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05-1953
DIAGNOSTICS - CAN COMMUNICATION SYSTEM 05BYN-02
YAW RATE 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 yaw rate sensor for more than 1 sec. S Open circuit for between yaw rate sensor and junction con-
U0123/62 S When ECU terminal IG1 voltage is 9.5 V or more, the data nector
received from yaw rate sensor is impossible once or more S Yaw rate sensor
within 5 sec., and it repeatedly occurs 10 times.
S When ECU terminal IG1 voltage is 9.5 V or more, the data
is not received from deceleration sensor for more than 1
S Open circuit for between yaw rate sensor and junction con-
sec.
U0124/95 nector
S When ECU terminal IG1 voltage is 9.5 V or more, the data
S Yaw rate sensor
received from deceleration 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
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2136
05-1954
DIAGNOSTICS - CAN COMMUNICATION SYSTEM
INSPECTION PROCEDURE
1 CHECK RESISTANCE(CANL - CANH OF DLC3)
CANL
(a) Measure the resistance between the terminals CANL and
CANH of the DLC3.
A 54 to 66
B 1 M or more
CANH
C52361
A Go to step 3
B
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
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2137
05-1955
DIAGNOSTICS - CAN COMMUNICATION SYSTEM
3 CHECK HARNESS AND CONNECTOR(CANL - CANH OF YAW RATE SENSOR
CONNECTOR)
(a) Connect the junction connector (J17).
CANH (b) Disconnect the yaw rate sensor connector.
(c) Measure the resistance between the terminals CANL and
CANH of the yaw rate sensor wire harness side connec-
tor.
OK:
Resistance: 1 M or higher
CANL
F45082
OK Go to step 5
NG
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 TERMINAL VOLTAGE(YAW RATE SENSOR CONNECTOR)
(a) Disconnect the yaw rate sensor connector.
GND (b) Turn the ignition switch ON.
(c) Measure the voltage between terminals IG and GND of
the yaw rate sensor connector.
OK:
Voltage: 10 to 14 V
IG
F45082
OK REPAIR OR REPLACE HARNESS OR
CONNECTOR
NG
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2138
05-1956
DIAGNOSTICS - CAN COMMUNICATION SYSTEM
6 CHECK HARNESS AND CONNECTOR(YAW RATE SENSOR - BODY GROUND)
(a) Disconnect the yaw rate sensor connector.
GND (b) Measure the resistance between terminal GND of the yaw
rate sensor connector and body ground.
OK:
Resistance: 1 or less
NG REPAIR OR REPLACE HARNESS OR
F45082 CONNECTOR
OK
REPLACE YAW RATE SENSOR
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2139
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