2005 TOYOTA AVENSIS Actuator

F45132
Battery FL MAINSkid Control ECU
with Actuator
B±G (*1) L (*1)
1 ALT VSC Engine Room R/B No.4 & Engine Room J/B No.4
1
4B
W±BS1
S1109
+BM
12
1 2
GND1 GND2
S16
W±BW±B
*1: 1AZ±FSE
*2: 1CD±FTVEA4
L (*2)
W (*2)
2 12 33 11B1 ALT Engine Room R/B No.3Engine Room R/B No.1 &
Engine Room J/B No.1
B (*2)
B±G (*1)VSC 05±784
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC C0273/13 OPEN OR SHORT CIRCUIT IN ABS MOTOR
RELAY CIRCUIT
CIRCUIT DESCRIPTION
The ABS motor relay supplies power to the ABS pump motor. While the ABS & BA & TRC & VSC are acti-
vated, the ECU switches the motor relay ON and operates the ABS pump motor.
DTC No.DTC Detecting ConditionTrouble Area
C0273/13
Detection of any conditions from 1 to 3:
1. After actuation of the motor relay, pump motor voltage is
not supplied within 0.08 second.
2. Pump motor voltage is at high level for 2.5 seconds or
more although motor relay does not actuate .
3. Pump motor voltage keeps low level for longer than 0.04
second and the pump repeats activating for 0.7 se-
conds 3 times maximum. At the last time of activation,
the pump motor goes dead because of short circuit.

ABS motor relay

ABS motor relay circuit
WIRING DIAGRAM
05781±02

F45132
Battery
FL MAIN Skid Control ECU
with Actuator
B±G (*1)R (*1) 1
ALTVSC
Engine Room R/B No.4 & Engine Room J/B No.4
1
4B
W±BS1
S1
10 5
+BS
12
1
2
GND1 GND2
S1 6
W±B W±B
*1: 1AZ±FSE
*2: 1CD±FTV EA4
R (*2)
W (*2)
2
12
331
1B1
ALT
Engine Room R/B No.3
Engine Room R/B No.1 &
Engine Room J/B No.1
B (*2)
B±G (*1) VSC
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
05±783
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
INSPECTION PROCEDURE
1RECONFIRM DTC
(a)Check if other DTCs are detected (See page 05±756).
YES REPAIR CIRCUIT INDICATED BY OUTPUTCODE
NO
REPLACE ABS & TRACTION ACTUATOR ASSY(See page 32±57)

F40884
A4
ABS Speed Sensor
Front LH
A5
ABS Speed Sensor
Front RH41
FL+ S1 L±Y
24
FL± S1
21
FR+ S1
22
FR± S1 R±L
W
B 1 2
12Skid Control ECU
with Actuator
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
05±775
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 if you are using the hand±held tester and start from step 2 if you are not using
the hand±held tester.
1 READ VALUE OF HAND±HELD TESTER(FRONT SPEED SENSOR)
(a) Select the item ºWHEEL SPEED FL (FR)º in the DATA LIST and read the value displayed on the hand±
held tester.
(b) Check that there is no difference between the speed value output from the speed sensor displayed
on the hand±held tester and the speed value displayed on the speedometer when driving the vehicle.
OK:
There is almost no difference in the displayed speed value.
HINT:
There is tolerance of
10 % in the speedometer indication.
OK Go to step 5
NG

C93876
21
W04200
Normal Signal Waveform
1 V / Division 2 m/s / Division GND
05±776
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
2INSPECT FRONT SPEED SENSOR
(a)Remove the fender liner.
(b)Disconnect the speed sensor connector.
(c)Measure resistance between terminals 1 and 2 of the speed sensor connector.
OK:
Resistance: 1.2 to 1.6 k at 20 C (68 F)
(d)Measure resistance between each of terminals 1 and 2 of
the speed sensor connector and body ground.
OK:
Resistance: 1 M  or higher
NGREPLACE SPEED SENSOR FRONT RH
NGREPLACE SPEED SENSOR FRONT LH
NOTICE:
Check the speed sensor signal last (See page 05±756).
OK
3CHECK HARNESS AND CONNECTOR(FRONT SPEED SENSOR±SKID CONTROL ECU)
(a)Check for an open and short circuit in harness and connector between each fro\
nt speed sensor and
the skid control ECU connector (See page 01±32).
NGREPAIR OR REPLACE HARNESS ORCONNECTOR
OK
4INSPECT SPEED SENSOR AND SENSOR ROTOR SERRATIONS
(REFERENCE) INSPECTION USING OSCILLOSCOPE
(a)Connect the oscilloscope to the terminals FR+ ± FR± and FL+ ± FL± of the skid control ECU.
(b)Drive the vehicle at about 30 km/h (19 mph), and check
the signal waveform.
HINT:

As the vehicle speed (wheel revolution speed) increases,
a cycle of the waveform becomes shorter and the fluctua-
tion in the output voltage becomes greater.

When noise is identified in the waveform on the oscillo-
scope, error signals are generated due to the speed sen-
sor rotor's scratches, looseness or foreign matter depos-
ited on it.
OKREPLACE ABS & TRACTION ACTUATOR ASSY (See page 32±57)
NG

BR3795OKNG
BR3719
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
05±777
AVENSIS REPAIR MANUAL (RM1018E)
5INSPECT FRONT SPEED SENSOR INSTALLATION
(a)Check the speed sensor installation.
OK:
The installation bolt is tightened properly and there is
no clearance between the sensor and front steering
knuckle.
Torque: 8.0 N
m (82 kgf
cm, 71 in.
lbf)
NGREPLACE SPEED SENSOR FRONT RH
NGREPLACE SPEED SENSOR FRONT LH
NOTICE:
Check the speed sensor signal last (See page 05±756).
OK
6INSPECT SPEED SENSOR TIP
(a)Remove the front speed sensor (See page 32±59).
(b)Check the sensor tip. OK:
No scratches or foreign objects on the sensor tip.
NGCLEAN OR REPAIR SPEED SENSOR
NOTICE:
Check the speed sensor signal last (See page 05±756).
OK
7INSPECT SPEED SENSOR ROTOR
(a)Remove the front speed sensor rotor (See page 30±6).
(b) Check the sensor rotor serrations. OK:
No scratches, missing teeth or foreign objects.
HINT:
If a foreign object is attached, remove it and after reassembling,
check the output waveform.
NG CLEAN OR REPAIR SPEED SENSOR ROTOR
NOTICE:
Check the speed sensor signal last (See page 05±756).
OK
REPLACE ABS & TRACTION ACTUATOR ASSY(See page 32±57)

0542T±04
05±772
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
PROBLEM SYMPTOMS TABLE
If a normal code is displayed during the DTC check but the problem still o\
ccurs, check the circuits for each
problem symptom in the order given in the table below and proceed to the releva\
nt troubleshooting page.
NOTICE:
When replacing the ABS & TRACTION actuator, sensor or etc., turn the ignition switch to OFF.
SymptomSuspect AreaSee page
ABS does not operate
BA does not operate
EBD does not operate
If the symptoms still occur even after the following circuits
in suspect areas are inspected and proved to be normal,
replace the ABS & TRACTION actuator.
1. Check the DTC again and make sure that the normal code is output.
2. IG power source circuit
3. Speed sensor circuit
4. Check the brake master cylinder with a ABS actuator checker or hand±held tester.
If there is malfunction, check the hydraulic circuit for leak-
age.
05±756
05±808
05±774
05±778 32±56
ABS does not operate properly
BA does not operate properly
EBD does not operate properly
If the symptoms still occur even after the following circuits
in suspect areas are inspected and proved to be normal,
replace the ABS & TRACTION actuator.
1. Check the DTC again and make sure that the normal code is output.
2. Speed sensor circuit
3. Stop light switch circuit
4. Check the brake master cylinder with a ABS actuator checker or hand±held tester.
If there is malfunction, check the hydraulic circuit for leak-
age.
05±756
05±774
05±778
05±815 32±56
ABS warning light malfunction1. ABS warning light circuit
2. ABS & TRACTION actuator05±827 ±
DTC of ABS check cannot be performed
If the symptoms still occur even after the following circuits
in suspect areas are inspected and proved to be normal,
replace the ABS & TRACTION actuator.
1. Check the DTC again and make sure that the normal code is output.
2. Tc terminal circuit
05±756
05±852
Sensor signal check cannot be performed1. Ts terminal circuit
2. ABS & TRACTION actuator05±854 ±
TRC does not operate
If the symptoms still occur even after the following circuits
in suspect areas are inspected and proved to be normal,
replace the ABS & TRACTION actuator.
1. Check the DTC again and make sure that the normal code is output.
2. IG power source circuit
3. Check the hydraulic circuit for leakage.
4. Speed sensor circuit
05±756
05±808 ±
05±774
05±778

±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
05±773
AVENSIS REPAIR MANUAL (RM1018E) Symptom
Suspect AreaSee page
VSC does not operate
If the symptoms still occur even after the following circuits
in suspect areas are inspected and proved to be normal,
replace the ABS & TRACTION actuator.
1. Check the DTC again and make sure that the normal
code is output.
2. IG power source circuit
3. Check the hydraulic circuit for leakage.
4. Speed sensor circuit
5. Yaw rate sensor and deceleration sensor circuit
6. Steering angle sensor circuit
05±756
05±808 ±
05±774
05±778
05±790
05±793
05±801
SLIP indicator light malfunction1. SLIP indicator light circuit
2. ABS & TRACTION actuator05±848 ±
TRC OFF indicator malfunction
If the symptoms still occur even after the following circuits
in suspect areas are inspected and proved to be normal,
replace the ABS & TRACTION actuator.
1. Check the DTC again and make sure that the normal code is output.
2. TRC OFF switch circuit
05±756
05±844
DTC of VSC check cannot be performed
If the symptoms still occur even after the following circuits
in suspect areas are inspected and proved to be normal,
replace the ABS & TRACTION actuator.
1. Check the DTC again and make sure that the normal code is output.
2. Tc terminal circuit
05±756
05±852
VSC warning light malfunction
If the symptoms still occur even after the following circuits
in suspect areas are inspected and proved to be normal,
replace the ABS & TRACTION actuator.
1. Check the DTC again and make sure that the normal code is output.
2. VSC warning circuit
05±756
05±831

F45132
Battery FL MAINSkid Control ECU
with Actuator
B±G (*1) L (*1)
1 ALT Engine Room R/B No.4 & Engine Room J/B No.4
1
4B
W±BS1
S1 109
+BM
12
1 2
GND1 GND2
S16
W±BW±B
*1: 1AZ±FSE
*2: 1CD±FTVEA4
L (*2)
W (*2)
2 12 33 11B1VSC
ALT Engine Room R/B No.3Engine Room R/B No.1 &
Engine Room J/B No.1
B (*2)
B±G (*1)VSC
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
05±825
AVENSIS REPAIR MANUAL (RM1018E)
DTC C1350/51 PUMP MOTOR IS LOCKED/OPEN CIRCUIT
IN PUMP MOTOR GROUND
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1350/51
When any of the following 1 through 3 is detected.
1. No motor voltage supply within 0.08 sec. after actuation
starts the motor relay.
2. A high level of motor voltage when actuation does not
starts the motor relay for more than 2.5 sec.
3. The pump motor voltage is high level for a certain time
after the motor relay has elapsed.

Brake actuator pump motor

ABS motor relay circuit
WIRING DIAGRAM
0578A±02