TOYOTA HIGHLANDER 2001 Service Repair Manual
Page 1311 of 2572
C81825
12345678
9 10111213141516
G25474G26206
DLC3:
CANH
CANLD3
05-21 10
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
2300 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK DLC3
(a) Turn the ignition switch to the LOCK position.
(b) Measure the resistance according to the value(s) in the
table below.
Result:
Tester connectionConditionSpecified valueResult
D3-6 (CANH) -
D3-14 (CANL)Ignition SW OFF108 to 132 WA
D3-6 (CANH) -
D3-14 (CANL)Ignition SW OFF132 W or moreB
NOTICE:
When the measured value is 132 W or more and the CAN
communication system diagnostic code is output, there
may be a fault besides disconnection of the DLC3 sub bus
line. For that reason, troubleshooting should be performed
again from ºHow to proceed with troubleshootingº after re-
pairing the trouble area.
B REPAIR OR REPLACE DLC3 SUB BUS LINE OR
CONNECTOR (CAN-H, CAN-L)
A
2 READ OUTPUT DTC
(a) Read the output diagnostic codes.
Standard:
U0073/94, U0123/62, U0124/95 and U0126/63 are output simultaneously.A
Only U0126/63 is output.B
NOTICE:
Diagnostic codes other than the CAN communication system diagnostic codes (U0073/94, U0123/62,
U0124/95, U0126/63) may be output simultaneously with the CAN codes.
B Go to step 4
A
Page 1312 of 2572
E69126
Skid Control ECU Connector
Front View:
CANH
CANL
S27
G24991G26210
Steering Sensor Wire Harness View:
S14
CANH
CANL
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
05-21 11
2301 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK CAN MAIN BUS LINE FOR DISCONNECTION(SKID CONTROL ECU -
JUNCTION CONNECTOR)
(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
S27-1 1 (CANH) -
S27-25 (CANL)Ignition SW OFF108 to 132 W
NG REPAIR OR REPLACE CAN MAIN BUS LINE OR
CONNECTOR (SKID CONTROL ECU - JUNC-
TION CONNECTOR)
OK
REPLACE SKID CONTROL ECU WITH ACTUATOR (SEE PAGE 32-37)
4 CHECK CAN MAIN BUS LINE FOR DISCONNECTION(STEERING SENSOR -
JUNCTION CONNECTOR)
(a) Turn the ignition switch to the LOCK position.
(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
S14-10 (CANH) -
S14-9 (CANL)Ignition SW OFF108 to 132 W
NG REPAIR OR REPLACE CAN MAIN BUS LINE OR
CONNECTOR (STEERING SENSOR - JUNC-
TION CONNECTOR)
OK
REPLACE STEERING SENSOR (SEE PAGE 32-48)
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 1314 of 2572
G25476G26430
Junction Connector:
J16
CANH
CANL
C81825
12345678
9 10111213141516
G25474G26206
DLC3:
CANH
CANLD3
E69126
Skid Control ECU
Connector Front
View:CANH
CANL
S27
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
05-21 13
2303 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK CAN BUS LINES FOR SHORT(DLC3 SUB BUS LINE)
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the wire harness connector (J16) from the
junction connector.
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified value
D3-6 (CANH) -
D3-14 (CANL)Ignition SW OFF1 MW or more
NG REPAIR OR REPLACE DLC3 SUB BUS LINE OR
CONNECTOR (CAN-H, CAN-L)
OK
2 CHECK CAN BUS LINES FOR SHORT(SKID CONTROL ECU - JUNCTION
CONNECTOR)
(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
S27-1 1 (CANH) -
S27-25 (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 CAN MAIN BUS LINE OR
CONNECTOR (CAN-H, CAN-L)
OK
Page 1315 of 2572
G26199G28087
Skid Control ECU:
CANH
CANL
G24991G26210
Steering Sensor Wire Harness View:
S14
CANH
CANL
G24692 G25475G26209
Steering Sensor:
CANH CANL
05-21 14
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
2304 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 INSPECT SKID CONTROL ECU WITH ACTUATOR(CANH - CANL)
(a) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified value
11 (CANH) - 25 (CANL)Ignition SW OFF108 to 132 W
NG REPLACE SKID CONTROL ECU WITH
ACTUATOR (SEE PAGE 32-37)
OK
4 CHECK CAN BUS LINES FOR SHORT(STEERING SENSOR - JUNCTION
CONNECTOR)
(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
S14-10 (CANH) -
S14-9 (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 STEERING SENSOR
SUB BUS LINE OR CONNECTOR (CAN-H,
CAN-L)
OK
5 INSPECT STEERING SENSOR(CANH - CANL)
(a) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified value
10 (CANH) - 9 (CANL)Ignition SW OFF108 to 132 W
NG REPLACE STEERING SENSOR
(SEE PAGE 32-48)
OK
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)
Page 1317 of 2572
G30962
1E
1G
2I2A IC4
S27 W Y
B WG
W BWL
WB
CANL CANH
CANLCANH
CANLCANH
CANL CANH BAT S14
Steering SensorJ16
J/CSkid Control ECU
With Actuator
D3
DLC310
311 12
1325
2
146
14
31 2 3 9
1
+BS Instrument Panel J/B
F7
FL BlockEngine Room J/BOBD
ECU-B
ALTBR
W-L
FL
MAIN
Battery1 J17
J/C
P
ES27 S27 IC4
3
11
2210
218
19
Y1
Yaw Rate Sensor
W B
IO213 IO212
BAT9
20
81A
B 1D9 10
10
P 16W
EIC35 VSC
STRG
VSC
STRG
YAW
DLC3
WSHORT PIN
WDLC3YAW 05-21 16
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
2306 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
CHECK CAN BUS LINE (CAN-H) FOR SHORT TO +B
CIRCUIT DESCRIPTION
A short to +B is suspected in the CAN bus line when there is continuity between terminals 16 (BAT) and 6
(CANH) of the DLC3.
SymptomTrouble Area
There is continuity between terminals 16 (BAT) and 6
(CANH) of DLC3.
Short to +B in CAN bus line (CANH)
Skid control ECU
Steering sensor
Yaw rate sensor
WIRING DIAGRAM
05IR4-03
Page 1318 of 2572
G25476G26430
Junction Connector:
J16
CANH
CANL
C81825
12345678
9 10111213141516
G25474G26206
DLC3:
CANH
BATD3
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
05-21 17
2307 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK CAN BUS LINE FOR SHORT TO +B(DLC3 SUB BUS LINE, CAN-H)
(a) Disconnect the wire harness connector (J16) from the
junction connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified value
D3-6 (CANH) -
D3-16 (BAT)Ignition SW OFF1 MW or more
NG REPAIR OR REPLACE DLC3 SUB BUS LINE OR
CONNECTOR (CAN-H)
OK
2 CONNECTION OF CONNECTORS
(a) Reconnect the wire harness connectors (J16) to the junction connector.
Page 1319 of 2572
C81825
12345678
9 10111213141516
G25474G26206
DLC3:
CANH
BATD3
C81825
12345678
9 10111213141516
G25474G26206
DLC3:
CANH
BATD3
C81825
12345678
9 10111213141516
G25474G26206
DLC3:
CANH
BATD3
05-21 18
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
2308 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK CAN BUS LINE FOR SHORT TO +B(SKID CONTROL ECU, CAN-H)
(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
D3-6 (CANH) -
D3-16 (BAT)Ignition SW OFF1 MW or more
OK REPLACE SKID CONTROL ECU WITH
ACTUATOR (SEE PAGE 32-37)
NG
4 CHECK CAN BUS LINE FOR SHORT TO +B(STEERING SENSOR, CAN-H)
(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
D3-6 (CANH) -
D3-16 (BAT)Ignition SW OFF1 MW or more
OK REPLACE STEERING SENSOR
(SEE PAGE 32-48)
NG
5 CHECK CAN BUS LINE FOR SHORT TO +B(YAW RATE SENSOR, CAN-H)
(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
D3-6 (CANH) -
D3-16 (BAT)Ignition SW OFF1 MW or more
OK REPLACE YAW RATE SENSOR
(SEE PAGE 32-46)
NG
Page 1320 of 2572
G25476G26430
Junction Connector:
J16
CANH
CANL
E69126
Skid Control ECU
Connector Front
View:CANH
S27
+BS
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
05-21 19
2309 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
6 CHECK CAN BUS LINE FOR SHORT TO +B(SKID CONTROL ECU - JUNCTION
CONNECTOR, CAN-H)
(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
S27-1 1 (CANH) -
S27-31 (+BS)Ignition SW OFF1 MW or more
NG REPAIR OR REPLACE CAN MAIN BUS LINE OR
CONNECTOR (SKID CONTROL ECU - JUNC-
TION CONNECTOR, CAN-H)
OK