TOYOTA HIGHLANDER 2001 Service Repair Manual

B66220 YB66220 YB66229
T14
Transponder Key ECU Assy
E6
ECM Wire Harness Side
- DIAGNOSTICSENGINE IMMOBILIZER SYSTEM
05-201 1
2201 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK WIRE HARNESS (TRANSPONDER KEY ECU ASSY - ECM)
(TRANSPONDER KEY ECU ASSY OR ECM - BODY GROUND)
(a) Disconnect the T14 ECU and E6 ECM connectors.
(b) Measure the resistance between the wire harness side
connectors.
Standard:
Symbols (Terminal No.)Specified Condition
EFIO (T14-6) - IMI (E6-27)Below 1 W
EFII (T14-7) - IMO (E6-26)Below 1 W
(c) Measure the resistance between the T14 or E6 wire har-
ness side connector and the body ground.
Standard:
Symbols (Terminal No.)Specified Condition
EFIO (T14-6) or IMI (E6-27) -
Body ground10 kW or higher
EFII (T14-7) or IMO (E6-26) -
Body ground10 kW or higher
OK REPAIR OR REPLACE HARNESS AND
CONNECTOR
NG
2 CHECK OPERATION OF TRANSPONDER KEY AMPLIFIER
(a) After replacing the transponder key amplifier with a normally functioning amplifier, check that the en-
gine starts.
NG REPLACE TRANSPONDER KEY ECU ASSY
OK
NORMAL (TRANSPONDER KEY AMPLIFIER DEFECTIVE)

H10600H10600H10600H41086
DLC3DTC B1100/31
CG
TC
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1319
1509 Author
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2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B1100/31 AIRBAG SENSOR ASSY CENTER
MALFUNCTION
CIRCUIT DESCRIPTION
The airbag sensor assy center consists of a airbag sensor assy center, safing sensor, drive circuit, diagnosis
circuit and ignition control, etc.
It receives signals from the airbag sensor, judges whether or not the SRS must be activated, and detects
diagnosis system malfunction.
DTC B1100/31 is recorded when occurrence of a malfunction in the airbag sensor assy center is detected.
DTC No.DTC Detecting ConditionTrouble Area
B1100/31
Airbag sensor assy center malfunction
Airbag sensor assy center
HINT:
When a trouble code is displayed simultaneously with B1100/31, repair the malfunction indicated by this
code (except B1100/31) first.
INSPECTION PROCEDURE
1 CHECK AIR BAG SENSOR ASSY CENTER
(a) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(b) Clear the DTCs stored in memory (see page 05-1215).
(c) Turn the ignition switch to the LOCK position.
(d) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(e) Check the DTCs (see page 05-1215).
OK:
DTC B1100/31 is not output.
NG REPLACE AIR BAG SENSOR ASSY CENTER
(SEE PAGE 60-53)
OK
USE SIMULATION METHOD TO CHECK
05IVG-01

H40997
DLC3DTC B1135/24
CG
TCAirbag
Sensor
Assy
Center
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- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1510 Author
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2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B1135/24 HALF CONNECTION IN AIRBAG SENSOR
ASSY CENTER CONNECTORS
CIRCUIT DESCRIPTION
The airbag sensor assy center detects partial connection of connector.
DTC B1135/24 is recorded when the airbag sensor assy center detects an open in the electrical connection
check mechanism of the airbag sensor connector or in the airbag sensor circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1135/24

Malfunction of electrical connection check mechanism of
airbag sensor assy center connector

Airbag sensor assy center malfunction
Electrical connection check mechanism

Airbag sensor assy center
INSPECTION PROCEDURE
1 CHECK AIRBAG SENSOR ASSY CENTER CONNECTOR
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Check the connection of the airbag sensor assy center connectors.
OK:
The connectors are connected.
HINT:
When the connectors are not firmly connected, disconnect them once and reconnect them securely.
2 CHECK AIR BAG SENSOR ASSY CENTER
(a) Connect the negative (-) terminal cable to the battery,
and wait at least for 2 seconds.
(b) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(c) Clear the DTCs stored in memory (see page 05-1215).
(d) Turn the ignition switch to the LOCK position.
(e) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(f) Check the DTCs (see page 05-1215).
OK:
DTC B1135/24 is not output.
HINT:
Codes other than code B1135/24 may be output at this time, but
they are not related to this check.
NG Go to step 3
OK
USE SIMULATION METHOD TO CHECK
05262-05

C83399
C81406H41456
Disconnection Detection Pin
w/ Side and Curtain Shield Airbag: w/o Side and Curtain Shield Airbag:
Disconnection Detection Pin
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
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1511 Author
: Date
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2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 PERFORM A VISUAL CHECK OF THE DISCONNECTION DETECTION PIN
(a) Check the disconnection detection pin of the connector.
HINT:
Compare one connector with the other 2 connectors.
OK:
No deformation is identified.
NG REPAIR OR REPLACE AIRBAG SENSOR ASSY
CENTER CONNECTOR
OK
REPLACE AIR BAG SENSOR ASSY CENTER (SEE PAGE 60-53)

H43054
S17
Side Airbag Sensor Assy RH
Airbag Sensor Assy Center
B
W
G
R ESR
VUPR
SSR+
SSR-1
4
3
2A1815
17
16
13ESR
VUPR
SSR+
SSR- A18
A18
A18 (*1)
(*1)
(*1)
(*1)
*1: w/ Curtain Shield Airbag 05-1322
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1512 Author
: Date
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2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B1140/32 SIDE AIRBAG SENSOR ASSY (RH)
MALFUNCTION
The side airbag sensor assy RH consists of the safing sensor, diagnosis circuit and lateral deceleration sen-
sor, etc.
It receives signals from the lateral deceleration sensor, judges whether or not the SRS must be activated,
and detects diagnosis system malfunction.
DTC B1140/32 is recorded when occurrence of a malfunction in the side airbag sensor assy RH (RH) is de-
tected.
DTC No.DTC Detecting ConditionTrouble Area
B1140/32
Side airbag sensor assy RH circuit malfunction

Side airbag sensor assy RH

Floor wire

Airbag sensor assy center
WIRING DIAGRAM
05IVK-01

H10600H01012
H01065H10600H01012
H01065H40442
Side
Airbag
Sensor
Assy RHAirbag
Sensor
Assy
Center
DLC3
CG TC
DTC B1140/32
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1323
1513 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK DTC
(a) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(b) Clear the DTCs stored in memory (see page 05-1215).
(c) Turn the ignition switch to the LOCK position.
(d) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(e) Check the DTCs (see page 05-1215).
OK:
DTC B1140/32 is not output.
HINT:
Codes other than code B1140/32 may be output at this time, but
they are not related to this check.
NG Go to step 2
OK
USE SIMULATION METHOD TO CHECK
2 CHECK CONNECTION OF CONNECTORS
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait at least for 90 seconds.
(c) Check that the connector is properly connected to the airbag sensor assy center and the side airbag
sensor assy RH.
NG CONNECT CONNECTORS, THEN GO TO STEP
1
OK

H01015
C91384
C91385 C82599H01015
C91384
C91385 C82599
H42483
Airbag
Sensor
Assy
Center
ESR
VUPR
SSR+
SSR- Side Airbag
Sensor Assy RHFloor Wire
SST
D
CBA
ESR
VUPRSSR+ SSR- S17
A18
H01015C83438H01015C83438H42229
Airbag
Sensor
Assy
Center
ESR
VUPR
SSR+Floor Wire
Side Airbag
Sensor Assy RHD
CBA
SSR-
A18
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- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
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2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK FLOOR WIRE(OPEN)
(a) Disconnect the connectors from the airbag sensor assy
center and the side airbag sensor assy RH.
(b) Using SST, connect S17-4 (VUPR) and S17-1 (ESR),
and connect S17-3 (SSR+) and S17-2 (SSR-) of con-
nector ºCº.
SST 09843-18040
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
A18-17 (VUPR) -
A18-15 (ESR)AlwaysBelow 1 W
A18-16 (SSR+) -
A18-13 (SSR-)AlwaysBelow 1 W
NG REPAIR OR REPLACE FLOOR WIRE
OK
4 CHECK FLOOR WIRE(TO GROUND)
(a) Disconnect the SST from connector ºCº.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
A18-17 (VUPR) -
Body groundAlways1 MW or Higher
A18-15 (ESR) -
Body groundAlways1 MW or Higher
A18-16 (SSR+) -
Body groundAlways1 MW or Higher
A18-13 (SSR-) -
Body groundAlways1 MW or Higher
NG REPAIR OR REPLACE FLOOR WIRE
OK

H01015C83438H01015C83438H42229
Side Airbag
Sensor Assy RHAirbag
Sensor
Assy
Center
ESR
VUPR
SSR+
Floor Wire
D
CBA
SSR-
A18
H01015C83438H01015C83438H42229
Side Airbag
Sensor Assy RHAirbag
Sensor
Assy
Center
ESR
VUPR
SSR+
Floor Wire
D
CBA
SSR-
A18
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
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2005 HIGHLANDER REPAIR MANUAL (RM1144U)
5 CHECK FLOOR WIRE(TO B+)
(a) Connect the negative (-) terminal cable to the battery,
and wait for at least 2 seconds.
(b) Turn the ignition switch to the ON position.
(c) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester connectionConditionSpecified condition
A18-17 (VUPR) -
Body groundIgnition switch ONBelow 1 V
A18-15 (ESR) -
Body groundIgnition switch ONBelow 1 V
A18-16 (SSR+) -
Body groundIgnition switch ONBelow 1 V
A18-13 (SSR-) -
Body groundIgnition switch ONBelow 1 V
NG REPAIR OR REPLACE FLOOR WIRE
OK
6 CHECK FLOOR WIRE(SHORT)
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the bat-
tery, and wait for at least 90 seconds.
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester connectionConditionSpecified condition
A18-17 (VUPR) -
A18-15 (ESR)Always1 MW or Higher
A18-16 (SSR+) -
A18-13 (SSR-)Always1 MW or Higher
NG REPAIR OR REPLACE FLOOR WIRE
OK

H10600 H01065H01012
H01066H10600 H01065H01012
H01066H42115
Airbag
Sensor
Assy
Center
DLC3
CG TCDTC B1140/32
DTC B1141/33
Side
Airbag
Sensor
Assy LH
05-1326
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1516 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
7 CHECK SIDE AIR BAG SENSOR ASSY RH
(a) Connect the connector to the airbag sensor assy center.
(b) Interchange the side airbag sensor assy RH with LH and
connect the connectors to them.
(c) Connect the negative (-) terminal cable to the battery,
and wait for at least 2 seconds.
(d) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(e) Clear the DTCs stored in memory (see page 05-1215).
(f) Turn the ignition switch to the LOCK position.
(g) Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
(h) Check the DTCs (see page 05-1215).
Result:
NG: ADTC B1140/32 is output.
NG: BDTC B1141/33 is output.
OKDTC B1140/32 and B1141/33 are not
output.
NG:A REPLACE AIR BAG SENSOR ASSY CENTER
(SEE PAGE 60-53)
NG:B REPLACE SIDE AIR BAG SENSOR ASSY RH
(SEE PAGE 60-57)
OK
USE SIMULATION METHOD TO CHECK

H43054
S16
Side Airbag Sensor Assy LHAirbag Sensor Assy Center
W
G
R ESL
VUPL
SSL+
SSL-1
4
3
2A1618
16
17
20 B
ESL
VUPL
SSL+
SSL- A16
A16
A16 (*1)
(*1)
(*1)
(*1)
*1: w/ Curtain Shield Airbag
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05-1327
1517 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC B1141/33 SIDE AIRBAG SENSOR ASSY (LH)
MALFUNCTION
CIRCUIT DESCRIPTION
The side airbag sensor assy LH consists of the safing sensor, diagnosis circuit and lateral deceleration sen-
sor, etc.
It receives signals from the lateral deceleration sensor, judges whether or not the SRS must be activated,
and detects diagnosis system malfunction.
DTC B1141/33 is recorded when occurrence of a malfunction in the side airbag sensor assy LH is detected.
DTC No.DTC Detecting ConditionTrouble Area
B1141/33
Side airbag sensor assy LH malfunction

Side airbag sensor assy LH

Floor wire No.2

Airbag sensor assy center
WIRING DIAGRAM
05IVL-01