TOYOTA AVENSIS 2005 Service Repair Manual

05±824
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1CHECK HARNESS AND CONNECTOR(YAW RATE SENSOR ± SKID CONTROL ECU)
(a)Check for an open or short circuit in harness and connector between the \
yaw rate sensor and skid
control ECU (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
2 CHECK HARNESS AND CONNECTOR(STEERING ANGLE SENSOR ± SKID CONTROL ECU)
(a) Check for an open or short circuit in harness and connector between the steer\
ing angle 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)

C94397
GND
IG1
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
05±819
AVENSIS REPAIR MANUAL (RM1018E)
DTCC1300/62SKID CONTROL ECU MALFUNCTION
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1300/62
1.Skid control ECU continuously detects the continuous
operation of ABS at all 4 wheels for max. 1.28 sec.
2.Continuos VSC operation for 10 sec. or more.
3.Internal malfunction in ECU.

ECU
INSPECTION PROCEDURE
1RECONFIRM DTC
ADTC C1300/62
BExcept DTC C1300/62
BREPAIR CIRCUIT INDICATED BY OUTPUT
CODE
A
2INSPECT SKID CONTROL ECU CONNECTOR(IG1 TERMINAL VOLTAGE)
WITH 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.
WITHOUT USING HAND±HELD TESTER:
(a)Disconnect the skid control connector.
(b)Turn the ignition switch ON.
(c)Measure the voltage between terminals IG1 and GND ofthe skid control ECU harness side connector.
OK:
Voltage: 10 to 14 V
OKREPLACE ABS & TRACTION ACTUATOR ASSY (See page 32±57)
NG
05789±02

C94397
GND
05±820
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
3 INSPECT SKID CONTROL ECU CONNECTOR(GND TERMINAL CONTINUITY)
(a) Disconnect the skid control ECU connector.
(b) Measure resistance between terminal GND of the skid
control ECU harness side connector and body ground.
OK:
Resistance: 1
or less
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
CHECK AND REPAIR HARNESS AND CONNECTOR

05±818
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTCC1288/88ECU VERSION MISS MATCHI
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1288/88
When either of the following 1 or 2 is detected:
1.ECM does not match.
2.Steering angle sensor is not calibrated.
ECM

Steering angle sensor calibration.
INSPECTION PROCEDURE
1PERFORM STEERING ANGLE SENSOR ZERO POINT CALIBRATION
(a)Perform the steering angle sensor zero point calibration (See page 05±756).
2 RECONFIRM DTC
(a) Check if the same DTC is stored in the memory.
NO END
YES
3 CHECK HARNESS AND CONNECTOR(STEERING ANGLE SENSOR ± SKID CONTROL ECU)
(a) Check for an open or short circuit in harness and connector between the \
steering angle 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)
05788±02

± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
05±815
AVENSIS REPAIR MANUAL (RM1018E)
DTC C1249/58 STOP LIGHT SWITCH CIRCUIT
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1249/58
After the ignition switch is turned ON, the condition that the
STP terminal voltage of ECU is 40 % to 67 % of supplied
voltage, continues for 1 second or more.
Stop light switch circuit
05439±04


F45775
Engine Room J/B No.4
ALT 1
4B1
4D B±G (*1)
B±L (*2) FL MAINS1 37
IR1Skid Control ECU
with Actuator
DA
DA DNDMDL 1
1 2
1
1 22
22 STOPDriver Side J/B
G±W (*4) G±W (*4)
G±W (*3)
G±W (*3)6
IE3
IE3 IR12
11
R±W (*3) R±W (*4) R±W (*4)
R±W (*3) S13
Stop Light SW
G±W
G±W
B±G (*1)
STP
123 ALT Engine Room R/B No.3
W (*2)
ED11 12
J/C
J30B
(*5) (*6) (*7) (*5) (*6) (*7)
(*5) (*6) (*7) (*5) (*6) (*7)STOP
STOP J31CJ32
J/C
B (*2)
W±B (*5) G±W (*5) W±B (*5)
W±B
W±B
W±B
(*5)
CC2 1
R13
R14 R14 R14 R14 R14 R14R13 R13 R13 R13 R13J30
J30
J30 J31
J31 21
1 54 64
4 7 3
3 3 6
G±WJ/C
C
C
C B B
G±W G±W
G±W (*6, *7)
BG1Rear Combination Light LHH20
High Mounted Stop Light
N8
Noise
Filter
(Stop Light) Rear Combination Light RH
H20 High Mounted
Stop Light
W±B (*7)
W±B (*7)G±W (*7)
W±B (*7) W±B (*7) W±B (*6)W±B (*6)G±W (*6)
W±B (*6, *7)
W±B (*6, *7)
W±B
(*6) (*7)W±B (*6)
W±B (*6)
J33 J34AAJ/C1 2BE1
BD1 BF113
G±W L(*6)
L(*7)
BD1 BF1(*6) (*7)(*6, *7)
G±W
(*8, *9)
1
BX BE1 BG1 41
2 3
24
BT BS Battery
*1: 1AZ±FSE
*2: 1CD±FTV
*3: LHD
*4: RHD*5: S/D
*6: L/B
*7: W/G 05±816
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM

C94397STP
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
05±817
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1INSPECT STOP LAMP SWITCH ASSY
(a)Check that the stop light comes on when the brake pedal is depressed and goes\
off when the brake
pedal is released.
NGGo to step 4
OK
2INSPECT SKID CONTROL ECU TERMINAL VOLTAGE(STP TERMINAL)
(a)Disconnect the skid control ECU connector.
(b)Measure the voltage between terminal STP of the skid control ECU harness side connector and body ground
when the brake pedal is depressed.
OK:
Voltage: 8 to 14 V
OKREPLACE ABS & TRACTION ACTUATOR ASSY (See page 32±57)
NG
3 CHECK HARNESS AND CONNECTOR(STOP LIGHT SWITCH ± SKID CONTROL ECU)
(a) Check for an open or short circuit in harness and connector between the stop light switch and skid
control ECU (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE
4 CHECK HARNESS AND CONNECTOR(STOP LIGHT CIRCUIT)
(a)Check for an open or short circuit in harness and connector of the stop light\
circuit (See page 01±32). OK REPLACE STOP LAMP SWITCH ASSY
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR

F45141
Skid Control ECU
with Actuator
12
S1
VCM 11
PMC
27E2
S1
S1
STP 37
S1
Battery FL MAIN O1
Oil Pressure Sensor
1
Y±G
1
4B
1
2 2
*1: 1AZ±FSE
*2: 1CD±FTV3
12 33ALT Engine Room R/B No.3
B (*2)
B±G (*1)1
4D Engine Room J/B No.4B±G (*1)
B±L (*2) W (*2) R±W (*3)1 2Y±R
GR
R±W (*4)R±W (*3)
R±W (*4)
11 1 2 2
22DL DA
DA DNDM IR1
6
IE3
11
IE3
2
IR1
ED1 1Driver Side J/B
S13 Stop Light SW
G±W (*3)G±W (*3)G±W (*4) G±W (*4) G±W
To
Stop
Light
B±G (*1)
STOP
*3: LHD
*4: RHDALT 05±812
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC C1246/53 MALFUNCTION IN MASTER CYLINDER
PRESSURE SENSOR
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1246/53
When any of the following 1 through 3 is detected:
1. The voltage of sensor signal is out of range (less than
0.3 V, more than 4.7 V).
2. The sensor supply voltage is out of range (above 5.6 V,
below 4.4 V).
3. The sensor signal offset value is out of range.
4. Gradient of sensor signal is not within allowed range.

Master cylinder pressure sensor

Master cylinder pressure sensor circuit
WIRING DIAGRAM
05787±02

±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
05±813
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 MASTER CYLINDER PRESSURE SENSOR
(a)Select the DATALIST mode on the hand±held tester.
(b)Check that the brake fluid pressure value of the No.1 master cylinder pressur\
e sensor and No.2 master
cylinder pressure sensor displayed on the hand±held tester changes wh\
en depressing the brake ped-
al.
OK:
Brake fluid pressure value is changing.
OKGo to step 4
NG
2INSPECT STOP LAMP SWITCH ASSY
(a)Check that the stop light comes on when the brake pedal is depressed and goes\
off when the brake pedal is released.
NGREPAIR OR REPLACE HARNESS ORCONNECTOR
OK
3CHECK HARNESS AND CONNECTOR(MASTER CYLINDER PRESSUR SENSOR ± SKID CONTROL ECU)
(a)Check for an open or short circuit in harness and connector between terminal \
of the master cylinder
pressure sensor and skid control ECU (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK

C94397STP
05±814
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
4INSPECT SKID CONTROL ECU TERMINAL VOLTAGE(STP TERMINAL)
(a)Disconnect the skid control ECU connector.
(b)Measure the voltage between terminal STP of the skid control ECU harness side connector and body ground
when the brake pedal is depressed.
OK:
Voltage: 8 to 14 V
NGREPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY(See page 32±57)