TOYOTA AVENSIS 2005 Service Repair Manual

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

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

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

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

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 05±794
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)

C95217
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
05±795
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 YAWRATE SENSOR
(a)Remove the 2 bolts and yaw rate sensor with connector
still connected.
(b)Connect the hand±held tester to the DLC3.
(c)Turn the ignition switch and hand±held tester main switch ON.
(d)Select the DATALIST mode on the hand±held tester.
(e)Check the yaw rate value 0
5 deg/s.
(f)Check that the yaw rate value of the yaw rate sensor dis- played on the hand±held tester is changing: Place the
yaw rate sensor vertically to the ground and turn the sen-
sor pivoted on its center.
OK:
Yaw rate value is changing.
OKREPLACE ABS & TRACTION ACTUATOR ASSY (See page 32±57)
NG
2 CHECK HARNESS AND CONNECTOR(YAW RATE SENSOR ± 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 yaw rate sensor and skid control ECU (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY(See page 32±57)

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 05±790
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC C0365/43 MALFUNCTION IN DECELERATION SENSOR
CIRCUIT DESCRIPTION
The lateral acceleration sensor is combined with the yaw rate sensor.
DTC No.DTC Detecting ConditionTrouble Area
C0365/43
Detection of any of conditions from 1 through 2:
1. Lateral acceleration difference between sensor signal
and reference value is large.
2. Offset value of sensor signal is higher than the standard
value.
3. Sensor signal is out of range

Yaw rate sensor

Yaw rate sensor circuit
WIRING DIAGRAM
05C5L±01

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±791
AVENSIS REPAIR MANUAL (RM1018E)

C95216
05±792
±
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 YAWRATE SENSOR(INCLUDE LATERAL ACCELERATION SENSOR)
(a)Remove the 2 bolts and lateral acceleration sensor with
connector still connected.
(b)Connect the hand±held tester to the DLC3
(c)Turn the ignition switch and hand±held tester main switch ON.
(d)Select the DATALIST mode on the hand±held tester.
(e)Check the lateral acceleration value 0
0.23 G.
(f)Check that the acceleration value displayed on the hand±
held tester is changing: Place the yaw rate sensor verti-
cally to the ground and turn the sensor pivoted on its cen-
ter.
OK:
Lateral acceleration value is changing.
OKREPLACE ABS & TRACTION ACTUATOR ASSY (See page 32±57)
NG
2 CHECK HARNESS AND CONNECTOR(YAW RATE SENSOR ± 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 yaw rate sensor and skid control ECU (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY(See page 32±57)

C95006
Battery FL MAINSkid Control ECU with Actuator
B
L
1 ALT ABS No.2 Engine Room R/B and J/B
1
1A
W±BS1
S165
+BS
12
GND2 GND1
S1 10 W±B
W±B
EA12
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
05±787
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. 3 or more solenoid valves are shown faulty in response
and simultaneously valve supply voltage is detected
faulty.
2. Solenoid valve relay is not turned OFF.

ABS solenoid relay

ABS solenoid relay circuit
WIRING DIAGRAM
05782±02