Page 148 - Workshop Manual - Tunland (2017)

04-10 DIAGNOSTICS - ANTI-LOCK BRAKING SYSTEM (ABS)

C0032–LEFT FRONT WHEEL SPEED SENSOR CIRCUIT FAILURE:

OPEN CIRCUIT OR SHORT CIRCUIT
C0031– LEFT FRONT WHEEL SPEED SENSOR FAILURE:THE

SCOPE, PERFORMANCE, CONTINUITY

04 C0035–RIGHT FRONT WHEEL SPEED SENSOR FAILURE: OPEN
CIRCUIT OR SHORT CIRCUIT

C0034–RIGHT FRONT WHEEL SPEED SENSOR FAILURE:THE
SCOPE, PERFORMANCE, CONTINUITY

Speed sensor detects wheel speed and transmits
speed signal to the ABS module. ABS system uses
these signals to control each actuator.

When the signal wheel rotates, its wire will intersect
with the magnetic line of force of the magnet in the
speed sensor, therefore, an alternate current voltage
(AC) is produced. Because the voltage frequency
of the AC voltage is proportional to the rotational
speed of signal wheel, the speed of the wheel can
be detected.

Diagnostic Logic

DTC code DTC inspection conditions Trouble location

• If the vehicle speed is not
lower than 20km/h, no
signal will be input to the
ABS module within 15 • Right front, left front wheel
C0301 seconds. speed sensor

C0302 • When the ignition switch is • Right front, left front wheel
C0304 changed from OFF position speed sensor circuit
C0305 to ON position, the wheel • Right front, left front sensor
speed sensor signal will be signal wheel
interrupted momentarily.
• Wheel speed sensor circuit
is open