DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 104 (Electronically Controlled Brake System (HV) - Diagnostic Codes (03 Of 11)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C0512-12: Right Rear Wheel Speed Sensor Circuit Short to Battery [11/2023 - ] >> Description

DTC C0512-12: Right Rear Wheel Speed Sensor Circuit Short to Battery [11/2023 - ]: Description

WARNING: This page is about a different variant/trim than selected.

The speed sensor detects wheel speed and sends the appropriate signals to the No. 2 skid control ECU (brake actuator assembly). These signals are used for brake control.

Speed sensor rotors have rows of alternating N and S magnetic poles, and their magnetic fields change when the rotors turn.

Each speed sensor detects that magnetic change and sends a pulse signal to the No. 2 skid control ECU (brake actuator assembly).

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note
C0512-12 Right Rear Wheel Speed Sensor Circuit Short to Battery The speed sensor short signal is ON continuously for 0.5 seconds or more.
  • Rear skid control sensor RH*1
  • Rear speed sensor RH (rear axle hub and bearing assembly RH)*2
  • Skid control sensor wire RH (No. 1 parking brake wire assembly)
  • Wire harness and connector
  • No. 2 skid control ECU (brake actuator assembly)
Comes on
  • SAE Code: C0515
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
  1. *1: for AWD
  2. *2: for 2WD