Page 2929 of 4770

F00049
1 (+) (±)
Engine Room
R/B No. 3
2
34 1 (+) (±)
Engine Room
R/B No. 32
34 1 (+) (±)
Engine Room
R/B No. 32
34
1 (+) (±)
Engine Room
R/B No. 3
2
34
F07154
3 3
ECU ECU
ECU
ABS
Motor
Relay2
A4
A4
A18
MT
2
2
ECU
ABS
Actuator
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
DI±509
744 Author: Date:
INSPECTION PROCEDURE
1 Check voltage between terminal 1 of Engine Room R/B No. 3 (for ABS motor
relay) and body ground.
PREPARATION:
Remove ABS motor relay from Engine Room R/B No. 3.
CHECK:
Measure voltage between terminal 1 of Engine Room R/B No.
3 (for ABS motor relay) and body ground.
OK:
Voltage: 10 ± 14 V
NG Check and repair harness or connector.
OK
2 Check continuity between terminal 2 of ABS motor relay and terminal MT of ABS
ECU.
CHECK:
Check continuity between terminal 2 of Engine Room R/B No.3
(for ABS motor relay) and terminal MT of ABS ECU.
OK:
Continuity
HINT:
There is a resistance of 4 ~ 6 W between terminals A4 ± 2 and
A4 ± 3 of ABS actuator.
NG Repair or replace harness or ABS actuator.
OK
Page 2930 of 4770
F00044
1 2
3 4
1 2
3 4
1 2
3 4 Open
Continuity
Continuity
(+)(±)
DI±510
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
745 Author: Date:
3 Check ABS motor relay.
CHECK:
Check continuity between each terminal of ABS motor relay.
OK:
Terminals 3 and 4Continuity (Reference value 62 W)
Terminals 1 and 2Open
CHECK:
(a) Apply battery positive voltage between terminals 3 and 4.
(b) Check continuity between terminals of ABS motor relay.
OK:
Terminals 1 and 2Continuity
NG Replace ABS motor relay.
OK
4 Check for open and short circuit in harness and connector between ABS motor
relay and ABS ECU (See page IN±31).
NG Repair or replace harness or connector.
OK
If the same code is still output after the DTC is deleted, check the contact condition of each con-
nection.
If the connections are normal, the ECU may be defective.
Page 2931 of 4770

± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
DI±511
746 Author: Date:
DTC 21, 22, 23, 24 ABS Actuator Solenoid Circuit
CIRCUIT DESCRIPTION
This solenoid goes on when signals are received from the ECU and controls the pressure acting on the wheel
cylinders thus controlling the braking force.
DTC No.DTC Detecting ConditionTrouble Area
21
Condition 1. or 2. continues for 0.05 sec. or more:
1. IG1 terminal voltage of ABS ECU is 9.5 ± 18.5 V, there
is open or short circuit in actuator solenoid SFRR or
SFRH.
2. IG1 terminal voltage of ABS ECU is 9.5 ± 18.5 V, and
while ABS is control in operation.*
1
ABS actuator
SFRR or SFRH circuit
22
Condition 1. or 2. continues for 0.05 sec. or more:
1. IG1 terminal voltage of ABS ECU is 9.5 ± 18.5 V, there
is open or short circuit in actuator solenoid SFLR or
SFLH.
2. IG1 terminal voltage of ABS ECU is 9.5 ± 18.5 V, and
while ABS is control in operation.*
1
ABS actuator
SFLR or SFLH circuit
23
Condition 1. or 2. continues for 0.05 sec. or more:
1. IG1 terminal voltage of ABS ECU is 9.5 ± 18.5 V, there
is open or short circuit in actuator solenoid SRRR or
SRRH.
2. IG1 terminal voltage of ABS ECU is 9.5 ± 18.5 V, and
while ABS is control in operation.*
1
ABS actuator
SRRR or SRRH circuit
24
Condition 1. or 2. continues for 0.05 sec. or more:
1. IG1 terminal voltage of ABS ECU is 9.5 ± 18.5 V, there
is open or short circuit in actuator solenoid SRLR or
SRLH.
2. IG1 terminal voltage of ABS ECU is 9.5 ± 18.5 V, and
while ABS is control in operation.*
1
ABS actuator
SRLR or SRLH circuit
*1
Solenoid relay contact ON condition:
All of solenoid terminal voltage is half of IG1 terminal voltage or less than.
Fail safe function:
If trouble occurs in the actuator solenoid circuit, the ECU cuts off current to the ABS solenoid relay and pro-
hibits ABS control.
DI03J±03
Page 2932 of 4770
F07147
ABS Solenoid RelayGR±R1
IK1
GR±RABS ECU
26
A19R+
34
56
33
3
3 1
2 DLC1Engine Room
R/B No.3
GR
7
2ABS
1
3
W±L
B±G
Fusible Link Block
1
F5 F41
B±G
FL Main
Battery ALT
EAW±B4
A4A18 SR
ABS
Actuator
1
A5
A55
A53
7
A5
A5
A5
A5
A54
8
2
6R±B
W±R11
IK2
IK212R±B
W±R2
A19
A191
A18
A18
A18
A18
A19
A19 L±B
W±L
W±R
R±G
G±Y
LG±B13
IK2
IK255
6
11
12
15
14SFRH
SFRR
SFLH
SFLR
SRRH
SRRR
SRLH
SRLR 3
G±Y
LG±B DI±512
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
747 Author: Date:
WIRING DIAGRAM
Page 2933 of 4770
W00714
A4
A5
1 2 3
4
5
6
7 8
4
A4
A5
1 2 3
4
5
6
7 8
4
A4
A5
1 2 3
4
5
6
7 8
4
A4
A5
1 2 3
4
5
6
7 8
4
A4
A5
1 2 3
4
5
6
7 8
4
A4
A5
1 2 3
4
5
6
7 8
4
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
DI±513
748 Author: Date:
INSPECTION PROCEDURE
1 Check ABS actuator solenoid.
PREPARATION:
Disconnect the 2 connectors from ABS actuator.
CHECK:
Check continuity between terminals A4 ± 4 and A5 ± 1, 2, 3, 4,
5, 6, 7, 8 of ABS actuator connector.
OK:
Continuity
HINT:
Resistance of each solenoid coil is 1.2 W.
NG Replace ABS actuator.
OK
2 Check for open and short circuit in harness and connector between ABS ECU
and actuator (See page IN±31).
NG Repair or replace harness or connector.
OK
If the same code is still output after the DTC is deleted, check the contact condition of each con-
nection.
If the connections are normal, the ECU may be defective.
Page 2934 of 4770

BR3583
BR3582F00010
RotorSpeed Sensor
Magnet
To ECU
+V
±VHigh Speed
Low Speed
CoilNS
DI±514
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
749 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 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.
DTC No.DTC Detecting ConditionTrouble Area
31, 32, 33, 34
Detection of any of conditions from 1. through 4.:
1. Vehicle speed is at 10 km/h (6 mph) or more and the
speed sensor signal circuit is open or short circuit con-
tinues for 15 sec. or more.
2. Momentary interruption of the speed sensor signal oc-
curs 7 times or more.
3. Vehicle speed is at 20 km/h (12mph) or more and inter-
ference on the speed sensor signal continues for 5 sec.
or more.
4. Open circuit condition of the speed sensor signal circuit
continues for 0.5 sec. or more.
Right front, left front, right rear, left rear speed sensor
Each speed sensor circuit
Speed sensor rotor
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 trouble occurs in the speed sensor circuit, the ECU cuts off current to the ABS solenoid relay and prohibits
ABS control.
DI1JM±02
Page 2935 of 4770
F00116
Right Front
Speed Sensor
Left Front
Speed Sensor
Right Rear
Speed Sensor
Left Rear
Speed Sensor2
1A18
A19 12
1
2
2 1A18
A18
A18
A19
A19
A19ABS ECU
W
B
R
G
B
G RB WG R
IK2
IL1
ID1IK2
ID1 IL11
6
2
1
3
983
FR+
FR±
FL+
FL±
RR+
RR±
RL+
RL±Right Front
Speed Sensor
Left Front
Speed Sensor
Left Rear
Speed Sensor2
1A18
A19 12
1
2
2 1A18
A18
A18
A19
A19
A19ABS ECU
W
B
R
G
W
G RB WG R
IK2
IL1
ID1IK2
ID1 IL11
6
2
1
3
99
93
FR+
FR±
FL+
FL±
RR+
RR±
RL+
RL± 2
10
23
R
G22
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
DI±515
750 Author: Date:
WIRING DIAGRAM
Page 2936 of 4770
R14205
1
2
R14213
12 12
12
12
12
1212
DI±516
± DIAGNOSTICSANTI±LOCK BRAKE SYSTEM (DENSO Made)
751 Author: Date:
INSPECTION PROCEDURE
1 Check speed sensor.
Front:
PREPARATION:
(a) Remove the front fender liner.
(b) Disconnect the speed sensor connector.
CHECK:
Measure resistance between terminals 1 and 2 of speed sensor
connector.
OK:
Resistance: 0.6 ± 2.5 kW
CHECK:
Measure resistance between terminals 1 and 2 of speed sensor
connector and body ground.
OK:
Resistance: 1 MW or higher
Rear:
PREPARATION:
(a) Remove the seat cushion and side seatback.
(b) Disconnect the speed sensor connector.
CHECK:
Measure resistance between terminals 1 and 2 of speed sensor
connector.
OK:
Resistance: 1.2 ± 2.3 kW
CHECK:
Measure resistance between terminals 1 and 2 of speed sensor
connector and body ground.
OK:
Resistance: 1 MW or higher
NG Replace speed sensor.
NOTICE:
Check the speed sensor signal last (See page DI±493).
OK