Page 857 of 5135
F45143
SS2
SS1
YGND
YIGA S1 S1 S1 S1 29
13
16
30
IO112 11
W±G
W±L IO1 W±G
W±L J/C
W±G
W±L
W±G
W±L GND
CANL
CANHUBAT
GND
CAN
HIGH12V CAN
LOWB
W (Shielded)
(Shielded)
B
W
(Shielded)
B
W
W±B1
75
6 4 2 1
3C
B C
B A
J15
J/C
IK B13
12
11
J22 IO2
Y1
YAW Rate Sensor
S12
Steering Sensor RHD:
AJ/C J19
J/C
(Shielded)
B
W
J23
J22
J22
J22 J23 IO2 IO2
C F
C
B
B C
FBSkid Control ECU
with Actuator
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
05±803
AVENSIS REPAIR MANUAL (RM1018E)
Page 858 of 5135
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)
Page 859 of 5135
F45139
Skid Control ECU
with Actuator
S118
*1: LHD
*2: RHDG
TRC+ E925
IE86
IE213
(*1) (*2) ECM
E9 31
E9 24
E9 30 TRC±
ENG+
ENG±
*3: RHD 1AZ±FSE
*4: Except RHD 1AZ±FSEIE813
IE23
(*1) (*2)
IE87
IE215
(*1) (*2)
IE814
IE214
(*1) (*2) L
W (*3)
Y (*4)
BG
L
Y
BS1
S1
S17 8 19TRC+
TRC±
ENG+
ENG±
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
05±799
AVENSIS REPAIR MANUAL (RM1018E)
DTC C1203/59 ECM COMMUNICATOIN CIRCUIT
MALFUNCTION
CIRCUIT DESCRIPTION
This circuit is used to transmit TRC & VSC control information from the skid control ECU to the ECM (TRC+,
TRC±), and engine control information from the ECM to the skid control ECU (ENG+, ENG±).
DTC No.DTC Detecting ConditionTrouble Area
C1203/59
When any of the following 1 through 3 is detected :
1. IG1 voltage is 8.5 V or more, and the condition that data
can not be sent to ECM continues for 1.2 seconds or
more.
2. IG1 voltage is 8.5 V or more, engine speed is 500 r.p.m
or more, vehicle speed is 60 km/h (38 mph) or more,
and the condition that data can not be received from
ECM continues for 1.2 seconds or more.
3. The condition that data can not be transmitted between
the skid control ECU and ECM occurs at least once
within 5 seconds continues 10 consecutive times within
60 sec.
TRC+ or TRC± circuit
ENG+ or ENG± circuit
ECM
WIRING DIAGRAM
0542Z±04
Page 860 of 5135
05±800
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1CHECK HARNESS AND CONNECTOR(ECM ± SKID CONTROL ECU)
(a)Check for an open or short circuit in harness and connector between each of t\
erminals ENG+, ENG±, TRC+, TRC± of the skid control ECU and the same one of the ECM (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
2 CHECK OPERATION OF MALFUNCTION INDICATOR
(a) Check the MIL. (1) The MIL comes on when the ignition switch is turned ON and the engine is\
not running.
NG CHECK AND REPLACE ECM
OK
CHECK AND REPLACE ABS & TRACTION ACTUATOR ASSY(See page 32±57)
Page 861 of 5135
F45138
Skid Control ECU
with ActuatorNEO
S1 32
Y±B
*1: LHD
*2: RHD Y±B
NEOE9 17
IE85
IE113
(*1)(*2)
ECM
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
05±797
AVENSIS REPAIR MANUAL (RM1018E)
DTCC1204/44NE SIGNAL CIRCUIT
CIRCUIT DESCRIPTION
The skid control ECU receives engine revolution speed signals (NE signals)\
from the ECM.
DTC No.DTC Detecting ConditionTrouble Area
C1202/44
At vehicle speed of 30 km/h (19 mph) or more, when data
received from the ECM is in normal condition, engine revo-
lution signal > 0 rpm continues for 5 seconds or more.NEO circuit
ECM
Skid control ECU
WIRING DIAGRAM
INSPECTION PROCEDURE
1CHECK HARNESS AND CONNECTOR(SKID CONTROL ECU ± ECM)
(a)Check for an open or short circuit in harness and connector between terminal \
NEO of the skid control
ECU and ECM (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
05432±04
Page 862 of 5135
F45092
Gasoline engine:
Diesel engine:
NEO
NEO
F03007
(Reference)
3 ± 6 V
Below 1 V
05±798
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
2 INSPECT ECM TERMINAL VOLTAGE(NEO TERMINAL)
(a) Remove the ECM with connector still connected.
(b) Turn the ignition switch ON.
(c) Measure the voltage between terminal NEO of the ECM
and body ground under the engine conditions below.
OK:
Engine conditionVoltage
OFF (IG ON)3 to 6 V or below 1 V
ON (Idling)3 to 6 V below 1 V (Pulse)
NG REPLACE ECM
OK
IF THE SAME CODE IS STILL OUTPUT AFTER THE DTC IS DELETED, CHECK THE CONTACT
CONDITION OF EACH CONNECTION
Page 863 of 5135
05±796
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC C1201/45 ENGINE CONTROL SYSTEM MALFUNCTION
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1201/45A trouble signal in the engine control system is input.Engine control system
HINT:
If trouble occurs in the engine control system, the ECU prohibits TRC and VSC control.
INSPECTION PROCEDURE
1 CHECK DTC FOR ENGINE
ANormal Code
BMalfunction Code
B REPAIR ENGINE CONTROL SYSTEM
ACCORDING TO CODE OUTPUT
A
REPLACE ECM
05C5O±01
Page 864 of 5135
F45142
Skid Control ECU
with Actuator
SS2
SS1
YGND
YIGA S1 S1 S1 S129
13
16
30
IE83 10
W±G
W±L IE8
W±L J18
J/C
W±G
W±L
W±G
W±L GND
CANL
CANHUBAT
GND CAN
HIGH
12V CAN
LOWB
W (Shielded)
B
W (Shielded)
B
W
(Shielded)
B
W
(Shielded)
B W W±B
W±B (Shielded)1 75
6 4 2 1
3 J6C
B C
B
A
J15
J/C
IK J7E D BD
B
A A B D BJ/C
1
2
9 IE8
J6 J6 J6
J6 J6 J7
J7
J7IE8
IE8
Y1
YAW Rate Sensor
S12
Steering Sensor LHD:
W±G
C
B
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
05±793
AVENSIS REPAIR MANUAL (RM1018E)
DTC C0371/55 OPEN OR SHORT CIRCUIT IN YAW RATE
SENSOR CIRCUIT
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C0371/55
Detection of any of conditions from 1 through 4:
1. The voltage of sensor signal is out of range.
2. The offset value of sensor signal is outside the plausible
range.
3. Sensor signal changes rapidly under normal driving.
4. Yaw rate sensor value is considerably different from the
reference value of yaw rate during cornering.
Yaw rate sensor
Yaw rate sensor circuit
WIRING DIAGRAM
05C5N±01