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Home >> Lexus >> 2020 >> LS 500 Base, AWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (W/ Vacuum Brake Booster) - Diagnostic Codes (3 Of 4) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster) >> DTC C1434: Steering Angle Sensor Output Malfunction [12/2017 - 09/2018] >> Description

DTC C1434: Steering Angle Sensor Output Malfunction [12/2017 - 09/2018]: Description

The skid control ECU (brake actuator assembly) receives signals from the steering sensor via CAN communication.

HINT: 

When a malfunction occurs in the communication line to the steering sensor, U0126 is output.

If a DTC related to the CAN communication line is output, first troubleshoot the CAN communication line.

DTCs may be stored if one of the following occurs:

DTC No. Detection Item DTC Detection Condition Trouble Area Note
C1434 Steering Angle Sensor Output Malfunction Normal communication between the skid control ECU and the steering sensor and abnormal steering sensor zero point.
  • ECU-B D NO. 2 fuse*1
  • IG1 D NO. 3 fuse
  • ECU-B P NO. 1 fuse*2
  • Steering sensor power supply
  • Steering sensor
  • Wire harness or connector
  • VGRS ECU (front steering control ECU)*2
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  1. *1: w/o Variable Gear Ratio Steering System
  2. *2: w/ Variable Gear Ratio Steering System