radio TOYOTA T100 1996 Factory Service Manual

Downloaded from www.Manualslib.com manuals search engine IN−14
− INTRODUCTIONFOR ALL OF VEHICLES
14 Author: Date:
1996 TOYOTA T100 (RM449U)
3. IF VEHICLE IS EQUIPPED WITH MOBILE COMMUNICATION SYSTEM
For vehicles with mobile communication systems such as two−way radios and cellular telephones, observe
the following precautions.
(1) Install the antenna as far as possible away from the ECU and sensors of the vehicle’s electronic
system.
(2) Install the antenna feeder at least 20 cm (7.87 in.) away from the ECU and sensors of the ve-
hicle’s electronics systems. For details about ECU and sensors locations, refer to the section on
the applicable component.
(3) Avoid winding the antenna feeder together with the other wiring as much as possible, and also
avoid running the antenna feeder parallel with other wire harnesses.
(4) Confirm that the antenna and feeder are correctly adjusted.
(5) Do not install powerful mobile communications system.

Downloaded from www.Manualslib.com manuals search engine − SERVICE SPECIFICATIONSBODY ELECTRICAL
SS−79
253 Author: Date:
1996 TOYOTA T100 (RM449U) 7 − Ground (Ignition switch position: ACC or ON)
(Radio switch and cassette OFF)
No voltage
7 − Ground (Ignition switch position: ACC or ON)
(Radio switch and cassette ON)Battery positive voltage
8 − Ground (Ignition switch position: LOCK)No voltage
8 − Ground (Ignition switch position: ACC or ON)
(Radio switch ON and cassette ON)No voltage
8 − Ground (Ignition switch position: ACC or ON)
(Radio switch ON and cassette OFF)Battery positive voltage
4 − Ground (Ignition switch position: LOCK or ACC)No voltage
4 − Ground (Ignition switch position: ON)Battery positive voltage

Downloaded from www.Manualslib.com manuals search engine SF0AF−04
− MFI (3RZ−FE)MFI SYSTEM
MF−1
953 Author: Date:
1996 TOYOTA T100 (RM449U)
MFI SYSTEM
PRECAUTION
1. BEFORE WORKING ON FUEL SYSTEM, DISCON-
NECT NEGATIVE (−) TERMINAL CABLE FROM BAT-
TERY
HINT:
Any diagnostic trouble code retained by the ECM will be erased
when the battery negative (−) terminal cable is removed from
the battery.
Therefore, if necessary, read the diagnostic trouble code(s) be-
fore removing the negative (−) terminal cable from the battery.
2. DO NOT SMOKE OR WORK NEAR AN OPEN FLAME
WHEN WORKING ON FUEL SYSTEM
3. KEEP GASOLINE AWAY FROM RUBBER OR LEATH-
ER PARTS
4. MAINTENANCE PRECAUTIONS
(a) Precaution when the connecting gauge.
Use battery as the power source for the timing light, etc.
(b) In the event of engine misfire, these precautions should
be taken.
(1) Check proper connection of battery terminals, etc.
(2) Handle high−tension cords carefully.
(3) After repair work, check that the ignition coil termi-
nals and all other ignition system lines are recon-
nected securely.
(4) When cleaning the engine compartment, be espe-
cially careful to protect the electrical system from
water.
(c) Precautions when the handling heated oxygen sensors.
(1) Do not allow oxygen sensor to drop or hit against an
object.
(2) Do not allow the sensor to come into contact with
water.
If Vehicle is Equipped with Mobile Radio System (ham, cb, etc.)
If the vehicle is equipped with a mobile communication system,
refer to the precaution in the IN section.
5. AIR INDUCTION SYSTEM
(a) Separation of the engine oil dipstick, oil filler cap, PCV
hose, etc. may cause the engine to run out of tune.
(b) Disconnection, looseness or cracks in the parts of the air
induction system between the throttle body and cylinder
head will cause air suction and cause the engine to run
out of tune.

Downloaded from www.Manualslib.com manuals search engine SF1QM−01
− SFI (5VZ−FE)SFI SYSTEM
SF−1
1007 Author: Date:
1996 TOYOTA T100 (RM449U)
SFI SYSTEM
PRECAUTION
1. BEFORE WORKING ON FUEL SYSTEM, DISCON-
NECT NEGATIVE (−) TERMINAL CABLE FROM BAT-
TERY
HINT:
Any diagnostic trouble code retained by the computer will be
erased when the negative (−) terminal cable is removed from
the battery.
Therefore, if necessary, read the diagnosis before removing the
negative (−) terminal cable from the battery.
2. DO NOT SMOKE OR WORK NEAR AN OPEN FLAME
WHEN WORKING ON FUEL SYSTEM
3. KEEP GASOLINE AWAY FROM RUBBER OR LEATH-
ER PARTS
4. MAINTENANCE PRECAUTIONS
(a) In the event of engine misfire, these precautions should
be taken.
(1) Check proper connection to battery terminals, etc.
(2) After repair work, check that the ignition coil termi-
nals and all other ignition system lines are recon-
nected securely.
(3) When cleaning the engine compartment, be espe-
cially careful to protect the electrical system from
water.
(b) Precautions when the handling heated oxygen sensors.
(1) Do not allow the oxygen sensor to drop or hit
against an object.
(2) Do not allow the sensor to come into contact with
water.
If Vehicle is Equipped with Mobile Radio System (ham, cb, etc.)
If the vehicle is equipped with a mobile communication system,
refer to the precaution in the IN section.
5. AIR INDUCTION SYSTEM
(a) Separation of the engine oil dipstick, oil filler cap, PCV
hose, etc. may cause the engine to run out of tune.
(b) Disconnection, looseness or cracks in the parts of the air
induction system between the throttle body and cylinder
head will allow air suction and cause the engine to run out
of tune.

Downloaded from www.Manualslib.com manuals search engine BE01E−07
− BODY ELECTRICALBODY ELECTRICAL SYSTEM
BE−1
1801 Author: Date:
1996 TOYOTA T100 (RM449U)
BODY ELECTRICAL SYSTEM
PRECAUTION
Take care to observe the following precautions when performing inspections or removal and replacement
of body electrical related parts.
1. LIGHTING SYSTEM
Halogen bulbs have pressurized gas inside and require special handling.
They can burst or scatter if scratched or dropped. Hold a bulb only by its plastic or metal case.
Don’t touch the glass part of a bulb with bare hands.
2. SRS (SUPPLEMENTAL RESTRAINT SYSTEM)
The TOYOTA T100 is equipped with an SRS (Supplemental Restraint System) such as the driver airbag.
Failure to carry out service operations in the correct sequence could cause the SRS to unexpectedly deploy
during servicing, possibly leading to a serious accident. Before servicing (including removal or installation
of parts, inspection or replacement), be sure to read the precautionary notices in the RS section.
3. AUDIO SYSTEM
If the battery negative (−) terminal is disconnected, the preset AM, FM 1 and FM 2 stations stored in
memory are erased, so be sure to note the stations and reset them after the battery terminal is recon-
nected.
If the battery negative (−) terminal is disconnected, the ”ANTI−THEFT SYSTEM” will operate when the
terminal is reconnected, but the radio, tape player and CD player will not operate. Be sure to input the
correct ID number so that the radio, tape player and CD player can be operated again.
4. MOBILE COMMUNICATION SYSTEM
If the vehicle is equipped with a mobile communication system, refer to precautions in the IN section.

Downloaded from www.Manualslib.com manuals search engine − BODY ELECTRICALBODY ELECTRICAL SYSTEM
BE−9
1996 TOYOTA T100 (RM449U)
POWER DOOR LOCK CONTROL SYSTEM
SymptomSuspect AreaSee page
”Door lock control system” does not operate (All)
1. GAUGE Fuse (Junction Block No.1)
2. POWER WINDOW Fuse (Junction Block No.1)
3. Door Lock Control Relay
4. Wire Harness
5. Other PartsBE−50
BE−50
BE−51
−
−
Malfunction in Door Lock / Unlock
(Using door manual switch)
1. Door Lock Manual Switch
2. Wire Harness
3. Door Lock Control Relay
4. Other PartsBE−51
−
BE−51
−
Mulfunction in Door Lock / Unlock
(Using door manual switch and key)1. Wire Harness
2. Other Parts−
−
Mulfunction in Door Lock / Unlock
(Using Key)
1. Door Key Lock and Unlock Switch
2. Wire Harness
3. Door Lock Control Relay
4. Other PartsBE−51
−
BE−51
−
Fault in 2 − Operation unlock function of Driver’s side door key
Lock and Unlock switch
1. Door Key Lock and Unlock Switch
2. Wire Harness
3. Door Lock Control Relay
4. Other PartsBE−51
−
BE−51
−
Fault in key confine prevention operation
1. Key Unlock Warning Switch
2. Door Courtesy Switch
3. Door Lock Switch
4. Wire Harness
5. Door Lock Control Relay
6. Other PartsBE−12
BE−25
BE−51
−
BE−51
−
Only one door lock does not operate1. Door Lock Motor
2. Wire HarnessBE−51
−
POWER MIRROR CONTROL SYSTEM
SymptomSuspect AreaSee page
Power mirror on each side does not operate at all
1. RADIO Fuse (Junction Block No.1)
2. Mirror Switch
3. Mirror Motor (Up/Down or Left/Right Control)
4. Wire HarnessBE−56
BE−57
BE−57
−
Left or Right power mirror does not operate at all
1. Mirror Switch
2. Mirror Motor (Up/Down or Left/Right Control)
3. Wire HarnessBE−57
BE−57
−
Up/Down Control of left or right power mirror does not operate1. Mirror Motor (Up/Down Control)
2. Wire HarnessBE−57
−
Left/Right control of left or right power mirror does not operate1. Mirror Motor (Left/Right Control)
2. Wire HarnessBE−57
−

Downloaded from www.Manualslib.com manuals search engine Z15842
Outer Rear View Mirror
 Mirror Motor
Junction Block No.1
 RADIO Fuse
Mirror Switch
BE03G−04
BE−56
− BODY ELECTRICALPOWER MIRROR CONTROL SYSTEM
1856 Author: Date:
1996 TOYOTA T100 (RM449U)
POWER MIRROR CONTROL SYSTEM
LOCATION

Downloaded from www.Manualslib.com manuals search engine The radio wave bands used in radio broadcasting are as follows:
Frequency
Designation
Radio wave
Modulation method
LF: Low frequency MF: Medium Frequency HF: High Frequency VHF: Very High FrequencyAmplitude modulationFrequency modulation 30 kHz
300 kHz3 MHz 30 MHz 300 MHz
LF
MFHFVHF
AM FM
BE1PI−02
BE2818
FM (Stereo)
FM (Monaural)
AM
− BODY ELECTRICALAUDIO SYSTEM
BE−59
1859 Author: Date:
1996 TOYOTA T100 (RM449U)
AUDIO SYSTEM
DESCRIPTION
1. RADIO WAVE BAND
2. SERVICE AREA
There are great differences in the size of the service area for AM
and FM monaural. Sometimes FM stereo broadcasts cannot be
received even though AM comes in very clearly at the same
location.
Not only does FM stereo have the smallest service area, but it
also picks up static and other types of interference (”noise”)
easily if the vehicle is moving in a fringe area.
3. RECEPTION PROBLEMS
Besides the problem by static, there are also the problems
called ”fading”, ”multipath” and ”fade out”. These problems are
caused not by electrical noise but by the nature of the radio
waves propagations.

Downloaded from www.Manualslib.com manuals search engine BE2819
Fading
Ionosphere
BE2820
Multipath
BE2821
Fade Out
I03092
Example :
Pinch RollerHead
Capstan
BE−60
− BODY ELECTRICALAUDIO SYSTEM
1860 Author: Date:
1996 TOYOTA T100 (RM449U)
Fading
Besides electrical interference, AM broadcasts are
also susceptible to other types of interference, es-
pecially at night. This is because AM radio waves
bounce off the ionosphere at night.
These radio waves then interfere with the signals
from the same transmitter that reach the vehicle’s
antenna directly. This type of interference is called
”fading”, because the reflected indirect signal
(which is off−phase in relation to the direct wave)
sporadically strengthen or weaken the resultant sig-
nal at reception point.
Multipath
One type of interference caused by bouncing of ra-
dio waves off of obstructions is called ”multipath”.
Multipath occurs when a signal from the broadcast
transmitter antenna bounces off buildings, moun-
tains and interference with the signal that is re-
ceived directly.
Fade Out
Because FM radio waves are of higher frequencies
than those of AM, they bounce off buildings, moun-
tains, and other obstructions. For this reason, FM
signals often seem to gradually disappear or fade
away as the vehicle goes behind a building or other
obstruction. This is called ”fade out”.
4. Tape player / Tape head cleaning:
MAINTENANCE OF TAPE PLAYER
Using a moist−type cleaning tape, clean the head surface,
pinch rollers and capstans (Never use ”abrasive” type cas-
sette−shaped cleaner.).

Downloaded from www.Manualslib.com manuals search engine BE27H−01
BE−62
− BODY ELECTRICALAUDIO SYSTEM
1996 TOYOTA T100 (RM449U)
TROUBLESHOOTING
NOTICE:
When replacing the internal mechanism (computer part) of the audio system, be careful that no part
of your body or clothing comes in contact with the terminals of the leads from the IC, etc. of the re-
placement part (spare part).
HINT:
This inspection procedure is a simple troubleshooting which should be carried out on the vehicle during sys-
tem operation and was prepared on the assumption of system component troubles (except for the wires and
connectors, etc.).
Always inspect the trouble taking the following items into consideration.
Open or short circuit of the wire harness
Connector or terminal connection fault
For audio systems with anti−theft system, troubleshooting items marked (*) indicate that ”Trou-
bleshooting for ANTI−THEFT SYSTEM” should be carried out first.
ProblemNo.
RadioNo power coming in.*1
Power coming in, but radio not operating.*2
Noise present, but AM − FM not operating.3
Either speaker does not work.4
Either AM or FM does not work.5
Reception poor (Volume faint).5
Few preset tuning bands.5
Sound quality poor.6
Cannot set station select button.6
Preset memory disappears.7
Tape PlayerCassette tape cannot be inserted.8
Cassette tape inserts, but no power.*9
Power coming in, but tape player not operating.10
Either speaker does not work.11
Sound quality poor (Volume faint).12
Tape jammed, malfunction with tape speed or auto−reverse.13
APS, SKIP, RPT buttons not operating.14
Cassette tape will not eject.*15
AntennaAntenna does not fully extened or fully retract.16
Antenna − related.17
NoiseNoise produced by vibration or shock while driving.18
Noise produced when engine starts.19