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Home >> Lexus >> 2007 >> LS 460L >> Repair and Diagnosis >> Steering >> Power Steering >> Power Steering System >> DTC C1521 Motor Circuit Malfunction; DTC C1522 Motor Circuit Malfunction; DTC C1523 Motor Circuit Malfunction; DTC C1524 Motor Circuit Malfunction; DTC C1555 Motor Relay Welding Failure >> Description

DTC C1521 Motor Circuit Malfunction; DTC C1522 Motor Circuit Malfunction; DTC C1523 Motor Circuit Malfunction; DTC C1524 Motor Circuit Malfunction; DTC C1555 Motor Relay Welding Failure: Description

The power steering ECU supplies current to the power steering motor through this circuit.

DTC DETECTION CONDITION CHART

DTC No. DTC Detection Condition Trouble Area
C1521 Motor overcurrent
  • Wire harness
  • Power steering motor (built into power steering gear assembly)
  • Power steering ECU
C1522 Motor current sensor malfunction
  • Wire harness
  • Power steering motor (built into power steering gear assembly)
  • Power steering ECU
C1523 Excessively large current deviation
  • Wire harness
  • Power steering motor (built into power steering gear assembly)
  • Power steering ECU
C1524 Voltage error between motor terminals
  • Wire harness
  • Power steering motor (built into power steering gear assembly)
  • Power steering ECU
C1555 Motor relay malfunction is detected
  • Wire harness
  • Power steering motor (built into power steering gear assembly)
  • Power steering ECU
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