horn TOYOTA T100 1996 Factory Service Manual

Downloaded from www.Manualslib.com manuals search engine MA002−05
MA−2
− MAINTENANCEINSIDE VEHICLE
37 Author: Date:
1996 TOYOTA T100 (RM449U)
INSIDE VEHICLE
GENERAL MAINTENANCE
These are maintenance and inspection items which are considered to be the owner’s responsibility.
They can be done by the owner or they can have them done at a service shop.
These items include those which should be checked on a daily basis, those which, in most cases, do not
require (special) tools and those which are considered to be reasonable for the owner to do.
Items and procedures for general maintenance are as follows.
1. GENERAL NOTES
Maintenance items may vary from country to country. Check the owner’s manual supplement in which
the maintenance schedule is shown.
Every service item in the periodic maintenance schedule must be performed.
Periodic maintenance service must be performed according to whichever interval in the periodic main-
tenance schedule occurs first, the odometer reading (miles) or the time interval (months).
Maintenance service after the last period should be performed at the same interval as before unless
otherwise noted.
Failure to do even one item can cause the engine to run poorly and increase exhaust emissions.
2. LIGHTS
(a) Check that the headlights, stop lights, taillights, turn signal lights, and other lights are all working.
(b) Check the headlight aim.
3. WARNING LIGHTS AND BUZZERS
Check that all warning lights and buzzers function properly.
4. HORN
Check that it is working.
5. WINDSHIELD GLASS
Check for scratches, pits or abrasions.
6. WINDSHIELD WIPER AND WASHER
(a) Check operation of the wipers and washer.
(b) Check that the wipers do not streak.
7. WINDSHIELD DEFROSTER
Check that air comes out from the defroster outlet when operating the heater or air conditioner.
8. REAR VIEW MIRROR
Check that it is mounted securely.
9. SUN VISORS
Check that they move freely and are mounted securely.
10. STEERING WHEEL
Check that it has the specified freeplay. Be alert for changes in steering condition, such as hard steering,
excessive freeplay or strange noises.
11. SEATS
(a) Check that the seat adjusters operate smoothly.
(b) Check that all latches lock securely in any position.
(c) Check that the head restraints move up and down smoothly and that the locks hold securely in any
latch position.
(d) For fold−down seat backs, check that the latches lock securely.
12. SEAT BELTS
(a) Check that the seat belt system such as the buckles, retractors and anchors operate properly and
smoothly.
(b) Check that the belt webbing is not cut, frayed, worn or damaged.

Downloaded from www.Manualslib.com manuals search engine RS03L−02
R07746
R06972
R05736
Horn Button Contact Plate
− SUPPLEMENTAL RESTRAINT SYSTEMSTEERING WHEEL PAD AND SPIRAL CABLE
RS−9
1996 TOYOTA T100 (RM449U)
INSPECTION
1. VEHICLES NOT INVOLVED IN A COLLISION
(a) Do a diagnostic system check.
(See page DI−365)
(b) Do a visual check which includes the following items with
the steering wheel pad (with airbag) installed in the ve-
hicle.
Check for cuts, minute cracks or marked discoloration on
the steering wheel pad top surface and in the grooved
portion.
2. VEHICLE INVOLVED IN A COLLISION AND AIRBAG IS
NOT DEPLOYED
(a) Do a diagnostic system check.
(See page DI−365)
(b) Do a visual check which includes the following items with
the steering wheel pad (with airbag) removed from the ve-
hicle.
Check for cuts, minute cracks or marked discolor-
ation on the steering wheel pad top surface and in
the grooved portion.
Check for cuts and cracks in wire harness, and chip-
ping in connectors.
Check for the deformation of the horn button con-
tact plate of the steering wheel.
HINT:
If the horn button contact plate of the steering wheel is de-
formed, never repair it. Always replace the steering wheel
assembly with a new one.

Downloaded from www.Manualslib.com manuals search engine RS−10
− SUPPLEMENTAL RESTRAINT SYSTEMSTEERING WHEEL PAD AND SPIRAL CABLE
1996 TOYOTA T100 (RM449U)
There should be no interference between the steering
wheel pad and steering wheel, and the clearance should
be uniform all the way around when the new steering
wheel pad is installed on the steering wheel.
CAUTION:
For removal and installation of the steering wheel pad, see
the SR section and be sure to follow the correct procedure.
3. VEHICLE INVOLVED IN A COLLISION AND AIRBAG IS
DEPLOYED
(a) Do a diagnostic system check.
(See page DI−365)
(b) Do a visual check which includes the following items with
the steering wheel pad (with airbag) removed from the ve-
hicle.
Check for the deformation on the horn button con-
tact plate of the steering wheel.
Check for the damage to the spiral cable connector
and wire harness.
HINT:
If the horn button contact plate of the steering wheel is de-
formed, never repair it. Always replace the steering wheel
assembly with a new one.
There should be no interference between the steering
wheel pad and steering wheel, and the clearance should
be uniform all the way around when the new steering
wheel pad is installed on the steering wheel.

Downloaded from www.Manualslib.com manuals search engine BE−4
− BODY ELECTRICALBODY ELECTRICAL SYSTEM
1996 TOYOTA T100 (RM449U) Headlight does not go out with light control SW in OFF.
1. Headlight Control Relay
2. Light Control Switch
3. Wire HarnessBE−17
BE−17
−
Taillight does not light up with light control SW in TAIL.
1. Taillight Control Relay
2. Light Control Switch
3. Wire HarnessBE−17
BE−17
−
Taillight does not go out with light control SW in OFF.
1. Taillight Control Relay
2. Light Control Switch
3. Wire HarnessBE−17
BE−17
−
Headlight do not light up with engine running, parking brake SW
and light control SW in OFF.
1. ECU−B Fuse (Junction Block No.1)
2. GAUGE Fuse (Junction Block No.1)
3. DRL Fuse (Junction Block No.1)
4. D.R.L. Relay
5. D.R.L. No.4 Relay
6. D.R.L. Resistor
7. Wire Harness
8. Generator L Terminal
9. Parking Brake SwitchBE−14
BE−14
BE−14
BE−17
BE−17
BE−17
−
−
BE−38
”Light−on warning system” does not operate.
1. Integration Relay
2. DOME Fuse (Relay Block)
3. GAUGE Fuse (Junction Block No.1)
4. Door Courtesy Switch
5. Wire HarnessBE−17
BE−14
BE−14
BE−25
−
TURN SIGNAL AND HAZARD WARNING SYSTEM
SymptomSuspect AreaSee page
”Hazard” and ”Turn” do not light up
1. Hazard Warning Switch
2. Turn Signal Flasher
3. Wire HarnessBE−23
BE−23
−
The flashing frequency is abnormal
1. Bulb
2. Turn Signal Switch
3. Wire Harness−
BE−23
−
Hazard warning light does not light up
(Turn signal is normal)1. HAZ−HORN Fuse (Relay Block)
2. Wire HarnessBE−22
−
Hazard warning light does not light up in one direction1. Hazard Warning Switch
2. Wire HarnessBE−23
−
*1 Turn signal does not light up
1. Ignition Switch
2. TURN Fuse (Junction Block No.1)
3. Turn Signal Switch
4. Wire HarnessBE−12
BE−22
BE−23
−
*2 Turn signal does not light up
1. TURN Fuse (Junction Block No.1)
2. Turn Signal Switch
3. Wire HarnessBE−22
BE−23
−
Turn signal does not light up in one direction1. Turn Signal Switch
2. Wire HarnessBE−23
−
Only one bulb does not light up1. Bulb
2. Wire Harness−
−
*1: Combination Meter, Wiper and Washer do not operate.
*
2: Combination Meter, Wiper and Washer are normal.

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I01871
Light Control Switch
SpringConnector
Wiper Switch Horn Contact
Light Dimmer Turn Switch Slip Ring
(w/ Cruise Control System)Switch Body w/ Intermittent Wiper or Mist Wiper
Ball
− BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
BE−15
1996 TOYOTA T100 (RM449U)
COMPONENTS

Downloaded from www.Manualslib.com manuals search engine I01872
Switch Body Light Control SwitchConnector
Horn Contact
Wiper Switch
Spring
Ball w/ Intermittent Wiper and Mist Wiper
Light Dimmer Turn Switch Slip Ring
(w/ Cruise Control System)
Z14541
Light Dimmer Turn Switch
Light Control Switch
Ball
Spiral CableSwitch BodyWiper Switch Connector BE−16
− BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
1996 TOYOTA T100 (RM449U)

Downloaded from www.Manualslib.com manuals search engine Z16014
Relay Block
 HAZ−HORN Fuse
Front Turn Signal LightRear Combination Light
Hazard Warning Switch
Combination Switch
 Turn Signal SwitchIgnition Switch
Turn Signal Flasher
Junction Block No.1
 TURN Fuse
BE033−04
BE−22
− BODY ELECTRICALTURN SIGNAL AND HAZARD WARNING SYSTEM
1822 Author: Date:
1996 TOYOTA T100 (RM449U)
TURN SIGNAL AND HAZARD WARNING SYSTEM
LOCATION

Downloaded from www.Manualslib.com manuals search engine AC0FS−02
N13104
AC−50
− AIR CONDITIONINGCONDENSER
1996 TOYOTA T100 (RM449U)
REMOVAL
1. DISCHARGE REFRIGERANT FROM REFRIGERATION
SYSTEM
HINT:
At the time of installation, please refer to the following item.
Evacuate air from refrigeration system.
Charge system with refrigerant and inspect for leakage of refrig-
erant.
Specified amount: 650 ± 50 g (22.92 ± 1.76 oz.)
2. REMOVE RADIATOR GRILE
3. REMOVE HORNS
4. REMOVE HOOD LOCK SET BOLTS
5. REMOVE CENTER BRACE
6. REMOVE 2 LIQUID TUBES
(a) Remove the 2 bolt and disconnect the liquid tubes from
receiver.
Torque: 5.4 N·m (55 kgf·cm, 48 in.·lbf)
NOTICE:
Cap the open fittings immediately to keep moisture or dirt
out of the system.
HINT:
At the time of installation, please refer to the following item.
Lubricate 2 new O−rings with compressor oil and install the
tubes.
(b) Loosen the nut and disconnect the 2 clamps, then re-
move the liquid tube.
Torque: 14 N·m (140 kgf·cm, 10 ft·lbf)
NOTICE:
Cap the open fittings immediately to keep moisture or dirt
out of the system.
HINT:
At the time of installation, please refer to the following item.
Lubricate a new O−ring with compressor oil and install the
tubes.