 | Temperature Sensor Circuit is Low or High | ECU internal malfunction (Substrate temperature sensor malfunction) | EPS warning light: Comes on | Engine switch on (IG) again | - |
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C1534 | EEPROM | ECU internal malfunction (EEPROM error) | EPS warning light: Comes on | Engine switch on (IG) again | - |
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C1541 | Vehicle Speed Signal | Vehicle speed signals via CAN communication are cut off for 3 seconds or more. | EPS warning light: Comes on | The ECU judges the system has returned to normal or the power switch is turned on (IG) again | - |
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C1551 | IG Power Supply Voltage | Open or short in IG power source circuit with engine switch on (IG) | EPS warning light: Comes on | The ECU judges the system has returned to normal or the power switch is turned on (IG) again | - |
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C1552 | PIG Power Supply Voltage | PIG power source circuit malfunction | EPS warning light: Comes on | Engine switch on (IG) again | - |
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C1554 | Power Supply Relay Failure | Power source relay circuit malfunction | EPS warning light: Comes on | Engine switch on (IG) again | - |
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C1555 | Motor Relay Welding Failure | Motor relay circuit malfunction | EPS Warning Light: Comes on | Engine switch on (IG) again | - |
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C1567 | Error in Matching of ECUs | An incompatible steering sensor is detected. | EPS warning light: Comes on | The ECU judges the system has returned to normal or the power switch is turned on (IG) again | - |
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C1581 | Assist Map Number Un-Writing | Assist map not written in power steering ECU assembly | EPS warning light: Comes on | Assist Map Writing is performed or the power switch is turned on (IG) again | - |
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C1582 | Assist Map Number Mismatch | Assist map number mismatch | EPS warning light: Does not come on | Assist Map Writing is performed or the power switch is turned on (IG) again | - |
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U0100 | Lost Communication with ECM / PCM "A" | Lost communication with ECM | EPS warning light: Does not come on | The ECU judges the system has returned to normal or the power switch is turned on (IG) again | - |
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U0129 | Lost Communication with Brake System Control Module | Lost communication with skid control ECU (Brake actuator assembly) | EPS warning light: Comes on | The ECU judges the system has returned to normal or the power switch is turned on (IG) again | - |
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U023A | Lost Communication with Front Camera Module | Lost communication with forward recognition camera | EPS warning light: Comes on | The ECU judges the system has returned to normal or the power switch is turned on (IG) again | - |
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Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Steering Wheel: Installation
INSTALLATION CAUTION / NOTICE / HINT NOTICE:
Do not replace the spiral cable with sensor sub-assembly with the battery connected and the engine switch on (IG).
Do not rotate the spiral cable with sensor sub-assembly without the steering wheel assembly installed, with the battery connected and t ...
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Navigation System: Vehicle Speed Signal Circuit between Stereo Component Amplifier and Combination Meter
DESCRIPTION The stereo component amplifier assembly receives a vehicle speed signal from the combination meter assembly to control the ASL function. HINT:
A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter assembly. The signal is changed to a pulse signal at ...