2005 TOYOTA AVENSIS brake

C93876
21
W04200
Normal Signal Waveform
1 V / Division 2 m/s / Division GND
±
DIAGNOSTICS ABS WITH EBD SYSTEM
05±711
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±699).
OK
3CHECK HARNESS AND CONNECTOR(FRONT SPEED SENSOR ± SKID CONTROL ECU)
(a)Check for an open or short circuit in harness and connector between each front speed sensor and the
skid control ECU (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 terminal 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 BRAKE ACTUATOR ASSY (See page 32±54)
NG

BR3795OKNG
R00948
05±712
±
DIAGNOSTICS ABS WITH EBD SYSTEM
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±699).
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±699).
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.
NGCLEAN OR REPAIR SPEED SENSOR ROTOR
NOTICE:
Check the speed sensor signal last (See page 05±699).
OK
REPLACE BRAKE ACTUATOR ASSY(See page 32±54)

050XH±14
05±708
±
DIAGNOSTICS ABS WITH EBD 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 Skid Control ECU, sensor or etc., turn the ignition switc\
h to OFF.
SymptomSuspect AreaSee page
ABS does not operate
1. Check the DTC reconfirming that the normal code is output.
2. IG power source circuit
3. Speed sensor circuit
4. Check the brake actuator with a hand±held tester. If there is malfunction, check the hydraulic circuit for
leakage.
5. When the above areas (1. to 4.) are all normal but the problem still occurs, replace the skid control ECU.05±699
05±709
05±713
32±53
ABS does not operate properly
1. Check the DTC reconfirming that the normal code is output.
2. Speed sensor circuit
3. Stop light switch circuit
4. Check the brake actuator with a hand±held tester. If there is malfunction, check the hydraulic circuit for
leakage.
5. When the above areas (1. to 4.) are all normal but the problem still occurs, replace the skid control ECU.05±699
05±709
05±713
32±53
ABS warning light malfunction1. ABS warning light circuit
2. Skid control ECU05±737 ±
DTC check cannot be performed
1. ABS warning light circuit
2. Tc terminal circuit
3. When the above areas (1. and 2.) are all normal but the problem still occurs, replace the skid control ECU.05±737
05±748
Speed sensor signal check cannot be performed1. D/G terminal circuit
2. Skid control ECU±
±

050XF±14
F45089
± DIAGNOSTICSABS WITH EBD SYSTEM
05±707
AVENSIS REPAIR MANUAL (RM1018E)
TERMINALS OF ECU
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
+BM (2) ± GND (1, 4)L ± W±BAlways10 to 14
+BS (3) ± GND (1, 4)R ± W±BAlways10 to 14
FL+ (5) ± FL± (6)L±Y ± R±LIG switch ON
Slowly turn left front wheelAC generation
RL+ (7) ± RL± (17)R ± GIG switch ON
Slowly turn left rear wheelAC generation
FR+ (10) ± FR± (9)W ± BIG switch ON
Slowly turn right front wheelAC generation
D/G (11) ± GND (1, 4)W±G ± W±BIG switch ON, ABS warning light OFF8 to 12
EBDW (12) GND (1 4)PWBIG switch ON, BRAKE warning light ON5 to 9EBDW (12) ± GND (1, 4)P ± W±BIG switch ON, BRAKE warning light OFFBelow 2.0
PKB (14) GND (1 4)BW WBIG switch ON, parking brake switch ONBelow 2.0PKB (14) ± GND (1, 4)B±W ± W±BIG switch ON, parking brake switch OFF10 to 14
IG1 (18) ± GND (1, 4)R±W ± W±BIG switch ON10 to 14
RR+ (19) ± RR± (8)P ± VIG switch ON
Slowly turn right rear wheelAC generation
STP (20) GND (1 4)GW WBStop light switch ON8 to 14STP (20) ± GND (1, 4)G±W ± W±BStop light switch OFFBelow 4.0
WA (22) GND (1 4)RY WBIG switch ON, ABS warning light ON5 to 9WA (22) ± GND (1, 4)R±Y ± W±BIG switch ON, ABS warning light OFFBelow 2.0
SP1 (23) ± GND (1, 4)L±W ± W±BVehicle drive at about 20 km/h (12mph)Pulse generation
Tc (25) ± GND (1, 4)W±L ± W±BIG switch ON10 to 14

050XD±10
F45085
Combination Meter
(ABS Warning Light)
(Brake Warning Light)
DLC3Left Front Speed Sensor Brake Actuator
(Include Skid Control ECU)
Skid Control Sensor
Speed Sensor Rotor
Parking Brake Switch
Stop Lamp Switch 05±706
± DIAGNOSTICSABS WITH EBD SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
LOCATION

050XB±14
05±704
±
DIAGNOSTICS ABS WITH EBD SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DIAGNOSTIC TROUBLE CODE CHART
HINT:

Using SST 09843±18040, connect the terminal Tc and CG of the DLC3.

If malfunction is not found when inspecting parts, inspect the ECU and grou\
nd points for poor contact.

If a malfunction code is displayed during the DTC check, check the circuit\
listed for that code. For de-
tails of each code, refer to the ºSee pageº for respective ºDTC No.º\
in the DTC chart.

When 2 or more DTCs are detected, perform circuit inspection one by one unti\
l the problem is identi-
fied.
\f 

 \b\f 
C0200/31 (05±709)Right front wheel speed sensor signal malfunction
Right front speed sensor

Right front speed sensor rotor
C0205/32
(05±709)Left front wheel speed sensor signal malfunction
Left front speed sensor

Left front speed sensor rotor
C0210/33
(05±713)Right rear wheel speed sensor signal malfunction
Right rear speed sensor

Right rear speed sensor rotor
C0215/34
(05±713)Left rear wheel speed sensor signal malfunction
Left rear speed sensor

Left rear speed sensor rotor
C0226/21
(05±717)Open or short circuit in ABS actuator solenoid (SFR) circuit
SFRR or SFRH circuit
C0236/22
(05±717)Open or short circuit in ABS actuator solenoid (SFL) circuit
SFLR or SFLH circuit
C0246/23
(05±717)Open or short circuit in ABS actuator solenoid (SRR) circuit
SRRR or SRRH circuit
C0256/24
(05±717)Open or short circuit in ABS actuator solenoid (SRL) circuit
SRLR or SRLH circuit
C0273/13
(05±719)Open or short circuit in ABS motor relay circuit
ABS motor relay

ABS motor relay circuit
C0278/11
(05±722)Open or short circuit in ABS solenoid relay circuit
ABS solenoid relay

ABS solenoid relay circuit
C1237/37
(05±725)Speed sensor rotor is wrong number of teeth on one of the 4
wheels
Speed sensor

Sensor rotor

Speed sensor circuit
C1241/41
(05±726)Low battery voltage or abnormally high battery voltage

Battery

Charging system

Power source circuit
C1249/58
(05±730)Open circuit in stop light switch circuit
Stop light switch

Stop light switch circuit
C1300/62
(05±733)Malfunction in skid control ECU
Battery

Skid control ECU
C1330/35
(05±709)Open circuit in right front speed sensor
Right front speed sensor

Right front speed sensor circuit
C1331/36
(05±709)Open circuit in left front speed sensor
Left front speed sensor

Left front speed sensor circuit
C1332/38
(05±713)Open circuit in right rear speed sensor
Right rear speed sensor

Right rear speed sensor circuit
C1333/39
(05±713)Open circuit in left rear speed sensor
Left rear speed sensor

Left rear speed sensor circuit
C1350 / 51
(05±735)Pump motor is locked
Open circuit in pump motor ground
Brake actuator pump motor
Always ON
(05±737)Malfunction in ECU

Battery

Charging system

ABS warning light circuit

Power source circuit

Skid control ECU

0577T±04
F45095
ABS Warning Ligh t
BRAKE Warning
Light
C52361
Tc
CG
R01346
Norma l Code
Code 1 1 and 21
Code 11
4 sec. 0.25 sec.
2.5 sec.
1.5 sec. 0.25 sec.
2 sec.
0.5 sec . 0.5 sec.
Code 21
ON
OFF
ON
OFF
±
DIAGNOSTIC SABS WITH EBD SYSTEM
05±699
AVENSIS RE PAIR MANUAL (RM1018E)
PRE±CHECK
1. DIAGNOSI S SYSTEM
(a ) Release the parking brake leve r.
(b ) Check the warning lights.
Whe n the ignition switch is turned ON, check that the ABS
warnin g light and brake warning light come on for 3 sec.
HIN T:

Whe n the parking brake is applied or the level of the brake
flui d is lo w, the brake warning light comes on.

If the indicator check result is not normal, proceed to trou-
bleshootin g for the ABS warning light circuit ( See page
05±73 7 or 05±741 ) or brake warning light circuit ( See
pag e 05±744 ).
(c ) Without using hand±held tester:
Check the DTC.
(1 ) Usin g S S T, c onne ct te rmi na l T c a n d C G o f the
DLC3.
SS T 09843±18040
(2 ) Tur n the ignition switch ON.
(3 ) Rea d the DTC from the ABS warning light on the
combinatio n mete r.
HIN T:

If no code appears, inspect the diagnostic circuit or ABS
warning light circuit ( See page 05±737 or 05±744 ).

As an example, the blinking patterns for normal code and
code s 1 1 and 21 are shown on the left.
(4 ) Codes are explained in the code table on page
05±704.
If 2 or more DTCs are detected at the same time, the lowest
numbered DTC is displayed 1st. (5) After completing the check, remove the SST fromthe DLC3.
SST 09843±18040
(d) With using hand±held tester: Check the DTC.
(1) Read the DTC by following the prompts on the tes-ter screen.
HINT:
Please refer to the hand±held tester operator's manual for fur-
ther details.
(e) Without using hand±held tester: Clear the DTCs.
(1) Using SST, connect the terminal Tc and CG of theDLC3.
SST 09843±18040
(2) Turn the ignition switch ON.

BR3890
05±700
± DIAGNOSTICSABS WITH EBD SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
(3) Clear the DTCs stored in ECU by depressing the
brake pedal 8 or more times within 5 sec.
(4) Check that the ABS warning light indicates the nor-
mal code blinking pattern.
(5) Remove the SST from the DLC3.
SST 09843±18040
HINT:
Disconnecting the battery cable during repairs will not erase the
DTCs in the ECU.
(f) With using hand±held tester:
Clear the DTCs.
(1) Turn the ignition switch ON.
(2) Operate the hand±held tester to erase the codes.
HINT:
Please refer to the hand±held tester operator's manual for fur-
ther details.
2. DATA LIST
HINT:
According to the DATA LIST displayed on the Hand±held tester, you can read the value and status of the
switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as a first step of trouble-
shooting is one of the methods to shorten the labor time.
(a) Connect the Hand±held tester to the DLC3.
(b) Turn the ignition switch ON.
(c) From the display on the tester, read the ºDATA LISTº.
ItemMeasurement Item /
Range (Display)Normal ConditionDiagnostic Note
ABS MOT RELAYABS motor relay / ON or
OFFON : Motor relay ON±
SOL RELAYSolenoid relay / ON or
OFFON : Solenoid relay ON±
STOP LIGHT SWStop light switch / ON or
OFF
ON : Brake pedal de-
pressed
OFF : Brake pedal re-
leased
±
PKB SWParking brake switch / ON
or OFFON : Parking brake applied
OFF : Parking brake re-
leased
±
ABS OPERT FRABS operation (FR) / BE-
FORE or OPERATE
BEFORE : No ABS opera-
tion (FR)
OPERATE : During ABS
operation (FR)
±
ABS OPERT FLABS operation (FL) / BE-
FORE or OPERATE
BEFORE : No ABS opera-
tion (FL)
OPERATE : During ABS
operation (FL)
±
ABS OPERT RRABS operation (RR) / BE-
FORE or OPERATE
BEFORE : No ABS opera-
tion (RR)
OPERATE : During ABS
operation (RR)
Speed indicated on
speedometer
ABS OPERT RLABS operation (RL) / BE-
FORE or OPERATE
BEFORE : No ABS opera-
tion (RL)
OPERATE : During ABS
operation (RL)
Speed indicated on
speedometer