Fault code No.
15
Front wheel sensor (open or
short circuit)
16
Rear wheel sensor (open or
short circuit)
17*
Front wheel sensor (missing
45*
pulses)
18*
Rear wheel sensor (missing
46*
pulses)
21
Hydraulic unit assembly (de-
fective solenoid drive circuit)
ABS (ANTI-LOCK BRAKE SYSTEM)
Item
Open or short circuit is de-
tected in the front wheel sen-
sor.
Open or short circuit is de-
tected in the rear wheel sen-
sor.
Front wheel sensor signal is
not received properly. (Miss-
ing pulses are detected in
the signal while the vehicle is
traveling.)
Rear wheel sensor signal is
not received properly. (Miss-
ing pulses are detected in
the signal while the vehicle is
traveling.)
Solenoid drive circuit in the
hydraulic unit assembly is
open or short-circuited.
8-90
Symptom
• Defective coupler between
• Open or short circuit in the
• Defective front wheel sen-
• Defective coupler between
• Open or short circuit in the
• Defective rear wheel sen-
• Foreign material adhered
• Incorrect installation of the
• Defective sensor rotor or
• Defective front wheel sen-
• Foreign material adhered
• Incorrect installation of the
• Defective sensor rotor or
• Defective rear wheel sen-
• Defective hydraulic unit as-
Check point
the front wheel sensor and
the hydraulic unit assembly
wire harness between the
front wheel sensor and the
hydraulic unit assembly
sor or hydraulic unit as-
sembly
the rear wheel sensor and
the hydraulic unit assembly
wire harness between the
rear wheel sensor and the
hydraulic unit assembly
sor or hydraulic unit as-
sembly
around the front wheel sen-
sor
front wheel
incorrect installation of the
rotor
sor or incorrect installation
of the sensor
around the rear wheel sen-
sor
rear wheel
incorrect installation of the
rotor
sor or incorrect installation
of the sensor
sembly