TOYOTA AVENSIS 2005 Service Repair Manual

F45088GNDGND
±
DIAGNOSTICS ABS WITH EBD SYSTEM
05±729
AVENSIS REPAIR MANUAL (RM1018E)
4INSPECT SKID CONTROL ECU CONNECTOR(GND TERMINAL CONTINUITY)
(a)Measure resistance between terminal GND of the skid
control ECU harness side connector and body ground.
(b) OK:
Resistance: 1
or less
NGREPAIR OR REPLACE HARNESS OR CONNECTOR(GND TERMINAL ± BODY
GROUND) (See page 01±32)
OK
CHECK AND REPAIR HARNESS AND CONNECTOR(BATTERY ± IG1 TERMINAL)
(See page 01±32)

±
DIAGNOSTICS ABS WITH EBD SYSTEM
05±725
AVENSIS REPAIR MANUAL (RM1018E)
DTCC1237/37SPEED SENSOR ROTOR FAULTY
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1237/37
Detection of any of conditions from 1 through 4:
1.Wheel speed deviation of unspecified wheel.
2.Wheel sensor signal failure suspicion.
3.Continuous ABS control for 60 sec. or more.

Speed sensor

Sensorrotor
INSPECTION PROCEDURE
1INSPECT TIRE SIZE
NGREPLACE TIRES SO THAT ALL 4 TIRES ARE
SAME IN SIZE
OK
2INSPECT SPEED SENSOR ROTOR
NGREPLACE SENSOR ROTOR
OK
3INSPECT SPEED SENSOR
NGREPLACE SPEED SENSOR
OK
4CHECK HARNESS AND CONNECTOR(SPEED SENSOR ± SKID CONTROL ECU)
(a)Check for an open or short circuit in harness and connector between each term\
inal of speed sensor and the skid control ECU (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
REPLACE BRAKE ACTUATOR ASSY(See page 32±54)
0577V±04

F45132
Battery FL MAINSkid Control ECU
with Actuator
B±G (*1) R (*1)
1 ALT ABS Engine Room R/B No.4 & Engine Room J/B No.4
1
4B
W±BS2
S21 3
+BS
12
1 2
GND1 GND2
S24
W±BW±B
*1: Gasoline
*2: 1CD±FTVEA4
R (*2)
W (*2)
2 12 33 11B1ABS ALT Engine Room R/B No.3Engine Room R/B No.1 &
Engine Room J/B No.1
B (*2)
B±G (*1) 05±722
± DIAGNOSTICSABS WITH EBD SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC C0278/11 OPEN OR SHORT CIRCUT IN ABS
SOLENOID RELAY
CIRCUIT DESCRIPTION
This relay supplies power to each ABS solenoid. After the ignition switch is turned ON, if the initial check is
OK, the relay goes on.
DTC No.DTC Detecting ConditionTrouble Area
C0278/11
Detection of any conditions from 1 to 3:
1. Internal circuit malfunction in ECU.
2. Valve relay voltage is 0.8 x IG or less for 0.5 sec.
3. Valve relay voltage is high level at valve relay OFF.

ABS solenoid relay

ABS solenoid relay circuit
WIRING DIAGRAM
056SS±06

F45088GNDGND
+BS
F45087
Engine Room R/B No.4
Engine Room R/B No.1 Diesel Engine:Gasoline Engine:
ABS (25 A)
ABS (25 A)
± DIAGNOSTICSABS WITH EBD SYSTEM
05±723
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1 INSPECT SKID CONTROL ECU CONNECTOR(+BS TERMINAL VOLTAGE)
(a) Disconnect the skid control ECU connector.
(b) Measure the voltage between terminals +BS and GND of
the skid control ECU harness side connector.
OK:
Voltage: 10 to 14 V
OK IF THE SAME CODE IS STILL OUTPUT AFTER
THE DTC IS DELETED, CHECK THE CONTACT
CONDITION OF EACH CONNECTION
NG
2 INSPECT FUSE(ABS FUSE)
(a) Remove the ABS (25 A) fuse from the engine room R/B
No.4 (Gasoline engine) or engine room R/B No.1 (Diesel
engine).
(b) Check continuity of the ABS fuse.
OK:
Continuity
NG CHECK FOR SHORT IN ALL HARNESS AND
COMPONENTS CONNECTED FUSE
OK

F45088GNDGND
05±724
±
DIAGNOSTICS ABS WITH EBD SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
3INSPECT SKID CONTROL ECU CONNECTOR(GND TERMINAL CONTINUITY)
(a)Measure resistance between terminal GND of the skid control ECU harness side connector and body ground.
OK:
Resistance: 1
or less
NGCHECK AND REPAIR HARNESS AND CONNECTOR(GND TERMINAL ± BODY
GROUND) (See page 01±32)
OK
CHECK AND REPAIR HARNESS AND CONNECTOR(BATTERY ± +BS TERMINAL)
(See page 01±32)

F45132
Battery FL MAINSkid Control ECU
with Actuator
B±G (*1) L (*1)
1 ALT ABS Engine Room R/B No.4 & Engine Room J/B No.4
1
4B
W±BS2
S21 2
+BM
12
1 2
GND1 GND2
S24
W±BW±B
*1: Gasoline
*2: 1CD±FTVEA4
L (*2)
W (*2)
2 12 33 11B1ABS ALT Engine Room R/B No.3Engine Room R/B No.1 &
Engine Room J/B No.1
B (*2)
B±G (*1)
± DIAGNOSTICSABS WITH EBD SYSTEM
05±719
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 is activated, 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. Pump motor voltage is 2.0 V or more for 1 sec. or more
at motor relay OFF.
2. Pump motor voltage is (IG ± 4.0 V) or less for 0.1 sec. or
more at motor relay ON.
3. After the end of the actuation of the motor relay slow
down condition of motor does not meet the specification.

ABS motor relay

ABS motor relay circuit
WIRING DIAGRAM
056ST±06

F45088GNDGND
+BM
05±720
± DIAGNOSTICSABS WITH EBD SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
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 PERFORM ACTIVE TEST BY HAND±HELD TESTER(ABS MOTOR RELAY)
(a) Check the operation sound of the ABS motor individually when operating it with the hand±held tester.
OK:
The operation sound of the ABS motor is heard.
OK IF THE SAME CODE IS STILL OUTPUT AFTER
THE DTC IS DELETED, CHECK THE CONTACT
CONDITION OF EACH CONNECTION
NG
2 INSPECT SKID CONTROL ECU CONNECTOR(+BM TERMINAL VOLTAGE)
(a) Disconnect the skid control ECU connector.
(b) Measure the voltage between terminals +BM and GND of
the skid control ECU harness side connector.
OK:
Voltage: 10 to 14 V
OK IF THE SAME CODE IS STILL OUTPUT AFTER
THE DTC IS DELETED, CHECK THE CONTACT
CONDITION OF EACH CONNECTION
NG

F45087
Engine Room R/B No.4
Engine Room R/B No.1
Diesel Engine: Gasoline Engine:ABS (40 A)
ABS (40 A)
F45088GNDGND
±
DIAGNOSTICS ABS WITH EBD SYSTEM
05±721
AVENSIS REPAIR MANUAL (RM1018E)
3INSPECT FUSE(ABS FUSE)
(a)Remove the ABS (40 A) fuse from the engine room R/B
No.4 (Gasoline engine) or engine room R/B No.1 (Diesel
engine).
(b)Check continuity of the ABS fuse. OK:
Continuity
NGCHECK FOR SHORT IN ALL HARNESS AND COMPONENTS CONNECTED FUSE
OK
4INSPECT SKID CONTROL ECU CONNECTOR(GND TERMINAL CONTINUITY)
(a)Measure resistance between terminal GND of the skid control ECU harness side connector and body ground.
OK:
Resistance: 1
or less
NGCHECK AND REPAIR HARNESS AND CONNECTOR(GND TERMINAL ± BODY
GROUND)(See page 01±32)
OK
CHECK AND REPLACE HARNESS AND CONNECTOR(BATTERY ± +BM TERMINAL)
(See page 01±32)

F45132
Battery FL MAINSkid Control ECU
with Actuator
B±G (*1) R (*1)
1 ALT ABS Engine Room R/B No.4 & Engine Room J/B No.4
1
4B
W±BS2
S21 3
+BS
12
1 2
GND1 GND2
S24
W±BW±B
*1: Gasoline
*2: 1CD±FTVEA4
R (*2)
W (*2)
2 12 33 11B1ABS ALT Engine Room R/B No.3Engine Room R/B No.1 &
Engine Room J/B No.1
B (*2)
B±G (*1)
± DIAGNOSTICSABS WITH EBD SYSTEM
05±717
AVENSIS REPAIR MANUAL (RM1018E)
DTC C0226/21 SFR SOLENOID CIRCUIT
DTC C0236/22 SFL SOLENOID CIRCUIT
DTC C0246/23 SRR SOLENOID CIRCUIT
DTC C0256/24 SRL SOLENOID CIRCUIT
CIRCUIT DESCRIPTION
This solenoid goes on when receiving signals from the ECU and controls the pressure acting on the wheel
cylinders to control the braking force.
DTC No.DTC Detecting ConditionTrouble Area
C0226/21
C0236/22
C0246/23
C0256/24
Solenoid valve signal does not match to the check result.
Each solenoid circuit
WIRING DIAGRAM
050XQ±12

05±718
±
DIAGNOSTICS ABS WITH EBD SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1RECONFIRM DTC
(a)Check if other DTCs are detected (See page 05±699). YES REPAIR CIRCUIT INDICATED BY OUTPUTCODE
NO
REPLACE BRAKE ACTUATOR ASSY(See page 32±54)