Page 2089 of 2572

Inspector 's
Name:
Customer 's Name
Date Vehicle
Brought InProduction DateVIN
Licence No.
Odometer Reading/ /
/ /
Date Problem First Occurred
Frequency Problem Occurs/ /
ContinuousIntermittent ( times a day)
TRAC does not operate. (Wheels spin when starting rapidly.)
DisplaysDoes not Display
DTC Check1st Time
2nd TimeNormal System Code
Trouble Code (Code )
Normal System CodeTrouble Code (Code )
Symptomskm
miles
Light Abnormal TRAC OFF Indicator
Light Abnormal SLIP Indicator
Remains ONDoes not Come On
Check Item
NormalTrouble Code (Code )
NormalTrouble Code (Code )
ABS Warning Light
Malfunction
Indicator Light TRAC & VSC Check Sheet
Remains ONDoes not Come On
VSC does not operate. (Wheels sideslip at the time of sharp turning.)
VSC Warning
Indicator Abnormal
Skid Control
Buzzer AbnormalDoes not SoundSounds
VSC/TRC OFF SW
SYSTEMFreeze Frame Data
SHIFT POSITION
YAW RATON
OFF
VSC/TRAC
P, NR
D
deg/s
VFAIL
23
4L
MAS CYL PRESS
THROTTLE
MAS PRESS GRADE
G (RIGHT&LEFT)
G (BACK&FORTH)
STEERING ANG
deg
deg
MPa/s
G
G 05-764
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
954 Author: Date:
Page 2090 of 2572

051ZG-1 1
SFI SYSTEM Check Sheet
Customer's Name
Date Vehicle
Brought in
VIN
Production Date
Licence Plate No.Odometer Reading
km
miles
Problem Symptoms
Engine Does
Not Start
Difficult to
Start
Poor Idling
Poor
Driveability
Engine Stall
Other
Engine does not crankNo initial combustionNo complete combustion
Engine cranks slowly
Other
Incorrect first idleIdling rpm is abnormalHigh ( rpm)Low ( rpm)
Rough idling
Other
HesitationBackfireMuffler explosion (after-fire)Surging
Knocking
Other
Soon after startingAfter accelerator pedal depressed
After accelerator pedal released
During A/C operation
Shifting from N to D
Other
Date Problem
Occurred
Problem Frequency
Condition When
Problem Occurs
Weather
Engine Operation
Engine Temp. Place Outdoor
TemperatureConstant
Sometimes ( times per day/month)Once only
Other
Fine
CloudyRainySnowyVarious/Other
Hot
Warm Cool
HighwaySuburbsInner CityUphillDownhill
Rough road
Other
Cold
Warming upAfter Warming upAny temp.Other
Starting
Just after starting ( min.)IdlingRacing
Driving
Constant speedAccelerationDeceleration
A/C switch ON/OFF
Other
Condition of Malfunction Indicator Lamp
(MIL)Remains onSometimes lights up Does not light up
Normal Malfunction code(s) (code )
Freeze frame data ( )
NormalMalfunction code(s) (code )
Freeze frame data ( )
Normal Mode
(Pre-check)
Check Mode DTC InspectionInspector's
Name
Cold (approx. C/ F)
05-8
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
198 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
CUSTOMER PROBLEM ANALYSIS CHECK
Page 2091 of 2572
260H9-02
G29259
- FRONT SUSPENSIONSHOCK ABSORBER ASSY FRONT LH
26-17
2938 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DISPOSAL
HINT:
Dispose of the RH side by following the same procedures as with the LH side.
1. DISPOSE OF SHOCK ABSORBER ASSY FRONT LH
(a) Fully extend the shock absorber rod.
(b) Using a drill, make a hole in the cylinder as shown in the
illustration to discharge the gas inside.
CAUTION:
Be careful when drilling because shards of metal may
fly about. Always use the proper safety equipment.
The gas is colorless, odorless and non-poisonous.
Page 2092 of 2572
740EC-01
- SLIDING ROOF/CONVERTIBLESLIDING ROOF SYSTEM
74-5
3708 Author: Date:
DATA LIST/ACTIVE TEST
1. CHECK USING INTELLIGENT TESTER
(a) Connect the intelligent tester to the DLC3.
(b) Select the DATA LIST mode on the intelligent tester.
Sliding roof ECU:
ItemSwitch conditionStandard value
OPEN SWPressed " UnpressedON/OFF
CLOSE SWPressed " UnpressedON/OFF
Position detection SW 1Do sliding and tilting operationON/OFF
Position detection SW 2Do sliding and tilting operationON/OFF
HALL IC conditionDo sliding and tilting operationNormal/ Abnormal
HALL IC out putDo sliding and tilting operationON/OFF
IGIgnition Switch ON " OFFON/OFF
IG line signalIgnition Switch ON " OFFON/OFF
Operation possible after key-OFFIgnition Switch ON " OFFON/OFF
(c) The active test will indicate if the part is normal or malfunctioning.
Sliding roof ECU:
ItemCondition
Sliding RoofCLOSE/ UP
Sliding RoofOPEN/DOWN
Page 2093 of 2572

05IRH-01
30 kHz 300 kHz 3 MHz 30 MHz 300 MHz
LF MF HF VHF
AM FM
Frequency modulation Frequency
Designation
Radio wave
Modulation Amplitude modulation
BE2818
FM (Stereo)
FM (Monaural)
AM
BE2819
PhasingIonosphere
- DIAGNOSTICSAUDIO SYSTEM
05-161 1
1801 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
AUDIO SYSTEM
DESCRIPTION
1. RADIO WAVE BAND
The radio wave bands used in radio broadcasting are as follows:
LF: Low Frequency
MF: Medium Frequency
HF: High Frequency
VHF: Very High Frequency
2. SERVICE AREA
(a) There is a great difference in the size of the service areas
for AM and FM broadcasting. Sometimes an FM stereo
broadcast cannot be received even though AM can be re-
ceived very clearly.
FM stereo has the smaller service area, it also picks up
static and other types of interference (ºnoiseº) easily.
3. RECEPTION PROBLEMS
HINT:
Besides the problem of static, there are other problems, such as ºphasingº, ºmultipathº and ºfade outº. These
problems are caused not by electrical noise but by the nature of the radio waves themselves.
(a) Phasing
Besides electrical interference, AM broadcasts are also
susceptible to other types of interference, especially at
night. This is because AM radio waves bounce off the ion-
osphere at night. These radio waves then interfere with
the signals that reach the vehicle's antenna directly from
the same transmitter. This type of interference is called
ºphasingº.
Page 2094 of 2572

BE2820
Multipath
BE2821
Fade Out 05-1612
- DIAGNOSTICSAUDIO SYSTEM
1802 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
(b) Multipath
Interference caused by reflection of radio waves against
obstructions is called ºMultipathº. Multipath occurs when
radio signals emitted from the broadcast transmitter an-
tenna are reflected against tall buildings or mountains
and interferes with other signals which are to be received
directly.
(c) Fade Out
FM radio wave tends to be reflected against obstructions
such as tall buildings or mountains because FM frequen-
cy is higher than that of AM. For this reason, FM signals
often seem to gradually disappear or fade away as the ve-
hicle goes behind those obstructions. This phenomenon
is called ºfade outº.
4. NOISE PROBLEMS
(a) It is very important for technicians to understand a customer's claim about noise clearly. Use the follow-
ing table to diagnose the phenomena.
Radio waveCondition in which noise occursProbable cause
Noise occurs at a specific place.Strong possibility of foreign noise.
AMNoise occurs when listening to faint broadcasting.The same program may be broadcasted from some local sta-
tions. If the program is the same, one of those may be tuned
in.
Noise occurs only at night.Strong possibility of beat from a distant broadcasting.
FMNoise occurs at a specific place during driving.Strong possibility of multipath noise and phasing noise caused
by changes of FM frequency.
HINT:
If the condition when the noise occurs does not meet any of the above, find out the cause based on ºRecep-
tion Problemsº. Refer to the description about Multipath and Phasing mentioned previously.
5. COMPACT DISC PLAYER
(a) Compact Disc (hereafter called ºCDº) Players use a laser beam pick-up to read the digital signals re-
corded on the CD and reproduce analog signals of the music, etc. 4.7 in. (12 cm) and 3.2 in. (8 cm)
discs are available for the CD player.
HINT:
Never disassemble or apply oil to any part of the player unit. Do not insert any object other than a disc, into
the CD player.
NOTICE:
CD players use an invisible laser beam which could cause hazardous radiation exposure. Be sure
to operate the player correctly as instructed.
Page 2095 of 2572

N17398
Example:
HeadCapstan
Pinch Roller
BE4331
I39082
Radio Receiver Assy
(Resister 60 to 80 W)Multi-display
controller
Sub-assyAVC-LAN Example:
- DIAGNOSTICSAUDIO SYSTEM
05-1613
1803 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
6. MAINTENANCE
Tape Player/Head Cleaning:
(a) Raise the cassette door with your finger.
Using a pencil or similar object, push in the guide.
(b) Using a cleaning pen or cotton applicator soaked in clean-
er, clean the head surface, pinch rollers and capstans.
7. MAINTENANCE
CD Player/Disc Cleaning:
If the disc gets dirty, clean the disc by wiping the surface from
the center to outside in the radial directions with a soft cloth.
NOTICE:
Do not use a conventional record cleaner or anti-static pre-
servative.
8. AVC-LAN Description
(a) What is AVC-LAN?
AVC-LAN, an abbreviation for ºAudio Visual Communication Local Area Networkº, is a united standard
developed by the manufacturers in affiliation with Toyota Motor Corporation. This standard pertains
to audio and visual signals as well as switch and communication signals.
(b) Purpose:
Recently, car audio systems have rapidly developed and the functions vastly changed. The conven-
tional car audio system is being integrated with multi-media interfaces similar to those in navigation
systems. At the same time, customers are demanding higher quality from their audio systems. This
is merely an overview of the standardization background. The specific purposes are as follows.
(1) To solve sound problems, etc. caused by using components of different manufacturers through
signal standardization.
(2) To allow each manufacturer to concentrate on developing products they do best. From this, rea-
sonably priced products can be produced.
HINT:
If a +B or GND short is detected in the AVC-LAN circuit, communication is interrupted and the audio
system will stop functioning.
Page 2096 of 2572

05-1614
- DIAGNOSTICSAUDIO SYSTEM
1804 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
If an audio system is equipped with a navigation system, the multi-display unit acts as the master unit.
If the navigation system is not equipped, the audio head unit acts as the master unit instead. If the radio
and navigation assy is equipped, it is the master unit.
The radio receiver assy provides resistance to make communication possible.
The car audio system with an AVC-LAN circuit has a diagnostic function.
Each component has a specified number (3-digit) called a physical address. Each function has a num-
ber (2-digit) called a logical address.
9. Communication system outline
(a) Components of the audio system communicate with each other via the AVC-LAN.
(b) Radio receiver assy has enough resistance (60 to 80 W) necessary for transmitting the communication.
This is essential for communication.
(c) If a short circuit or open circuit occurs in the AVC-LAN circuit, communication is interrupted and the
audio system will stop functioning.
10. Diagnostic function outline
(a) The audio system has a diagnostic function (the result is indicated on the master unit).
(b) A 3-digit hexadecimal component code (physical address) is allocated to each component on the
AVC-LAN. Using this code, the component in the diagnostic function can be displayed.