2001 TOYOTA HIGHLANDER o2 sensor

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

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

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

G24991G26210
Steering Sensor Wire Harness View:
S14
CANHBAT
05-2120
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
2310 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
7 CHECK CAN BUS LINE FOR SHORT TO +B(STEERING SENSOR - JUNCTION
CONNECTOR, CAN-H)
(a) Disconnect the connector (S14) from the steering sensor.
(b) Measure the resistance according to the values in the
table below.
Standard:
Tester connectionConditionSpecified value
S14-10 (CANH) -
S14-3 (BAT)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 (STEERING SENSOR - JUNC-
TION CONNECTOR, CAN-H)
OK
REPAIR OR REPLACE YAW RATE SENSOR SUB BUS LINE OR CONNECTOR (CAN-H)

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 PINYAW
DLC3
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
05-2121
2311 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
CHECK CAN BUS LINE (CAN-L) FOR SHORT TO +B
CIRCUIT DESCRIPTION
A short to the +B is suspected in the CAN bus line when there is continuity between terminals 16 (BAT) and
14 (CANL) of the DLC3.
SymptomTrouble Area
There is continuity between terminals 16 (BAT) and 14
(CANL) of DLC3.

Short to +B in CAN bus line (CANL)

Skid control ECU

Steering sensor

Yaw rate sensor
WIRING DIAGRAM
05IR5-03

C81825
12345678
9 10111213141516
G25474G26206
DLC3:
CANL
BATD3
C81825
12345678
9 10111213141516
G25474G26206
DLC3:
CANL
BATD3
C81825
12345678
9 10111213141516
G25474G26206
DLC3:
CANL
BATD3
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
05-2123
2313 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK CAN BUS LINE FOR SHORT TO +B(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
D3-14 (CANL) -
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-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
D3-14 (CANL) -
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-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.
Tester connectionConditionSpecified value
D3-14 (CANL) -
D3-16 (BAT)Ignition SW OFF1 MW or more
OK REPLACE YAW RATE SENSOR
(SEE PAGE 32-46)
NG

G25476G26430
Junction Connector:
J16
CANH
CANL
E69126
Skid Control ECU
Connector Front
View:
CANL
S27
+BS
05-2124
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
2314 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
6 CHECK CAN BUS LINE FOR SHORT TO +B(SKID CONTROL ECU - JUNCTION
CONECTOR, 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) -
S27-31 (+BS)Ignition SW OFF1 MW or more
NG REPAIR OR REPLACE CAN MAIN BUS LINE OR
CONNECTOR (SKID CONTROL ECU - JUNC-
TION CONNECTOR, CAN-L)
OK

G24991G26210
Steering Sensor Wire Harness View:
BAT
CANL
S14
- DIAGNOSTICSCAN COMMUNICATION SYSTEM
05-2125
2315 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
7 CHECK CAN BUS LINE FOR SHORT TO +B(STEERING SENSOR - JUNCTION
CONNESTOR, CAN-L)
(a) Disconnect the connector (S14 ) from the steering sen-
sor.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified value
S14-9 (CANL) -
S14-3 (BAT)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 (STEERING SENSOR - JUNC-
TION CONNECTOR, CAN-L)
OK
REPAIR OR REPLACE YAW RATE SENSOR SUB BUS LINE OR CONNECTOR (CAN-L)