MOTOR TOYOTA AVENSIS 2005 Service Service Manual

C94397
GND
+BM
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
05±785
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

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

D30688
ECM
MPX2
MPX1 29
18 E10 11
B8
22 SNOWI14
Integration Relay
8
Driver Side J/B14
DA B E8
ECT Pattern Select SW
*1: RHD
*2: LHD 4 1 W±B
CH
CF
CA 8
11
6
W±B
IPE10 MPX1
MPX2
*1
*2
B8
(*3) Pattern Select Switch (ECT SNOW Switch)
When the ECT SNOW switch is pushed, the switch contact is made and the ECT SNOW mode is selected.
To cancel the ECT SNOW mode, push the ECT SNOW switch once again. The ECT SNOW mode is automatical-
ly cancelledout when the ignition switch is turned ºOFFº.
*3
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))05±977
AVENSIS REPAIR MANUAL (RM1018E)
PATTERN SELECT SWITCH CIRCUIT
CIRCUIT DESCRIPTION
ECT SNOW is the system that operates the throttle motor to control engine output to reduce skidding of the
driving wheels, guarantee takeoff acceleration, driving straightness and turning stability.
WIRING DIAGRAM
05C9L±01

F40038
Power Steering ECU Assy
Power Steering MotorM1
M2 1
2 05±1064
± DIAGNOSTICSELECTRONIC MOTOR POWER STEERING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC C1523/23 Motor Circuit Malfunction
DTC C1524/24 Motor Circuit Malfunction
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1523/23Short circuit of motor terminal or abnormal voltage or current in
Steering column assy
C1524/24
Short circuit of motor terminal or abnormal voltage or current in
motor circuit.
Steering column assy

Power steering ECU assy
WIRING DIAGRAM
050WR±04

F44304
M2
M1
Connector A
F44858
M1
M2
±
DIAGNOSTICS ELECTRONIC MOTOR POWER STEERING SYSTEM
05±1065
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
NOTICE:
When performing the inspection of power steering ECU, ECU must be instal\
led to the vehicle or fully
fixed.
1INSPECT POWER STEERING ECU ASSY
(a)Turn the ignition switch ON.
(b)Turn the steering wheel to the left and right and measure
the voltage between terminals M1 and M2 of power steer-
ing ECU assy connector.
Standard:
Voltage changes when steering wheel is turned.
NGREPLACE POWER STEERING ECU ASSY(See page 50±20)
OK
2INSPECT STEERING COLUMN ASSY(POWER STEERING MOTOR)
(a)Disconnect the connector from the power steering motor.
(b)Measure the resistance between terminals M1 and M2 of power steering motor connector.
Standard:
Resistance: 0.07 to 1

NGREPLACE STEERING COLUMN ASSY (See page 50±9)
OK
REPLACE POWER STEERING ECU ASSY(See page 50±20)

±
DIAGNOSTICS ELECTRONIC MOTOR POWER STEERING SYSTEM
05±1063
AVENSIS REPAIR MANUAL (RM1018E)
DTCC1516/16Calibration of Sensor Zero Point Not
Completed
CIRCUIT DESCRIPTION
This DTC does not indicate trouble. This is detected when the torque sensor \
zero point calibration is not
completed normally.
DTC No.DTC Detecting ConditionTrouble Area
C1516/16The torque sensor zero point calibration is not completed
normally.Sensor zero point calibration failure.
INSPECTION PROCEDURE
1CLEAR DTC(See page 05±1045)
2PERFORM CALIBRATION OF TORQUE SENSOR ZERO POINT(See page 05±1045)
3 RECONFIRM DTC
(a)Check the DTCs (See page 05±1045).
(A): DTC C1516/16 output after attempted 3 time or more.
(B): Normal code output.
HINT:
If the DTC code is output in spite of conducting the steering zero point c\
alibration, replace the steering col-
umn assy.
(A) REPLACE STEERING COLUMN ASSY
(B)
END
0579K±02

05±1062
±
DIAGNOSTICS ELECTRONIC MOTOR POWER STEERING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTCC1515/15Torque Sensor Zero Point Calbration Not Performed
CIRCUIT DESCRIPTION
This DTC does not indicate trouble. Perform calibration of torque sensor zer\
o point to delete DTC.
DTC No.DTC Detecting ConditionTrouble Area
C1515/15When torque sensor zero point calibration is not performed,
this DTC is detected.Sensor zero point calibration is not performed.
INSPECTION PROCEDURE
1RECONFIRM DTC
(a)Check the DTCs (See page 05±1045).
(b) Is DTC excepted for C1515/15 outputed?
YES REPAIR CIRCUIT INDICATED BY OUTPUTCODE
NO
2PERFORM CALIBRATION OF TORQUE SENSOR ZERO POINT(See page 05±1045)
3 RECONFIRM DTC
(a)Check the DTC (See page 05±1045).
(b) Is DTC C1516/16 outputed? NO END
YES
REPAIR CIRCUIT INDICATED BY DTC C1516/16(See page 05±1063)
050YA±04

F44868
Power Steering ECU Assy Torque Sensor
TRQV
TRQ1
TRQ2
TRQG 6
5
7
8
± DIAGNOSTICSELECTRONIC MOTOR POWER STEERING SYSTEM
05±1059
AVENSIS REPAIR MANUAL (RM1018E)
DTC C1511/11 Torque Sensor Circuit Malfunction
DTC C1512/12 Torque Sensor Circuit Malfunction
DTC C1513/13 Torque Sensor Circuit Malfunction
DTC C1514/14 Torque Sensor Power Source Circuit
Malfunction
DTC C1517/17 Torque Sensor Hold Malfunction
CIRCUIT DESCRIPTION
The torque sensor converts the power input in the steering wheel into electric signals, and sends them to
the ECU.
DTC No.DTC Detecting ConditionTrouble Area
C1511/11
C1512/12Torque sensor circuit malfunction
C1513/13
q
Steering column assy

Power steering ECU assy
C1514/14Torque sensor power source circuit malfunction

Power steering ECU assy
C1517/17Torque sensor hold malfunction
WIRING DIAGRAM
05C5H±01

05±1060
±
DIAGNOSTICS ELECTRONIC MOTOR POWER STEERING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
NOTICE:
When performing the inspection of power steering ECU, ECU must be instal\
led to the vehicle or fully
fixed.
HINT:
Start the inspection from the step 1 with using hand±held tester. Start from step 2 without using hand±held
tester.
1READ VALUE OF HAND±HELD TESTER
(a)Connect the hand±held tester to the DLC3.
(b)Turn the ignition switch to ON and push the hand±held tester main swit\
ch ON.
(c)Select the item ºTRQ1º and ºTRQ2º in the DATA LIST and read its value displayed on the hand±held tester.
(d)Check the values on the ºTRQ1º and ºTRQ2º of the data monito\
r with the steering wheel being in the center value position (no load).
Standard:
2.3 to 2.7 V
(e)Check the difference of the values between ºTRQ1º and ºTRQ2º with the steering wheel being in the center value position (no load).
Standard:
Voltage: 0.3 V or less
(f)Check the values of the torque sensor on the data monitor when turning s\
teering wheel. (1)Turn the steering wheel to the right end from the center value position, and check the values on\
the ºTRQ1º and ºTRQ2º of the data monitor.
Standard:
2.5 to 4.7 V
(2)Turn the steering wheel to the left end from the center value position, and \
check the values on the ºTRQ1º and ºTRQ2º of the data monitor.
Standard:
0.3 to 2.5 V
(3)Check the difference of the values between ºTRQ1º and ºTRQ2º.
Standard:
Voltage: 0.3 V or less
NGGo to step 3
OK
REPLACE POWER STEERING ECU ASSY (See page 50±20)

F44304
TRQG (±)TRQ1 (+)Connector BTRQ2 (+)
F44304
TRQG (±) TRQV (+)
Connector B
±
DIAGNOSTICS ELECTRONIC MOTOR POWER STEERING SYSTEM
05±1061
AVENSIS REPAIR MANUAL (RM1018E)
2INSPECT STEERING COLUMN ASSY(TORQUE SENSOR)
(a)Measure the voltage between terminals TRQ1 and
TRQG, TRQ2 and TRQG of power steering ECU assy
connector.
Standard:
Steering positionTRQ1TRQ2
Center position2.3 to 2.7 V2.3 to 2.7 V
Right turned2.5 to 4.7 V2.5 to 4.7 V
Left turned0.3 to 2.5 V0.3 to 2.5 V
OKREPLACE POWER STEERING ECU ASSY (See page 50±20)
NG
3INSPECT POWER STEERING ECU ASSY
(a)Measure the voltage between terminals TRQV and TRQG of power steering ECU assy connector.
Standard:
7.5 to 8.5 V
OKREPLACE STEERING COLUMN ASSY (See page 50±9)
NG
REPLACE POWER STEERING ECU ASSY (See page 50±20)