Toyota AVENSIS 2000 Supplement Manual page 273

DI–142
DTC
31, 32, 33, 34, 35, 36, 38, 39
CIRCUIT DESCRIPTION
Speed Sensor
Rotor
Coil
High Speed
+V
–V
BR3583
BR3582
DTC No.
Detection of any of conditions from 1. through 3.:
1. Vehicle speed is more than 40 km/h (25 mph), pulses
are not input for 0.01 secs.
2. After the initial start or restart and when the vehicle
speed has reached 12 km/h (7 mph), the wheel with 0
km/h (0 mph) of wheel speed was detected.
31, 32, 33, 34
3. After the initial start or restart and when the vehicle
speed has reached 70 km/h (44 mph), front wheel with 0
km/h (0 mph) of wheel speed was detected.
4. In case that the vehicle equipped with the temporaly tire
is driven with high speed but without low pressure in that
temporaly tire.
Detecting abnormality in the resistance value of each speed
35, 36, 38, 39
sensor.
HINT:
S
DTC Nos. 31 and 35 are for the right front speed sensor.
S
DTC Nos. 32 and 36 are for the left front speed sensor.
S
DTC Nos. 33 and 38 are for the right rear speed sensor.
S
DTC Nos. 34 and 39 are for the left rear speed sensor.
AVENSIS/CORONA SUP (RM781E)
DIAGNOSTICS
Magnet
S
N
To ECU
Low Speed
F00010
DTC Detecting Condition
– ANTI–LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)
Speed Sensor Circuit
The speed sensor detects wheel speed and sends the ap-
propriate signals to the ECU. These signals are used to control
the ABS system. The front and rear rotors each have 48 serra-
tions.
When the rotors rotate, the magnetic field emitted by the perma-
nent magnet in the speed sensor generates an AC voltage.
Since the frequency of this AC voltage changes in direct propor-
tion to the speed of the rotor, the frequency is used by the ECU
to detect the speed of each wheel.
S Right front, left front, right rear, left rear speed sensor
S Each speed sensor circuit
S Sensor installation
S ECU
S Tire pressure
S Right front, left front, right rear, left rear speed sensor
S Each speed sensor circuit
S ECU
Trouble Area
DI7Z1–01