Lexus ES300 (1997 year). Manual — part 368
F00085
Right Front
Speed Sensor
Left Front
Speed Sensor
Righr Rear
Speed Sensor
Left Rear
Speed Sensor
2
1
A23
A22
1
2
1
2
2
1
A23
A23
A23
A22
A22
A22
ABS ECU
W
B
R
G
G
R
B
W
G
R
IM2
IN1
ID1
IM2
ID1
IN1
1
6
3
9
3
9
14
19
20
7
10
3
1
3
FR+
FR–
FL+
FL–
RR+
RR–
RL+
RL–
W
B
R
G
Right Front
Speed Sensor
Left Front
Speed Sensor
Righr Rear
Speed Sensor
Left Rear
Speed Sensor
2
1
A23
A22
1
2
1
2
2
1
A23
A23
A23
A22
A22
A22
ABS ECU
W
B
R
G
G
R
B
W
G
R
IM2
IN1
ID1
IM2
ID1
IN1
1
6
3
9
3
9
14
19
20
7
10
3
1
3
FR+
FR–
FL+
FL–
RR+
RR–
RL+
RL–
W
B
R
G
–
DIAGNOSTICS
ANTI–LOCK BRAKE SYSTEM
DI–249
401
1997 LEXUS ES300 (RM511U)
WIRING DIAGRAM
R14205
1
2
R14213
1 2
1 2
1 2
1 2
1 2
1 2
1 2
DI–250
–
DIAGNOSTICS
ANTI–LOCK BRAKE SYSTEM
402
1997 LEXUS ES300 (RM511U)
INSPECTION PROCEDURE
1
Check speed sensor.
Front
PREPARATION:
(a)
Remove front fender liner.
(b)
Disconnect speed sensor connector.
CHECK:
Measure resistance between terminals 1 and 2 of speed sensor
connector.
OK:
Resistance: 0.6 – 2.5 k
Ω
CHECK:
Measure resistance between terminals 1 and 2 of speed sensor
connector and body ground.
OK:
Resistance: 1 M
Ω
or higher
Rear
PREPARATION:
(a)
Remove the seat cushion and seat back.
(b)
Disconnect speed sensor connector.
CHECK:
Measure resistance between terminals 1 and 2 of speed sensor
connector.
OK:
Resistance: 1.2 – 2.3 k
Ω
CHECK:
Measure resistance between terminals 1 and 2 of speed sensor
connector and body ground.
OK:
Resistance: 1 M
Ω
or higher
NG
Replace speed sensor.
NOTICE:Check the speed sensor signal last
(See page
OK
BR3795
OK
NG
OK
NG
OK
NG
OK
NG
R00948
–
DIAGNOSTICS
ANTI–LOCK BRAKE SYSTEM
DI–251
403
1997 LEXUS ES300 (RM511U)
2
Check for open and short in harness and connector between each speed sensor
and ECU (See page
NG
Repair or replace harness or connector.
OK
3
Check sensor installation.
CHECK:
Check the speed sensor installation.
OK:
The installation bolt is tightened properly and there is
no clearance between the sensor and rear axle carri-
er.
NG
Replace speed sensor.
NOTICE:Check the speed sensor signal last
(See page
OK
4
Check sensor rotor and sensor tip.
Front
PREPARATION:
Remove front drive shaft (See page
CHECK:
Check sensor rotor serrations.
OK:
No scratches or missing teeth or foreign objects.
PREPARATION:
Remove the front speed sensor (See page
).
CHECK:
Check the sensor tip.
OK:
No scratches or foreign objects on the sensor tip.
R00947
DI–252
–
DIAGNOSTICS
ANTI–LOCK BRAKE SYSTEM
404
1997 LEXUS ES300 (RM511U)
Rear
PREPARATION:
Remove the axle hub (See page
CHECK:
Check the sensor rotor serrations.
OK:
No scratches or missing teeth or foreign objects.
PREPARATION:
Remove the rear speed sensor (See page
CHECK:
Check the sensor tip.
OK:
No scratches or foreign objects on the sensor tip.
NG
Replace speed sensor or rotor.
NOTICE:Check the speed sensor signal last
(See page
OK
Check and replace ABS ECU.
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