Page 823 of 2572
G30963
IC4
S27 W Y
WG
W BWL
WB
CANL CANH
CANLCANH
CANL CANH
CANL CANHESS S14
Steering SensorJ16
J/CSkid Control ECU
With Actuator
D3
DLC31011
12
1325
2
146 9S27 S27
IC4
3
11
22 10
218
19
Y1
Yaw Rate Sensor
W BIO213 IO212
9
20VSC
STRG
VSC
STRG
YAW
DLC3S27 12
W-B
W-B
W-B1
32GND2
GND1
4 CGW-BW-B
W-B1
1 1
1 3 6
4C
4C 4N4N
W-B Passenger Side J/B
J19
J/C
W-BJ4
J/C
AAA
BF
ICEH
EB GNDYAW
DLC3
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
05-2131
2321 Author: Date:
CHECK CAN BUS LINE (CAN-L) FOR SHORT TO GND
CIRCUIT DESCRIPTION
A short to GND is suspected in the CAN bus line when there is continuity between terminals 4 (CG) and 14
(CANL) of the DLC3.
SymptomTrouble Area
There is continuity between terminals 4 (CG) and 14
(CANL) of DLC3.
Short to GND in CAN bus line (CANL)
Skid control ECU
Steering sensor
Yaw rate sensor
WIRING DIAGRAM
05IR7-02
Page 825 of 2572
C81825
12345678
9 10111213141516
G25474G26206
DLC3:
CG
CANLD3
C81825
12345678
9 10111213141516
G25474G26206
DLC3:
CG
CANLD3
C81825
12345678
9 10111213141516
G25474G26206
DLC3:
CG
CANLD3
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
05-2133
2323 Author: Date:
3 CHECK CAN BUS LINE FOR SHORT TO GND(SKID CONTROL ECU, CAN-L)
(a) Disconnect the connector (S27) from the skid control
ECU.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified value
D3-4 (CG) -
D3-14 (CANL)Ignition SW OFF3 kW or more
OK REPLACE SKID CONTROL ECU WITH
ACTUATOR (SEE PAGE 32-37)
NG
4 CHECK CAN BUS LINE FOR SHORT TO GND(STEERING SENSOR, CAN-L)
(a) Reconnect the connector (S27) to the skid control ECU.
(b) Disconnect the connector (S14) from the steering sensor.
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified value
D3-4 (CG) -
D3-14 (CANL)Ignition SW OFF3 kW or more
OK REPLACE STEERING SENSOR
(SEE PAGE 32-48)
NG
5 CHECK CAN BUS LINE FOR SHORT TO GND(YAW RATE SWENSOR, CAN-L)
(a) Reconnect the connector (S14) to the steering sensor.
(b) Disconnect the connector (Y1) from the yaw rate sensor.
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified value
D3-4 (CG) -
D3-14 (CANL)Ignition SW OFF3 kW or more
OK REPLACE YAW RATE SENSOR
(SEE PAGE 32-46)
NG
Page 826 of 2572
G25476G26430
Junction Connector:
J16
CANH
CANL
E69126
Skid Control ECU
Connector Front
View:
CANL
S27
GND1
05-2134
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
2324 Author: Date:
6 CHECK CAN BUS LINE FOR SHORT TO GND(SKID CONTROL ECU - JUNCTION
CONNECTOR, CAN-L)
(a) Reconnect the connector (Y1) to the yaw rate sensor.
(b) Disconnect the wire harness connector (J16) from the
junction connector.
(c) Disconnect the connector (S27) from the skid control
ECU.
(d) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified value
S27-25 (CANL) -
S27-32 (GND1)Ignition SW OFF1 MW more
NG REPAIR OR REPLACE CAN MAIN BUS LINE OR
CONNECTOR (SKID CONTROL ECU - JUNC-
TION CONNECTOR, CAN-L)
OK
Page 827 of 2572
G24991G26210
S14
Steering Sensor Wire Harness View:
CANLESS
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
05-2135
2325 Author: Date:
7 CHECK CAN BUS LINE FOR SHORT TO GND(STEERING SENSOR - JUNCTION
CONNECTOR, CAN-L)
(a) Disconnect the connector (S14) from the steering sensor.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified value
S14-2 (ESS) -
S14-9 (CANL)Ignition SW OFF1 MW more
HINT:
Check the wire harness connector connected to the junction
connector while disconnecting them.
NG REPAIR OR REPLACE CAN MAIN BUS LINE OR
CONNECTOR (STEERING SENSOR - JUNC-
TION CONNECTOR, CAN-L)
OK
REPAIR OR REPLACE YAW RATE SENSOR SUB BUS LINE OR CONNECTOR (CAN-L)
Page 1308 of 2572
G30959
4J4C
Battery FL MAINPassenger Side J/BY1
Yaw Rate Sensor
IG
GND 42
5CANH
CANL
2 3 YAW
YAW J16
J/C
9
20
Y
F7 FL Block
ALTInstrument Panel J/B
1A 1D
1C 1C 10
17
6 ECU-IG
AM1
12G
W4
BF WG
12 WB2 I15
Ignition SW
IG1 AM1WB
IO2
IO212
13
O
AA W-B W-BJ19
J/C
1 3
IO2 V
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
05-2107
2297 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
YAW RATE SENSOR COMMUNICATION STOP MODE
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
U0123/62
When ECU terminal IG1 voltage is 9.5 V or more, data is
not received from the yaw rate sensor for more than 1
sec.
When ECU terminal IG1 voltage is 9.5 V or more, data
can not be received from the yaw rate sensor more than
once within 5 sec .This situation repeatedly occurs more
than 10 times.
Yaw rate sensor
Yaw rate sensor sub bus line
Power source of yaw rate sensor
U0124/95
When ECU terminal IG1 voltage is 9.5 V or more, data is
not received from the deceleration the sensor for more
than 1 sec.
When ECU terminal IG1 voltage is 9.5 V or more, data
can not be received from the deceleration sensor more
than once within 5 sec. This situation repeatedly occurs
more than 10 times.
Yaw rate sensor
Yaw rate sensor sub bus line
Power source of yaw rate sensor
WIRING DIAGRAM
05DY8-04
Page 1309 of 2572
G26359
Yaw Rate Sensor Connector
Front View:
CANLCANH
Y1
G26359
Yaw Rate Sensor Connector
Front View:
IG
GND
Y1
05-2108
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
2298 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK CAN BUS LINE FOR DISCONNECTION(YAW RATE SENSOR SUB BUS
LINE)
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the connector (Y1) from the yaw rate sensor.
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified value
Y1-2 (CANL) -
Y1-3 (CANH)Ignition SW OFF54 to 69 W
NG REPAIR OR REPLACE YAW RATE SENSOR SUB
BUS LINE OR CONNECTOR (CAN-H, CAN-L)
OK
2 CHECK WIRE HARNESS(IG,GND)
(a) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified value
Y1-1 (GND) -
Body groundAlwaysBelow 1 W
(b) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester connectionConditionSpecified value
Y1-5 (IG) - Body groundIgnition SW ON10 to 14 V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE YAW RATE SENSOR (SEE PAGE 32-46)
Page 1313 of 2572
G30961
S14
Steering Sensor
CANL CANH
9CANL CANH J16
J/CSkid Control ECU
with Actuator
Y1
Yaw Rate Sensor
CANL CANH
3
2Y
W10
21
B
WG
W 12
IO2
IO29
20STRGVSC
VSC
STRG
YAW8
19L
W12
IC4
IC413B
W11
S27
S2725
13YAW 10 05-21 12
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
2302 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
CHECK CAN BUS LINES FOR SHORT CIRCUIT
CIRCUIT DESCRIPTION
The CAN bus lines are considered to be shorted when the resistance between terminals 6 (CANH) and 14
(CANL) of the DLC3 is below 54 W.
SymptomTrouble Area
Resistance between terminals 6 (CANH) and 14 (CANL) of
DLC3 is below 54 W.
Short in CAN bus lines
Skid control ECU
Steering sensor
Yaw rate sensor
WIRING DIAGRAM
05IR3-02
Page 1316 of 2572
G26359
Yaw Rate Sensor Connector
Front View:
CANLCANH
Y1
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
05-21 15
2305 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
6 CHECK CAN BUS LINES FOR SHORT(YAW RATE SENSOR SUB BUS LINE)
(a) Disconnect the connector (Y1) from the yaw rate sensor.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified value
Y1-3 (CANH) -
Y1-2 (CANL)Ignition SW OFF1 MW or more
HINT:
Check the wire harness connector connected to the junction
connector while disconnecting it.
NG REPAIR OR REPLACE YAW RATE SENSOR SUB
BUS LINE OR CONNECTOR (CAN-H, CAN-L)
OK
REPLACE YAW RATE SENSOR (SEE PAGE 32-46)
