Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 20vza ciu0126
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05-1957
DIAGNOSTICS - CAN COMMUNICATION SYSTEM 05BYO-02
STEERING ANGLE SENSOR COMMUNICATION STOP MODE
CIRCUIT DESCRIPTION
DTC No. DTC Detecting Condition Trouble Area
S When ECU terminal IG1 voltage is 9.5 V or more, the data
is not received from steering angle sensor for more than 1
S Open circuit for between steering angle sensor and junction
sec.
U0126/63 connector
S When ECU terminal IG1 voltage is 9.5 V or more, the data
S Steering angle sensor
received from steering angle sensor is impossible once or
more within 5 sec., and it repeatedly occurs 10 times.
WIRING DIAGRAM
D1 DLC3
S9 Skid Control ECU
CANL CANH with Actuator
Seering Angle Sensor
14 6
W 15 B 4
J/C 25
1 15
CANL W W W CANL
J6 J5 S3
9 11 12
J/C
J17 15 1 11
B B B
J6 J5 S3
CANH 10 1 2 CANH
W 13 B 3
16 J31 J31 8
J/C
8 J32 J32 16
W 2 B 3
CANL CANH
Y1
Yaw Rate Sensor
C87488
INSPECTION PROCEDURE
1 CHECK RESISTANCE(CANL - CANH OF DLC3)
CANL
(a) Measure the resistance between the terminal CANL and
CANH of the DLC3.
A 1 M or more
B 54 to 66
CANH
C52361
B Go to step 3
A
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2140
05-1958
DIAGNOSTICS - CAN COMMUNICATION SYSTEM
2 CHECK HARNESS AND CONNECTOR(SKID CONTROL ECU - DLC3)
(a) Disconnect the junction connector (J17).
DLC3: CANH
(b) Measure the resistance between the terminal CANL of
the DLC3 and CANL of the junction connector (J17).
1 2 3 4 5 6 7 8 OK:
Resistance: 1 or less
9 10 11 12 13 14 15 16 (c) Measure the resistance between the terminal CANH of
the DLC3 and CANH of the junction connector (J17).
OK:
CANL Resistance: 1 or less
Junction Connector (J17):
CANH
CANL
C87482 OK Go to step 3
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR AND GO TO STEP 3
3 CHECK RESISTANCE(CANL - CANH OF STEERING ANGLE SENSOR
CONNECTOR)
(a) Disconnect the steering angle sensor connector.
(b) Measure the resistance between the terminals CANL and
CANH
CANH of the steering angle sensor wire harness side con-
nector.
OK:
Resistance: 108 to 132
CANL
F45110
OK Go to step 5
NG
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2141
05-1959
DIAGNOSTICS - CAN COMMUNICATION SYSTEM
4 CHECK JUNCTION CONNECTOR(J17)
(a) Disconnect the junction connector (J17).
CANH CANH (b) Measure the resistance between the terminals 1 and 4 of
the junction connector.
OK:
Resistance: 1 or less
(c) Measure the resistance between the terminals 12 and 15
of the junction connector.
OK:
CANL CANL Resistance: 1 or less
C87483
NG REPLACE JUNCTION CONNECTOR
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR
5 CHECK RESISTANCE(CANL - CANH OF STEERING ANGLE SENSOR)
(a) Disconnect the skid control ECU connector.
(b) Measure the resistance between the terminals CANL and
CANH
CANH of the steering angle sensor.
OK:
Resistance: 108 to 132
CANL
F45111
NG Go to step 6
OK
IF THE SAME CODE IS STILL OUTPUT AFTER THE DTC IS DELETED, CHECK THE CONTACT
CONDITION OF EACH CONNECTION
6 CHECK TERMINAL VOLTAGE(STEERING ANGLE SENSOR CONNECTOR)
(a) Disconnect the steering angle sensor connector.
ESS
(b) Turn the ignition switch ON.
(c) Measure voltage between terminals 1 and 2, 2 and 3 of
the steering angle sensor harness side connector.
OK:
Voltage: 10 to 14 V
IG1 BAT OK REPAIR OR REPLACE HARNESS OR
F45110 CONNECTOR
NG
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2142
05-1960
DIAGNOSTICS - CAN COMMUNICATION SYSTEM
7 CHECK HARNESS AND CONNECTOR(STEERING ANGLE SENSOR - BODY
GROUND)
(a) Disconnect the steering angle sensor connector.
ESS
(b) Measure the resistance between terminal ESS of the yaw
rate sensor connector and body ground.
OK:
Resistance: 1 or less
NG REPAIR OR REPLACE HARNESS OR
F45110 CONNECTOR
OK
REPLACE STEERING ANGLE SENSOR
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2143
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