TOYOTA T100 1996 Factory Service Manual

Downloaded from www.Manualslib.com manuals search engine Z15842
Outer Rear View Mirror
 Mirror Motor
Junction Block No.1
 RADIO Fuse
Mirror Switch
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− 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 BE03H−03
Z09299
Left/Light
Adjustment
Switch
Control Switch
Z04379
Z04380
− BODY ELECTRICALPOWER MIRROR CONTROL SYSTEM
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1996 TOYOTA T100 (RM449U)
INSPECTION
1. INSPECT MIRROR SWITCH CONTINUITY
Left side:
Switch positionTester connectionSpecified condition
UP3 − 4
1 − 8Continuity
DOWN1 − 3
4 − 8Continuity
LEFT3 − 4
1 − 7Continuity
RIGHT1 − 3
4 − 7Continuity
Right side:
Switch positionTester connectionSpecified condition
UP3 − 4
1 − 5Continuity
DOWN1 − 3
4 − 5Continuity
LEFT3 − 4
1 − 6Continuity
RIGHT1 − 3
4 − 6Continuity
If continuity is not as specified, replace the switch.
2. INSPECT MIRROR MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
3 and negative (−) lead to terminal 1. Check that the mirror
turns to left side.
(b) Remove the polarity, check that the mirror turns to right
side.

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Z04382
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− BODY ELECTRICALPOWER MIRROR CONTROL SYSTEM
1996 TOYOTA T100 (RM449U)
(c) Connect the positive (+) lead from the battery to terminal
2 and the negative (−) lead to terminal 1. Check that the
mirror turns upward.
(d) Reverse the polarity, that the mirror turns downward.
If operation is not as specified, replace the mirror assembly.

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
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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.

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Fading
Ionosphere
BE2820
Multipath
BE2821
Fade Out
I03092
Example :
Pinch RollerHead
Capstan
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− 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.).

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Cassette Tape Slot Cover
− BODY ELECTRICALAUDIO SYSTEM
BE−61
1861 Author: Date:
1996 TOYOTA T100 (RM449U)
5. ANTI−THEFT SYSTEM
HINT:
The words ”ANTI−THEFT SYSTEM” are displayed on the cas-
sette tape slot cover.
For operation instructions for the anti−theft system, please con-
sult the audio system section in the Owner’s Manual (hereafter
called O/M).
(a) Setting system
The system is in operation once the customer has pushed
the required buttons and entered the customer−selected
3−digit ID number.
(Refer to the O/M section, ”Setting the anti−theft system”)
HINT:
When the audio system is shipped the ID number has not
been input, so the anti−theft system is not in operation.
If the ID number has not been input, the audio system re-
mains the same as a normal audio system.
(b) Anti−theft system operation
If the normal electrical power source (connector or battery
terminal) is cut off, the audio system becomes inoperable,
even if the power supply resumes.
(c) Canceling system
The ID number chosen by the customer is input to cancel
the anti−theft system.
(Refer to the O/M section, ”If the system is activated”)
HINT: To change or cancel the ID number, please refer to
the O/M section ”Canceling the system”.

Downloaded from www.Manualslib.com manuals search engine BE27H−01
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− 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

Downloaded from www.Manualslib.com manuals search engine − BODY ELECTRICALAUDIO SYSTEM
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1996 TOYOTA T100 (RM449U)
1. ANTI−THEFT SYSTEM

Downloaded from www.Manualslib.com manuals search engine 1 Radio NO POWER COMING IN
SU P
Ye s
No
R
Ye sNo
No
No Ye s Ye s OK
NG
NG
OK RS
U
RS U P
P
RSU
P S R
US
UP Is tape player operating normally?
Radio faulty.
Radio assembly faulty.
Check if RADIO fuse is OK.
Replace fuse.
Is ACC applied to power amplifier?
Is ACC for the radio assembly being
output from the power amplifier?ACC wire harness faulty.
Power amplifier faulty.
Check if GND (wire harness side) to
power amplifier is OK.
Is ACC applied to radio assembly?
ACC wire harness faulty.
Check if GND (wire harness side) to radio is OK.GND faulty.
Power Amplifier faulty.
GND wire harness faulty.
Radio faulty.
Radio assembly faulty. R
PSU : Radio : Radio + Tape Player
: Radio − Tape Player (Built−in Power Amplifier)
: Radio − Tape Player (Separate Power Amplifier)
P
NG
OK
BE−64
− BODY ELECTRICALAUDIO SYSTEM
1996 TOYOTA T100 (RM449U)
2. AUDIO SYSTEM

Downloaded from www.Manualslib.com manuals search engine 2 Radio POWER COMING IN, BUT RADIO NOT OPERATING
RS
P U
RU
RS
US
UP : Radio
: Radio − Tape Player (Separate Power Amplifier): Radio + Tape Player: Radio − Tape Player (Built−in Power Amplifier)
Ye s
Ye s Ye s
Ye s
Ye s
No No No
No No No Is tape player operating normally?
Is there continuity in speaker wire harness?
Temporarily install another speaker, Functions OK?Speaker wire harness faulty.Radio assembly faulty. If radio side faulty
Radio faulty.
Go to No. 17.
Hissing sound from speaker?Radio faulty.
Radio faulty. Radio assembly faulty.
Radio assembly faulty. Go to No. 17. Is tape player operating normally?Speaker faulty.
Power amplifier faulty, Recheck system after repair.
Radio assembly faulty. Recheck system after repair.
3 Radio NOISE PRESENT, BUT AM−FM NOT OPERATING
: Radio: Radio + Tape Player
: Radio − Tape Player (Separate Power Amplifier)
Hissing sound from speaker?Power amplifier faulty, Recheck system after repair.
Radio assembly faulty.If radio side faulty
RS U
SU
P
SU
P
P
SU
P
P R
S
SU
R
SUP R
R
SUP
Ye s: Radio − Tape Player (Built−in Power Amplifier)
− BODY ELECTRICALAUDIO SYSTEM
BE−65
1996 TOYOTA T100 (RM449U)