2000 TOYOTA CAMRY Service Repair Manual

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Page 3009 of 4770

TOYOTA CAMRY 2000 Service Repair Manual F00044
1 2
3 4
1 2
3 4
1 2
3 4 ContinuityOpen
Continuity
(+) (±)
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
DI±589
824 Author: Date:
3 Check ABS & TRAC motor relay.
CHECK:
Check continuity betwee

Page 3010 of 4770

TOYOTA CAMRY 2000 Service Repair Manual DI±590
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
825 Author: Date:
DTC 21 to 28 ABS & TRAC Actuator Solenoid Circuit
CIRCUIT DESCRIPTION
This solenoid goes on when signals are received from the E

Page 3011 of 4770

TOYOTA CAMRY 2000 Service Repair Manual F03952
SRLH
10
SR
R+
SFLR
SRRR
SRC2
AST
10
SFLR
SRRR
SRC2
AST Battery
MAIN
B±G1F4
ALT
1 B±G
F5
FL
Block
W±B
EA 3
333 2 ABS
12 Engine Room R/B No. 3
ABS & TRAC
Solenoid
Relay
16 33
3
4
5
W±L DLC1

Page 3012 of 4770

TOYOTA CAMRY 2000 Service Repair Manual DI±592
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
827 Author: Date:
2 Check for open and short circuit in harness and connector between ABS &
TRAC ECU and actuator (See page IN±31).
NG Repair or

Page 3013 of 4770

TOYOTA CAMRY 2000 Service Repair Manual BR3583
BR3582F00010
RotorSpeed Sensor
Magnet
To ECU
+V
±VHigh Speed
Low Speed
CoilNS
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
DI±593
828 Author: Date:
DTC31, 32, 33, 34Speed Sensor Circuit
CIRC

BR3583
BR3582F00010
RotorSpeed Sensor
Magnet
To ECU
+V
±VHigh Speed
Low Speed
CoilNS
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
DI±593
828 Author: Date:
DTC31, 32, 33, 34Speed Sensor Circuit
CIRCUIT DESCRIPTION
The speed sensor detects wheel speed and sends the ap-
propriate signals to the ECU. These signals are used to control
the ABS and TRAC system. The front and rear rotors each have
48 serrations.
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.

DTC No.DTC Detecting ConditionTrouble Area
31, 32, 33, 34
Detection of any of conditions from 1. through 3.:
1. ABS is in non±operation, wheel speed is 10 km/h or
more, one eighth of maximum wheel speed is greater
than the minimum wheel speed, one eighth of maximum
wheel speed is smaller than the rear maximum wheel
speed or momentary interruption of both the rear wheels
are shown in the 15 sec. or more continuously.
2. ABS is in non±operation, momentary interruption of
speed sensor occurs 7 times or more in the mean time
of switching the ignition switch ON and OFF or vehicle
speed is 20 km/h (12 mph) or more and the condition of
noise interference or non±noise interference occurs 75
times or more within 5 sec.
3. Vehicle is at a stop, malfunction signal of vehicle speed
sensor hardware open circuit is ON for 1.02 sec. contin-
uously since starting the checking of a certain vehicle.
Right front, left front, right rear, left rear speed sensor
Each speed sensor circuit
Speed sensor rotor
ECU
HINT:
DTC No. 31 is for the right front speed sensor.
DTC No. 32 is for the left front speed sensor.
DTC No. 33 is for the right rear speed sensor.
DTC No. 34 is for the left rear speed sensor.
Fail safe function:
If any trouble occurs in the speed sensor circuit, the ECU cuts off current to the ABS & TRAC solenoid relay
and prohibits ABS control and TRAC control.
DI1JP±03

Page 3014 of 4770

TOYOTA CAMRY 2000 Service Repair Manual F00116
ABS & TRAC ECU
A15
A16 B
G6W
12
R
IK2
IL1 Left Front
Speed SensorRight Front
Speed Sensor
B
G R
Left Rear
Speed Sensor Right Rear
Speed Sensor2
1
1
2
2
1A15
A15
A15
A16
A16
A16 R
IK21
G
W
I

Page 3015 of 4770

TOYOTA CAMRY 2000 Service Repair Manual R14205
1
2
R14213
12
12
12
12
12
1212
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
DI±595
830 Author: Date:
INSPECTION PROCEDURE
1 Check speed sensor.
Front:
PREPARATION:
(a) Remove the front fender

Page 3016 of 4770

TOYOTA CAMRY 2000 Service Repair Manual BR3795
OK NG OK NG
OK NGOK NG
W04200
Normal Signal Waveform
1 V / Division2 m/s / DivisionGND
DI±596
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
831 Author: Date:
2 Check for open and short circuit

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