TOYOTA HIGHLANDER 2001 Service Repair Manual

B31124
Wire Harness Side
K4
Unlock
Warning Switch
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
05-2035
2225 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK WIRE HARNESS (UNLOCK WARNING SWITCH ASSY - BODY GROUND)
(a) Disconnect the K4 switch connector.
(b) Measure the resistance between the wire harness side
connector and body ground.
Standard:
Tester ConnectionSpecified Condition
(K4-1) - Body groundBelow 1 W
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
CHECK THEFT WARNING ECU ASSY

05ITB-02
A92556
05-16
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
206 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
LIST OF DISABLE A MONITOR
HINT:
The table below shows the ECM monitoring status for the components listed in the top of the table when
the DTCs on the left of the table are set.

A92557
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-17
207 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)

A92558
05-18
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
208 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Note *1: Without input speed sensor
Note *2: With input speed sensor

A92559
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-19
209 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Note *1: Without input speed sensor
Note *2: With input speed sensor

A92560
05-20
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
210 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Note *1: Without input speed sensor
Note *2: With input speed sensor

A92561
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-21
211 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Note *1: Without input speed sensor
Note *2: With input speed sensor

E74080
Body ECU
Passenger Side J/B
C13
Combination Switch
Fog
Light SW
Light
Control SW
Dimmer SWFFOG
HU
HF
TAIL
HEAD
A
OFF
ON
OFF
TAIL
HEAD
AUTO
LOW
HIGH
FLASHBR
Y
O
V
LG
P 6
4F 2
4N Y
11
7
81413 12
1017
L16B10
W-B10
14
B10
15
B10
18
B10
17
B10
16
B10
IA
LFG BFG HU HL HF T H EL A
05-1586
- DIAGNOSTICSLIGHTING SYSTEM
1776 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
LIGHT CONTROL SWITCH CIRCUIT
CIRCUIT DESCRIPTION
This circuit detects the state of the headlamp dimmer switch.
WIRING DIAGRAM
05IQC-01

E74263
Multiplex Network Body ECU
Connector Front View:
B10
B10-10
B10-14
B10-15
B10-16 B10-17 B10-18
- DIAGNOSTICSLIGHTING SYSTEM
05-1587
1777 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 INSPECT MULTIPLEX NETWORK BODY ECU
(a) Disconnect the B10 connector from the multiplex network body ECU.
(b) Measure the voltage according to the value(s) in the table below.
Standard:
Tester connectionConditionSpecified condition
B10-10 - Body groundFront fog light switch OFF " ON10 kW or higher " Below 1 W
B10-14 - Body groundHeadlamp Dimmer switch LOW " HIGH10 kW or higher " Below 1 W
B10-15 - Body groundHeadlamp Dimmer switch LOW " FLASH10 kW or higher " Below 1 W
B10-16 - Body groundLight control switch OFF " AUTO10 kW or higher " Below 1 W
B10-17 - Body groundLight control switch OFF " HEAD10 kW or higher " Below 1 W
B10-18 - Body groundLight control switch OFF " TAIL10 kW or higher " Below 1 W
NG Go to step 2
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-1538)

E11948
Connector Front View:
C13
05-1588
- DIAGNOSTICSLIGHTING SYSTEM
1778 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 INSPECT HEADLAMP DIMMER SWITCH ASSY
(a) Inspect light control switch (when headlamp is malfunc-
tioning).
(1) Measure the resistance according to the value(s) in
the table below.
Standard:
Tester connectionConditionSpecified condition
12 - 16
13 - 16
14 - 16
OFF10 kW or higher
14 - 16TAILBelow 1 W
13 - 16
14 - 16HEADBelow 1 W
12 - 16AUTOBelow 1 W
(b) Inspect headlamp dimmer switch (when headlamp is mal-
functioning).
(1) Measure the resistance according to the value(s) in
the table below.
Standard:
Tester connectionConditionSpecified condition
16 - 17LOWBelow 1 W
7 - 16HIGHBelow 1 W
7 - 16
8 - 16FLASHBelow 1 W
(c) Inspect front fog light switch (when fog lamp is malfunc-
tioning).
(1) Measure the resistance according to the value(s) in
the table below.
Standard:
Tester connectionConditionSpecified condition
10 - 11OFF10 kW or higher
10 - 11ONBelow 1 W
NG REPLACE HEADLAMP DIMMER SWITCH ASSY
(SEE PAGE 65-25)
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR