TOYOTA HIGHLANDER 2001 Service Repair Manual

E74263
B11
B11-3 Multiplex Network Body ECU
Connector Front View:
- DIAGNOSTICSLIGHTING SYSTEM
05-1565
1755 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 PERFORM ACTIVE TEST USING HAND-HELD TESTER
(a) Connect the hand-held tester to the DLC3.
(b) Turn the ignition switch to the ON position and turn the hand-held tester main switch on.
(c) Select the item below in the ACTIVE TEST and then check the relay operation.
BODY NO.1 (MULTIPLEX NETWORK BODY ECU):
ItemTest DetailsDiagnostic Note
HEAD LIGHTHeadlamp relay ON/OFF-
OK: Headlamp (low) comes on.
BODY NO.1 (MULTIPLEX NETWORK BODY ECU):
ItemTest DetailsDiagnostic Note
DIMMER SIGDRL No.2 relay ON/OFF-
OK: Headlamp (high) comes on.
NG Go to step 2
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-1538)
2 INSPECT MULTIPLEX NETWORK BODY ECU
(a) Disconnect the B11 connector from the multiplex network body ECU.
(b) Using a service wire, connect B11-3 of the wire harness side and body ground.
OK: Headlamp (low) comes on.
NG Go to step 5
OK

E74263
B11
B11-2 Multiplex Network Body ECU
Connector Front View:
05-1566
- DIAGNOSTICSLIGHTING SYSTEM
1756 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 INSPECT MULTIPLEX NETWORK BODY ECU
(a) Using a service wire, connect B11-2 of the wire harness side and body ground.
OK: Headlamp (high) comes on (decrease mode).
NG Go to step 7
OK

E74263
B11-2 Multiplex Network Body ECU
Connector Front View:
B11
B11-3
- DIAGNOSTICSLIGHTING SYSTEM
05-1567
1757 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4 INSPECT MULTIPLEX NETWORK BODY ECU
(a) Using a service wire, connect B11-3 of the wire harness side and body ground.
(b) Using a service wire, connect B11-2 of the wire harness side and body ground.
OK: Headlamp (high) comes on.
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-1538)

E72985
Engine Room J/B
Connector Front View:
2G
2G-4
05-1568
- DIAGNOSTICSLIGHTING SYSTEM
1758 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
5 INSPECT ENGINE ROOM J/B
(a) Measure the voltage according to the value(s) in the table below.
Standard:
Tester connectionConditionSpecified condition
2G-4 - Body groundAlways10 to 14 V
NG Go to step 6
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE ROOM J/B - MULTIPLEX NETWORK
BODY ECU)

E72985
Engine Room J/B
Connector Front View:
2I
2I-1
- DIAGNOSTICSLIGHTING SYSTEM
05-1569
1759 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
6 CHECK HARNESS AND CONNECTOR(POWER SOURCE CIRCUIT)
(a) Disconnect the 2I connector from the engine room J/B.
(b) Measure the voltage according to the value(s) in the table below.
Standard:
Tester connectionConditionSpecified condition
2I-1 - Body groundAlways10 to 14 V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ENGINE ROOM J/B

E72985
Engine Room J/B
Connector Front View:
2B
2B-1
05-1570
- DIAGNOSTICSLIGHTING SYSTEM
1760 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
7 INSPECT ENGINE ROOM J/B
(a) Disconnect the 2B connector from the engine room J/B.
(b) Using a service wire, connect 2B-1 of the engine room J/B side and body ground.
OK: Headlamp (high) comes on (decrease mode).
NG Go to step 8
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE ROOM J/B - MULTIPLEX NETWORK
BODY ECU)

E72985
Engine Room J/B
Connector Front View:
2F
2F-5
2F-2
- DIAGNOSTICSLIGHTING SYSTEM
05-1571
1761 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
8 INSPECT ENGINE ROOM J/B
(a) Measure the voltage according to the value(s) in the table below.
Standard:
Tester connectionConditionSpecified condition
2F-2 - Body groundConnect 2B-1 and body ground10 to 14 V
2F-5 - Body groundConnect 2B-1 and body ground10 to 14 V
NG Go to step 9
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR (EACH OF HEADLAMP CIRCUIT)

E72985
Engine Room J/B
Connector Front View:
2B
2B-1
05-1572
- DIAGNOSTICSLIGHTING SYSTEM
1762 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
9 INSPECT ENGINE ROOM J/B
(a) Measure the voltage according to the value(s) in the table below.
Standard:
Tester connectionConditionSpecified condition
2B-1 - Body groundAlways10 to 14 V
NG Go to step 10
OK
REPLACE ENGINE ROOM J/B

E72985
Engine Room J/B
Connector Front View:
2I
2I-1
- DIAGNOSTICSLIGHTING SYSTEM
05-1573
1763 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
10 CHECK HARNESS AND CONNECTOR(POWER SOURCE CIRCUIT)
(a) Disconnect the 2I connector from the engine room J/B.
(b) Measure the voltage according to the value(s) in the table below.
Standard:
Tester connectionConditionSpecified condition
2I-1 - Body groundAlways10 to 14 V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ENGINE ROOM J/B

E74084
GeneratorECM
W-G21
E9RL
4
G1 L 05-1596
- DIAGNOSTICSLIGHTING SYSTEM
1786 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
GENERATOR SIGNAL CIRCUIT
CIRCUIT DESCRIPTION
The multiplex network body ECU receives an engine condition signal via a generator.
WIRING DIAGRAM
05CS6-03