2005 TOYOTA AVENSIS steering wheel

BR3893
Malfunction Code (Example Code 72 76)
ON
OFF
0.5 sec. 0.5 sec.1.5 sec.
0.5 sec.2.5 sec.
0.5 sec. 72 7 6
4 sec.
Repeat 05±764
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)

If 2 or more DTCs are detected at the same time, the low-
est numbered code is displayed first.
(f) After the check, disconnect the SST from terminal Ts and
CG, Tc and CG of DLC3 and turn the ignition switch to
OFF.
SST 09843±19040
6. With using hand±held tester:
ABS SENSOR SIGNAL CHECK (TEST MODE)
NOTICE:
After replacing the steering angle sensor and/or ECU, perform zero point calibration of the steering
angle sensor or system decision (When replacing the ECU) (See step 7.).
HINT:
If the ignition switch is turned from ON to ACC or LOCK during test mode, the DTCs will be erased.
(a) Hook up the hand±held tester to the DLC3.
(b) Perform step 5. (c) to (d) on the previous page.
(c) Read the DTC by following the prompts on the tester screen.
HINT:
Please refer to the hand±held tester operator's manual for further details.
7. STEERING ANGLE SENSOR ZERO POINT CALIBRATION
NOTICE:
When replacing the steering angle sensor with column assembly or ECU, Engine and ECT ECU (A/T),
Engine ECU (M/T) or when adjusting the front wheel alignment or steering wheel center point in ac-
cordance with the removing or installing or replacing the suspension, axle or steering parts, make
sure to perform steering angle sensor zero point calibration.
(a) Using SST, connect terminals Ts and CG of the DLC3
.
SST 09843±18040
(b) Turn the ignition switch ON and keep the shift lever at P range.
(c) Make sure the steering off center angle is less than 3
when assembling the steering wheels (Smaller
value is desirable).
(d) Press the TRC OFF switch and hold it.
(e) Check that the following conditions are satisfied.
HINT:

Engine warning light comes on.

ABS warning light is blinking.
(f) Depress the brake pedal 3 times or more within 2 seconds.

Inspector 's
Name:
Customer 's Name
Date Vehicle
Brought InOdometer Reading/ /
/ /
Date Problem First Occurred
Frequency Problem Occurs/ /
ContinuousIntermittent ( times a day)
TRAC does not operate. (Wheels spin when starting rapidly.)
DisplaysDoes not Display
DTC Check1st Time
2nd TimeNormal Code
Malfunction Code (Code )
Normal CodeMalfunction Code (Code )
Symptomskm
miles
Light TRC OFF Indicator
Light SLIP Indicator
Remains ONDoes not Light Up
Check Item
NormalMalfunction Code (Code )
NormalMalfunction Code (Code )
ABS Warning Light
Malfunction
Indicator Light TRC & VSC Check Sheet
Remains ONDoes not Light Up
VSC does not operate. (Wheels sideslip at the time of sharp turning.)
VSC Warning
Indicator
Skid Control
BuzzerDoes not SoundSounds
VSC/TRC OFF SW
SYSTEM
Freeze Frame Data
SHIFT POSITION
YAW RATON
OFF
VSC/TRC
P, NR
D
deg/s
VFAIL
23
4L
MAS CYL PRESS
THROTTLE
MAS PRESS GRADE
G (RIGHT&LEFT)
G (BACK&FORTH)
STEERING ANG
deg
deg
MPa/s
G
G VIN
Licence No.Production Date
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
05±755
AVENSIS REPAIR MANUAL (RM1018E)

05±804
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC 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.
1READ VALUE OF STEERING SENSOR
(a)Select the DATALIST mode on the hand±held tester.
(b)Check that the steering wheel turning angle value of the steering angle position sensor displayed on the hand±held tester is changing when turning the steering wheel.
OK:
Steering wheel turning angle value is changing.
OKGo to step 4
NG
2CHECK INSTALLATION CONDITION OF STEERING ANGLE SENSOR
NGREPLACE STEERING SENSOR(See page 32±65)
OK
3 CHECK HARNESS AND CONNECTOR(STEERING SENSOR CIRCUIT ± SKID CONTROL ECU)
(a) Check for an open or short circuit in harness and connector between each term\
inal SS1, SS2, YIGA
and YGND of the skid control ECU and steering angle sensor (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
4CALIBRATE STEERING ANGLE SENSOR(See page 05±756)
NG REPLACE STEERING SENSOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY(See page 32±57)

0542S±04
C94401
05±770
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
TERMINALS OF ECU
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
WT (2) GND (6 10)LG B W BIG Switch ON, TRAC OFF Light ONBelow 2.0WT (2) ± GND (6, 10)LG±B ± W±BIG Switch ON, TRAC OFF Light OFF10 to 14
IND (4) GND (6 10)LG W BIG Switch ON, SLIP indicator light ONBelow 2.0IND (4) ± GND (6, 10)LG ± W±BIG Switch ON, SLIP indicator light OFF10 to 14
+BS (5) ± GND (6, 10)R ± W±BAlways10 to 14
ENG+ (8) ± ENG± (7)Y ± BIG switch ONPulse generation
+BM (9) ± GND (6, 10)L ± W±BAlways10 to 14
PMC (11) ± E2 (12)GR ± Y±RIG switch ON, stop light switch OFF0.3 to 0.9
SS1 (13) ± SS2 (29)W ± BEngine idling, slowly tun steering wheelPulse generation
IG1 (14) ± GND (6, 10)R±W ± W±BIG switch ON10 to 14
BZ (15) GND (6 10)BY WBIG switch ON, VSC buzzer is soundedBelow 1.0 10 to 14BZ (15) ± GND (6, 10)B±Y ± W±BIG switch ON, VSC buzzer is not sounded10 to 14
Tc (17) ± GND (6, 10)W±L ± W±BIG Switch ON10 to 14
TRC+ (18) ± TRC± (19)G ± LIG switch ONPulse generation
EBDW (20) GND (6 10)PWBIG Switch ON, Brake warning light ON5 to 9EBDW (20) ± GND (6, 10)P ± W±BIG Switch ON, Brake warning light OFFBelow 2.0
FR+ (21) ± FR± (22)W ± BIG switch ON, slowly turn right front wheelAC generation
RL+ (23) ± RL± (40)R ± GIG switch ON, slowly turn left rear wheelAC generation
D/G (26) ± GND (6, 10)W±G ± W±BIG switch ON8 to 12
VCM (27) ± GND (6, 10)Y±G ± W±BIG switch ON4.5 to 5.5
Ts (28) ± GND (6, 10)W ± W±BIG switch ON10 to 14
YIGA (30) ± YGND (16)W±L ± W±GIG Switch ON10 to 14
PKB (31) GND (6 10)BW WBIG switch ON, parking brake switch ONBelow 1.5PKB (31) ± GND (6, 10)B±W ± W±BIG switch ON, parking brake switch OFF10 to 14
NEO (32) ± GND (6, 10)Y±B ± W±BEngine idlingPulse generation
VSCW (34) GND (6 10)WR WBIG Switch ON, VSC warning light ON5 to 9VSCW (34) ± GND (6, 10)W±R ± W±BIG Switch ON, VSC warning light OFFBelow 2.0
SP1 (35) ± GND (6, 10)L±W ± W±BVehicle drives at about 20 km/h (12 mph)Pulse generation
WA (36) GND (6 10)RY WBIG Switch ON, ABS warning light ONBelow 2.0WA (36) ± GND (6, 10)R±Y ± W±BIG Switch ON, ABS warning light OFF10 to 14
STP (37) GND (6 10)GW WBStop light switch OFFBelow 1.5STP (37) ± GND (6, 10)G±W ± W±BStop light switch ON8 to 14
RR+ (38) ± RR± (39)P ± VIG switch ON, slowly turn right rear wheelAC generation
FL+ (41) ± FL± (24)L±Y ± R±LIG switch ON, slowly turn left front wheelAC generation

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)

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)

050WP±04
05±1058
±
DIAGNOSTICS ELECTRONIC MOTOR POWER STEERING 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.
SymptomSuspected AreaSee page
At the time of idling, steering control force is great.
1. Check the DTC reconfirming that the normal code is output.
2. IG Power source circuit
3. Front tire (Worn or improperly inflated)
4. Front wheel alignment (Incorrect)
5. Steering column assy
6. Power steering ECU assy05±1045
05±1073 28±1
26±6
50±9
01±32
Even if the vehicle speed is increased, appropriate steering resis-
tance cannot be felt.
1. Check the DTC reconfirming that the normal code is output.
2. Combination meter assy
3. Steering column assy
4. Power steering ECU assy05±1045
71±2150±9
01±32
P/S warning light faulty.1. P/S warning light circuit
2. Power steering ECU assy05±1082
01±32
DTC check cannot be done.
1. P/S warning light circuit
2. Tc terminal circuit
3. Power steering ECU assy05±1082
05±108401±32
Input signal check cannot be done.
1. Ts terminal circuit
2. Power steering ECU assy
3. Combination meter assy05±108601±32
71±21
Unusual noise.
1. Steering column assy
2. Power steering ECU assy
3. Steering gear assy50±9
01±32
51±28