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Home >> Lexus >> 2022 >> LS 500h RWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (W/ Advanced Park) - Diagnostic Codes (1 Of 5) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Advanced Park) >> DTC C050C-3A: Left Rear Wheel Speed Sensor Signal Has Too Many Pulses; DTC C0512-3A: Right Rear Wheel Speed Sensor Signal Has Too Many Pulses [11/2021 - 10/2023] >> Description

DTC C050C-3A: Left Rear Wheel Speed Sensor Signal Has Too Many Pulses; DTC C0512-3A: Right Rear Wheel Speed Sensor Signal Has Too Many Pulses [11/2021 - 10/2023]: Description

Refer to DTC C050C-12.

Refer to DTC C050C-12: Left Rear Wheel Speed Sensor Circuit Short to Battery [11/2021 - 10/2023] 

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note
C050C-3A Left Rear Wheel Speed Sensor Signal Has Too Many Pulses Either of the following is detected:
  • When not in Dealer Mode (Signal Check) or Inspection Mode, the output of the speed sensor detected by the No. 2 skid control ECU (brake actuator assembly) is too high for 5 seconds or more.
  • When not in Dealer Mode (Test Mode) or Inspection Mode, the speed sensor detects 3 or more wheels in reverse at a vehicle speed exceeding 3 km/h (1.86 mph), and the vehicle pulse width less than 0.000302 seconds generates 75 times or more
 No. 2 skid control ECU (brake actuator assembly) Comes on
  • SAE Code: C050D (Case 4 and 5)
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
C0512-3A Right Rear Wheel Speed Sensor Signal Has Too Many Pulses Either of the following is detected:
  • When not in Dealer Mode (Signal Check) or Inspection Mode, the output of the speed sensor detected by the No. 2 skid control ECU (brake actuator assembly) is too high for 5 seconds or more.
  • When not in Dealer Mode (Test Mode) or Inspection Mode, the speed sensor detects 3 or more wheels in reverse at a vehicle speed exceeding 3 km/h (1.86 mph), and the vehicle pulse width less than 0.000302 seconds generates 75 times or more
 No. 2 skid control ECU (brake actuator assembly) Comes on
  • SAE Code: C0513 (Case 4 and 5)
  • Output ECU: No. 2 skid control ECU (brake actuator assembly)
C050C-3A DTC DETECTION CONDITIONS

  Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition When not in Dealer Mode (Signal Check) or Inspection Mode ◦ ◦
Malfunction Status When the output of the speed sensor detected by the No. 2 skid control ECU (brake actuator assembly) is too high ◦ -
When the speed sensor detects 3 or more wheels in reverse at a vehicle speed exceeding 3 km/h (1.86 mph), and the vehicle pulse width is less than 0.000302 seconds - ◦
Detection Time 5 seconds or more. 75 times or more.
Number of Trips 1 trip 1 trip

HINT: 

DTC will be output when conditions for either of the patterns in the table above are met.

C0512-3A DTC DETECTION CONDITIONS

  Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition When not in Dealer Mode (Signal Check) or Inspection Mode ◦ ◦
Malfunction Status When the output of the speed sensor detected by the No. 2 skid control ECU (brake actuator assembly) is too high ◦ -
When the speed sensor detects 3 or more wheels in reverse at a vehicle speed exceeding 3 km/h (1.86 mph), and the vehicle pulse width is less than 0.000302 seconds - ◦
Detection Time 5 seconds or more. 75 times or more.
Number of Trips 1 trip 1 trip

HINT: 

DTC will be output when conditions for either of the patterns in the table above are met.

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