Page 704 of 2572
'05 HIGHLANDER_U (L/O 0409)
402
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
2. Pull the bulb out of the bulb base
and install a new bulb.
If the connector is tight, wiggle it.3. Insert the bulb base into the mount-
ing hole by turning it clockwise.
Aiming is not necessary after replacing
the bulb. When aiming adjustment is nec-
essary, contact your Toyota dealer.If any of the following lights burns out,
contact your Toyota dealer.
Front fog lights
Front turn signals/parking and front
side marker lights
Rear side marker lights
NOTICE
Do not try to replace any of the light
bulbs mentioned above by yourself.
You may damage the vehicle.
ÐFront fog, front turn signal/
parking and front side marker,
and rear side marker lights
Page 1393 of 2572
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)(From August, 2004)
05-45
235 Author: Date:
Hand-held Tester DisplayDiagnostic Note Normal Condition* Measurement Item/Range
(Display)
AF FT B1 S1
Short term fuel trim associated with bank
1, sensor 1/
Minimum: 0, Maximum: 1.999
Value less than 1 (0.000 to
0.999) = LEAN
Stoichiometric Air-Fuel Ratio=1
Value greater than 1 (1.001 to
1.999) = RICH
-
FUEL SYS #1
Fuel system status (Bank 1) /
OL or CL or OL DRIVE or
OL FAULT or CL FAULT
Idling after warming up: CL
OL (Open Loop) : Has not yet sa-
tisfied conditions to go closed
loop
CL (Closed Loop) : Using heated
oxygen sensor(s) as feed back
for fuel control
OL DRIVE: Open loop due to
driving conditions (fuel enrich-
ment)
OL FAULT: Open loop due to de-
tected system fault
CL FAULT: Closed loop but one
of heated oxygen sensors, which
is used for fuel control, is mal-
functioning
FC IDLIdle fuel cut/ ON or OFFFuel cut operation: ON
FC IDL = ON when throttle valve
is fully closed and engine speed is
over 1,500 rpm
MILMIL status/ ON or OFFMIL ON: ON-
STARTER SIGStarter signal/ ON or OFFCranking: ON-
A/C SIGA/C signal/ ON or OFFA/C ON: ON-
PNP SW [NSW]PNP switch signal/ ON or OFFP or N position: ON-
ELECT LOAD SIGElectrical load signal/ ON or OFFDefogger switch ON: ON-
STOP LIGHT SWStop lamp switch/ ON or OFFBrake pedal depressed: ON
Brake pedal released: OFF-
PS OIL PRESS SWPower steering signal/ ON or OFF
While turning steering wheel: ON
While not turning steering wheel:
OFFIdle-up control is performed when
PS is ON
PS SIGNALPower steering signal/
ON or OFFWhen steering wheel is turnedThis signal is usually ON until Igni-
tion switch is turned OFF
FUEL PUMP / SPDFuel pump / speed status /
ON/H or OFF/M,LIdling: ON-
A/C MAG CLUTCHA/C magnet clutch status /
ON or OFFA/C magnet clutch ON: ON-
EVAP VSVEVAP VSV status control /
ON or OFFVSV operating: ONEVAP VSV is controlled by ECM
(ground side duty control)
VVT CTRL B1VVT control status (Bank 1) /
ON or OFFVVT system operation: ON-
IGNITIONIgnition counter/ Minimum: 0,
Maximum: 4000 to 400-
CYL #1, #2, #3, #4Misfire ratio of cylinder 1 to 4/
Minimum: 0 %, Maximum: 50 %0 %This item is displayed in only idling
MISFIRE LOADEngine load for first misfire range/
Minimum: 0 g/rev, Maximum: 3.98 g/rev.Misfire 0: 0 g/rev.'
MISFIRE RPMEngine RPM for first misfire range/
Minimum: 0 rpm, Maximum: 6,375 rpmMisfire 0: 0 rpm'
FC TAUFuel Cut TAU: Fuel cut during very light
load/ ON or OFFFuel cut operating: ON
Fuel cut is being performed under
very light load to prevent engine
combustion from becoming incom-
plete
CHECK MODECheck mode/ ON or OFFCheck mode ON: ONSee page 05-40
Page 1399 of 2572
- DIAGNOSTICSSFI SYSTEM (3MZ-FE)(From August, 2004)
05-409
599 Author: Date:
Hand-held Tester DisplayDiagnostic Note Normal Condition * Measurement Item/Range
(Display)
FUEL SYS #1
Fuel system status (Bank 1) /
OL or CL or OL DRIVE or
OL FAULT or CL FAULT
Idling after warming up: CL
OL (Open Loop): Has not yet sa-
tisfied conditions to go closed
loop
CL (Closed Loop): Using heated
oxygen sensor(s) as feed back
for fuel control
OL DRIVE: Open loop due to
driving conditions (fuel enrich-
ment)
OL FAULT: Open loop due to de-
tected system fault
CL FAULT: Closed loop but one
of heated oxygen sensors, which
is used for fuel control, is mal-
functioning
FUEL SYS #2
Fuel system status (Bank 2) /
OL or CL or OL DRIVE or
OL FAULT or CL FAULT
Idling after warming up: CL
OL (Open Loop): Has not yet sa-
tisfied conditions to go closed
loop
CL (Closed Loop): Using heated
oxygen sensor(s) as feed back
for fuel control
OL DRIVE: Open loop due to
driving conditions (fuel enrich-
ment)
OL FAULT: Open loop due to de-
tected system fault
CL FAULT: Closed loop but one
of heated oxygen sensors, which
is used for fuel control, is mal-
functioning
FC IDLFuel cut idle/ ON or OFFFuel cut operation: ON
FC IDL = ON when throttle valve
is fully closed and engine speed is
over 1,500 rpm
MILMIL status/ ON or OFFMIL ON: ON'
STARTER SIGStarter signal/ ON or OFFCranking: ON'
A/C SIGA/C signal/ ON or OFFA/C ON: ON'
PNP SW [NSW]PNP switch signal/ ON or OFFP or N position: ON'
ELECT LOAD SIGElectrical load signal/
ON or OFFTaillamp switch ON: ON
Defogger switch ON: ON'
STOP LIGHT SWStop light switch/
ON or OFFBrake pedal depressed: ON
Brake pedal released: OFF'
PS OIL PRESS SWPower steering oil pressure switch
signal/ ON or OFF
While turning the steering wheel:
ON
While not turning the steering
wheel: OFF
Idle-up control is performed when
PS is ON
PS SIGNALPower steering signal/
ON or OFFWhen steering wheel is turnedThis signal is usually ON until the
Ignition switch is turned OFF
INTAKE CTL VSV1VSV status for intake control (bank
1)/ ON or OFFVSV operation: ON'
INTAKE CTL VSV 2VSV status for intake control (bank
2)/ ON or OFFVSV operation: ON'
FUEL PUMP / SPDFuel pump/speed status/
ON/H or OFF/M, LIdling: ON'
A/C MAG CLUTCHA/C magnet clutch status/
ON or OFFA/C magnet clutch ON: ON'
Page 1528 of 2572
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
Page 1529 of 2572
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)
Page 1530 of 2572
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
Page 1537 of 2572
E74079
Instrument Panel J/B
Body ECU
TAILLIGHT Relay
FOG LIGHT Relay
F2
Front Fog Lamp RH
F1
Front Fog Lamp LH
F7
FL BlockTRLY
FFGO TAIL
FR FOG
W-B
R-W R-W R-W
FL MAIN
BatteryALT4
12
53 1
1A BSB
V7
B9
6
B9
W
2
1
EG EA 12
122
1J
7
1B
W-B1J
A
A
J1
J/CJ3
J/C 12
35 05-1582
- DIAGNOSTICSLIGHTING SYSTEM
1772 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
FRONT FOG LIGHT CIRCUIT
CIRCUIT DESCRIPTION
The multiplex network body ECU controls the FOG relay when a signal is received from the headlamp dim-
mer switch assy.
WIRING DIAGRAM
05IQB-01
Page 1538 of 2572
E74263
Multiplex Network Body ECU
Connector Front View:
B9
B9-7
B9-6
- DIAGNOSTICSLIGHTING SYSTEM
05-1583
1773 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
HINT:
Inspect if the taillamp system is normal before performing this procedure.
1 INSPECT MULTIPLEX NETWORK BODY ECU
(a) Disconnect the B9 connector from the multiplex network body ECU.
(b) Using a service wire, connect B9-6 and B9-7 of the wire harness side and body ground.
OK: Front fog lamp comes on.
NG Go to step 2
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-1538)
