TOYOTA T100 1996 Factory Service Manual

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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)

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HEAD
TAIL
OFF
Flash
BE031−02
Z08521
1 2
3 41 2
3 4
Z08522
− BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
BE−17
1996 TOYOTA T100 (RM449U)
INSPECTION
1. INSPECT LIGHT CONTROL SWITCH AND HEAD-
LIGHT DIMMER SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
OFF
Low beam−No continuity
OFF
High beam−No continuity
OFF
Flash5 − 12 − 13Continuity
TAIL
Low beam10 − 11Continuity
TAIL
High beam10 − 11Continuity
TAIL
Flash10 − 11
5 − 12 − 13Continuity
HEAD
Low beam4 − 10 − 11
6 − 13Continuity
HEAD
High beam4 − 10 − 11
5 − 13Continuity
HEAD
Flash4 − 10 − 11
5 − 12 − 13Continuity
If continuity is not as specified, replace the switch.
2. INSPECT HEADLIGHT CONTROL RELAY CONTINU-
ITY
ConditionTester connectionSpecified condition
Constant1 − 2Continuity
Apply B+ between
terminals 1 and 2.3 − 4Continuity
If continuity is not as specified, replace the relay.
3. INSPECT TAILLIGHT CONTROL RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant1 − 2Continuity
Apply B+ between
terminals 1 and 2.2 − 3Continuity
If continuity is not as specified, replace the relay.

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1 2
3
41 2
3
4
N15399
N15400
N15773
N06230
Wire Harness Side
12
34 5 867
11
91012 13
17 16 15 14
18 BE−18
− BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
1996 TOYOTA T100 (RM449U)
4. INSPECT HEADLIGHT DIMMER RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant1 − 4
2 − 4Continuity
Apply B+ between
terminals 2 and 4.3 − 4Continuity
If continuity is not as specified, replace the relay.
5. INSPECT DOOR COURTESY SWITCH
(See page BE−25)
6. Light−On Warning System:
INSPECT INTEGRATION RELAY OPERATION
(a) Connect the positive (+) lead from the battery to terminal
2 and 11.
(b) Connect the negative (−) lead from the battery to terminal
7 and 10.
(c) Check the buzzer sounds.
(d) Disconnect the positive (+) lead from the battery to termi-
nal 2.
(e) Check that the buzzer stops sounding.
(f) Connect the positive (+) lead from the battery to terminal
2.
(g) Disconnect the negative (−) lead from the battery to termi-
nal 10.
(h) Check that the buzzer stops sounding.
If operation is not as specified, replace the relay.
7. Connector Disconnected:
INSPECT DAYTIME RUNNING LIGHT RELAY CIRCUIT
Disconnect the connector from the relay and inspect the con-
nector on the wire harness side.

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From Back Side
17
Z08559
1
2
3
41
2
3
4
− BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
BE−19
1996 TOYOTA T100 (RM449U) Tester connection
ConditionSpecified condition
5 − GroundLight control switch OFF or TAILNo continuity
5 − GroundLight control switch HEADContinuity
7 − Ground
16 − GroundHeadlight dimmer switch
Low beamNo continuity
7 − Ground
16 − GroundHeadlight dimmer switch
High beam or FlashContinuity
8 − GroundParking brake switch OFF
(Parking brake lever released)No continuity
8 − GroundParing brake switch ON
(Parking brake lever pulled up)Continuity
12 − GroundConstantContinuity
13 − GroundConstantContinuity
2 − GroundIgnition switch LOCK or ACCNo voltage
2 − GroundIgnition switch ON or STARTBattery positive voltage
6 − GroundConstantBattery positive voltage
11 − GroundEngine StopNo voltage
11 − GroundEngine RunningBattery positive voltage
If circuit is as specified, perform inspections.
8. Connector Connected:
INSPECT DAYTIME RUNNING LIGHT RELAY CIRCUIT
Connect the wire harness side connector to the relay and in-
spect wire harness side connector from the back side, as
shown.
Tester connectionConditionSpecified condition
17 − GroundHeadlight dimmer switch
Low beamNo voltage
17 − GroundHeadlight dimmer switch
High beam or FlashBattery positive voltage
If circuit is as specified, trying replacing the relay with a new
one.
9. INSPECT DAYTIME RUNNING LIGHT RELAY NO.4
CONTINUITY
ConditionTester connectionSpecified condition
Constant3 − 4Continuity
Apply B+ between
terminals 3 and 4.1 − 2Continuity
If continuity is not as specified, replace the relay.

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BE−20
− BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
1996 TOYOTA T100 (RM449U)
10. INSPECT DAYTIME RESISTOR CONTINUITY
ConditionTester connectionSpecified condition
Constant1 − 2Approx. 337m Ω
If continuity is not as specified, replace the resistor.

Downloaded from www.Manualslib.com manuals search engine BE032−02
Z15837
For Adjustment in
Vertical Direction For Adjustment in
Horizontal Direction
− BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
BE−21
1996 TOYOTA T100 (RM449U)
ADJUSTMENT
1. ADJUST HEADLIGHT AIMING
2. ADJUST SPIRAL CABLE
(See page SR−20)

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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

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Z09275
HEAD
TAIL
Flash OFF
N06515
1 23
Turn Signal Light Bulbs (21 W)
Z09278
− BODY ELECTRICALTURN SIGNAL AND HAZARD WARNING SYSTEM
BE−23
1996 TOYOTA T100 (RM449U)
INSPECTION
1. INSPECT TURN SIGNAL SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
Left turn3 − 9Continuity
Neutral−No continuity
Right turn3 − 8Continuity
If continuity is not as specified, replace the switch.
2. INSPECT TURN SIGNAL FLASHER OPERATION
(a) Connect the positive (+) lead from the battery to terminal
3 and the negative (−) lead to terminal 1.
(b) Connect the 2 turn signal light bulbs in parallel to each
other to terminals 1 and 2, check that the bulbs flash.
HINT:
The turn signal lights should flash 60 to 120 times per minute.
If one of the front or rear turn signal lights has an open circuit,
the number of flashes will be more than 140 per minute.
If operation is not as specified, replace the flasher.
3. INSPECT HAZARD WARNING SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
Switch OFF7 − 10Continuity
Switch ON4 − 5 − 6 − 9
7 − 8Continuity
Illumination circuit2 − 3Continuity
If continuity is not as specified, replace the switch.

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Relay Block
 DOME FuseSpot Light Room Light
Door Courtesy Switch
Door Courtesy Switch
Footwell Light
BE035−02
BE−24
− BODY ELECTRICALINTERIOR LIGHT SYSTEM
1824 Author: Date:
1996 TOYOTA T100 (RM449U)
INTERIOR LIGHT SYSTEM
LOCATION

Downloaded from www.Manualslib.com manuals search engine BE036−02
N05342
N05343
BE2875
ON
OFF
1
− BODY ELECTRICALINTERIOR LIGHT SYSTEM
BE−25
1996 TOYOTA T100 (RM449U)
INSPECTION
1. INSPECT ROOM LIGHT ASSEMBLY CONTINUITY
(a) Disconnect the connector from room light assembly.
(b) Turn the room light switch ON, check that the there is con-
tinuity between terminal 2 and body ground.
(c) Turn the room light switch DOOR, check that there is con-
tinuity between terminals 1 and 2.
If operation is not as specified, replace the switch.
2. INSPECT DOOR COURTESY SWITCH CONTINUITY
(a) Check that there is no continuity between terminal and
the switch body in the ON position (switch pin released :
opened door).
(b) Check that there is continuity between terminal and the
switch body in the OFF position (switch pin pushed in :
closed door).
If operation is not as specified, replace the switch.