DTC C1413: Front Speed Sensor RH Circuit Output; DTC C1414: Front Speed Sensor LH Circuit Output [11/2017 - 03/2019]: Description

The speed sensor detects wheel speed and sends the appropriate signals to the 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 skid control ECU (brake actuator assembly).

HINT:

When the connectors between the speed sensor and skid control ECU (brake actuator assembly) are connected, the following waveform is output.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C1413	Front Speed Sensor RH Circuit Output	Any of the following is detected: An open in the sensor signal circuit of a malfunctioning area occurs 255 times or more. At a vehicle speed of 20 km/h (12 mph) or more, noise occurs in the sensor signals of a malfunctioning wheel 75 times or more within 5 seconds. At a vehicle speed of 10 km/h (6 mph) or more, noise occurs once per rotor rotation for 15 seconds or more.	Front speed sensor RH (front axle hub sub-assembly RH) installation Front speed sensor RH (front axle hub sub-assembly RH) Front speed sensor rotor RH (front axle hub sub-assembly RH) Wire harness or connector Skid control ECU (brake actuator assembly)
C1414	Front Speed Sensor LH Circuit Output	Any of the following is detected: An open in the sensor signal circuit of a malfunctioning area occurs 255 times or more. At a vehicle speed of 20 km/h (12 mph) or more, noise occurs in the sensor signals of a malfunctioning wheel 75 times or more within 5 seconds. At a vehicle speed of 10 km/h (6 mph) or more, noise occurs once per rotor rotation for 15 seconds or more.	Front speed sensor LH (front axle hub sub-assembly LH) installation Front speed sensor LH (front axle hub sub-assembly LH) Front speed sensor rotor LH (front axle hub sub-assembly LH) Wire harness or connector Skid control ECU (brake actuator assembly)

HINT:

for C1413 and C1414: Even after the trouble areas are repaired, the ABS warning light will not go off unless the following operations are performed.

Drive the vehicle at 30 km/h (19 mph) for 30 seconds or more and check that the ABS warning light goes off.
Clear the DTCs.

HINT:

DTC C1413 is for the front speed sensor RH.
DTC C1414 is for the front speed sensor LH.