ABS TOYOTA AVENSIS 2005 Service Service Manual

±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
05±603
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0191FUEL RAIL PRESSURE SENSOR CIRCUIT
RANGE/PERFORMANCE
CIRCUIT DESCRIPTION
Refer to DTCs P0087 on page 05±557.
INSPECTION PROCEDURE
HINT:

If DTCs ºP0087, P0190, P0192,and P0193º are output simultaneously, manifold absolute pressure
sensor circuit may be open or short. Perform the troubleshooting of DTC ºP0087, P0190, P019\
2,and
P0193º first.

Read freeze frame data using the hand±held tester. Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, it is useful for deter\
mining whether the vehicle
was running or stopped, the engine was warmed up or not, etc. at the time o\
f the malfunction.
DTC No.DTC Detection ConditionTrouble Area
P0191Voltage output of the fuel pressure sensor for the common rail
is out of the standard range. (1 trip detection logic)
Fuel pressure sensor
1CHECK OTHER DTC OUTPUT(BESIDS DTC P0191)
(a)Read the DTC using the hand±held tester.
Result:
Display (DTC output)Proceed to
Only P0191 is outputA
P0191 and other DTCs are outputB
HINT:
If any other codes besides P0191 are output, perform the troubleshoot for \
those DTCs first.
BGO TO RELEVANT DTC CHART(See page 05±544)
A
REPLACE COMMON RAIL ASSY (FUEL PRESSURE SENSOR) (See page 11±78)
05CPQ±01

05±726
± DIAGNOSTICSABS WITH EBD SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC C1241/41 LOW BATTERY POSITIVE VOLTAGE OR
ABNORMALLY HIGH BATTERY POSITIVE
VOLTAGE
CIRCUIT DESCRIPTION
This is the power source of the ECU, hence the actuators.
DTC No.DTC Detecting ConditionTrouble Area
C1241/41
With vehicle speed to about 6 km/h (4 mph), battery voltage
is less than 9.4 V at the time of non±operation of ABS
control or less than 9.2 V at the time of operation of ABS
control, or battery voltage is more than 16.9 V.
Battery

Charging system

Power source circuit
050XX±09

F45133
1 2 33ALT Engine Room R/B No.3
B (*2) W (*2) B±G (*1)
ALT 1
4D 1
1
4B Engine Room J/B No.4 ED1
BatteryFL MAIN
*1: Gasoline
*2: 1CD±FTV
*3: LHD
*4: RHD B±G (*1)
B±L (*2)
1
5918
1 53
2
1
DH DA DB DN
DH
AM1 ECU±IG IG Relay
W±BS21
GND1 GND2
S24
W±BW±B
EA W±B
IJ B (*2) B±G (*1)G±Y R±W
W±B
G±R G±Y G±YR±W R±W
R±W J/C
J10 J20 J10 J20 S2 IG1GC GC 1822
IE1Skid Control ECU
with Actuator
(*3) (*4) (*3) (*4)
I13
Ignition SW
1 3
B±L (*2)
Driver Side J/B
± DIAGNOSTICSABS WITH EBD SYSTEM
05±727
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM

F45090
Driver Side J/BECU±IG
F45088GNDGNDIG1
05±728
±
DIAGNOSTICS ABS WITH EBD SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1INSPECT FUSE(ECU±IG FUSE)
(a)Remove the ECU±IG fuse from the driver side J/B.
(b)Check continuity of the ECU±IG fuse. OK:
Continuity
NGINSPECT FOR SHORT CIRCUIT IN ALL HARNESS AND COMPONENTS CONNECTED
TO ECU±IG FUSE
OK
2INSPECT BATTERY
OK:
Voltage: 10 to 14 V NGINSPECT CHARGING SYSTEM
OK
3INSPECT SKID CONTROL ECU CONNECTOR(IG1 TERMINAL VOLTAGE)
IN CASE OF USING HAND±HELD TESTER:
(a)Check the voltage condition, which is output from the ECU and displayed \
on the hand±held tester. OK:
ºNormalº is displayed. IN CASE OF NOT USING HAND±HELD TESTER:
(a)Disconnect the skid control ECU connector.
(b)Turn the ignition switch ON.
(c)Measure the voltage between terminals IG1and GND ofthe skid control ECU harness side connector.
OK:
Voltage: 10 to 14 V
OKREPLACE BRAKE ACTUATOR ASSY (See page 32±54)
NG

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