Page 1849 of 2062
Downloaded from www.Manualslib.com manuals search engine Z19311
Relay Block
Headlight Control Relay
*2 Headlight Dimmer Relay
*1 HEAD (RH) Fuse
*2 HEAD (RH−Hi) Fuse
*2 HEAD (RH−Lo) Fuse
*1 HEAD (LH) Fuse
*2 HEAD (LH−Hi) Fuse
*2 HEAD (LH−Lo) Fuse
DOME Fuse
*1 : USA Models Only
*2 : CANADA Models Only
D.R.L. Daytime Running Light
Headlight *2 D.R.L. Resister
Combination Switch
Light Control Switch
Headlight Dimmer SwitchIgnition Switch
D.R.L. Main
Relay
Door Courtesy
Switch
Rear Combination Light
Junction Block No.1
Taillight Control Relay
*2 D.R.L. No.4 Relay
Integration Relay
*2 D.R.L. No.4 Fuse
GAUGE Fuse
TAIL Fuse
ECU−B Fuse
BE02Z−03
BE−14
− BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
1814 Author: Date:
1996 TOYOTA T100 (RM449U)
HEADLIGHT AND TAILLIGHT SYSTEM
LOCATION
Page 1850 of 2062
Downloaded from www.Manualslib.com manuals search engine BE030−02
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
Page 1851 of 2062
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)
Page 1852 of 2062

Downloaded from www.Manualslib.com manuals search engine Z09275
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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Downloaded from www.Manualslib.com manuals search engine Z08523
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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Downloaded from www.Manualslib.com manuals search engine Z10157
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.
Page 1855 of 2062
Downloaded from www.Manualslib.com manuals search engine Z07683
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.
Page 1856 of 2062
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)