headlight bulb TOYOTA T100 1996 Factory Service Manual

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BE−2
− BODY ELECTRICALBODY ELECTRICAL SYSTEM
1996 TOYOTA T100 (RM449U)
PROBLEM SYMPTOMS TABLE
The table below will be useful for you in troubleshooting these electrical problems. The most likely causes
of the malfunction are shown in the order of their probability. Inspect each part in the order shown, and re-
place the part when it is found to be faulty.
USA:
HEADLIGHT AND TAILLIGHT SYSTEM
SymptomSuspect AreaSee page
Headlight does not light up
(Taillight is normal)
1. HEAD Fuse (Relay Block)
2. Light Control Switch
3. Headlight Dimmer Switch
4. Headlight BulbBE−14
BE−17
BE−17
BE−17
Headlight does not light up
(Taillight does not light up)
1. Light Control Switch
2. Headlight Dimmer Switch
3. Wire Harness
4. Headlight BulbBE−17
BE−17
−
−
Only one light comes on
1. HEAD Fuse (Relay Block)
2. Wire Harness
3. Headlight BulbBE−14
−
−
”Lo−Beam” does not light up
1. Headlight Control Relay
2. Headlight Dimmer Relay
3. Headlight Dimmer Switch
4. Wire Harness
5. Headlight BulbBE−17
BE−17
BE−17
−
−
”Hi−Beam” does not light up
1. Headlight Control Relay
2. Headlight Dimmer Relay
3. Headlight Dimmer Switch
4. Wire Harness
5. Headlight BulbBE−17
BE−17
BE−17
−
−
”Flash” does not light up
1. Headlight Control Relay
2. Headlight Dimmer Relay
3. Headlight Dimmer Switch
4. Wire Harness
5. Headlight BulbBE−17
BE−17
BE−17
−
−
Taillight does not light up
(Headlight does not light up)
1. TAIL Fuse (Junction Block No.1)
2. Light Control Switch
3. Wire Harness
4. Headlight BulbBE−17
BE−17
−
−
Taillight does not light up
(Headlight is normal)
1. TAIL Fuse (Junction Block No.1)
2. Light Control Switch
3. Taillight Control Relay
4. Wire Harness
5. Taillight BulbBE−14
BE−17
BE−17
−
−
Only one light goes out or does not light up1. Wire Harness
2. Taillight Bulb−
−
Rear Combination light does not light up
1. TAIL Fuse (Junction Block No.1)
2. Wire Harness
3. Taillight BulbBE−14
−
−
”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
−

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1996 TOYOTA T100 (RM449U)
CANADA:
HEADLIGHT AND TAILLIGHT SYSTEM
SymptomSuspect AreaSee page
Only one side headlight does not light up.1. Headlight Bulb
2. Wire Harness−
−
”Lo−Beam” does not light up. (ALL)
1. D.R.L. Relay
2. Headlight Dimmer Relay
3. Headlight Control Relay
4. Headlight Dimmer Switch
5. Wire HarnessBE−14
BE−17
BE−17
BE−17
−
”Lo−Beam” does not light up. (ONE SIDE)
1. HEAD LH−Lo Fuse (Relay Block)
2. HEAD RH−Lo Fuse (Relay Block)
3. Headlight Bulb
4. Wire HarnessBE−14
BE−14
−
−
”Hi−Beam” does not light up. (ALL)
1. DRL Fuse (Junction Block No.1)
2. Headlight Dimmer Relay
3. Headlight Control Relay
4. Headlight Dimmer Switch
5. Wire HarnessBE−14
BE−17
BE−17
BE−17
−
”Hi−Beam” does not light up. (ONE SIDE)
1. HEAD LH−Hi Fuse (Relay Block)
2. HEAD RH−Hi Fuse (Relay Block)
3. Headlight Bulb
4. Wire HarnessBE−14
BE−14
−
−
”Flash” does not light up.1. Headlight Dimmer Switch
2. Wire HarnessBE−17
−
Headlight does not light up.
(Taillight is normal)
1. Headlight Control Relay
2. D.R.L. Relay
3. D.R.L. No.4 Relay
4. D.R.L. Resistor
5. Headlight Dimmer Switch
6. Light Control Switch
7. Headlight Bulb
8. Wire HarnessBE−17
BE−17
BE−17
BE−17
BE−17
BE−17
−
−
Headlight does not light up.
(Taillight does not light up)
1. Headlight Control Relay
2. D.R.L. Relay
3. D.R.L. No.4 Relay
4. D.R.L. Resistor
5. Headlight Dimmer Switch
6. Light Control Switch
7. Headlight Bulb
8. Wire HarnessBE−17
BE−17
BE−17
BE−17
BE−17
BE−17
−
−
Only one side taillight does not light up.1. Taillight Bulb
2. Wire Harness−
−
Taillight does not light up.
(Headlight is normal)
1. TAIL Fuse (Junction Block No.1)
2. Taillight Control Relay
3. Light Control Switch
4. Taillight Bulb
5. Wire HarnessBE−14
BE−17
BE−17
−
−
Taillight does not light up.
(Headlight does not light up)1. Light Control Switch
2. Taillight Bulb
3. Wire HarnessBE−17
−
−
Headlight does not light up with light control SW in HEAD.
1. Light Control Switch
2. D.R.L. Relay
3. D.R.L. No.4 Relay
4. Wire HarnessBE−17
BE−17
BE−17
−

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− 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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1996 TOYOTA T100 (RM449U) A/T Oil temperature warning indicator light does not light up
1. Bulb
2. Combination Meter Wiring Circuit
3. A/T Oil Temperature Sensor
4. Wire Harness−
BE−36
BE−38
−
SRS warning light does not light up
1. Bulb
2. Combination Meter Wiring Circuit
3. Center Airbag Sensor Assembly
4. Wire Harness−
BE−36
DI−372
−
Malfunction indicator does not light up
1. Bulb
2. ECM
3. Wire Harness−
−
−
−
Seat belt warning light does not light up
1. Bulb
2. Integration Relay
3. Wiring Harness−
−
−
Discharge warning light does not light up
1. IGN Fuse (Junction Block No.1)
2. Bulb
3. Wire Harness
4. Generator−
−
−
−
Brake warning light does not light up
1. Bulb
2. Combination Meter Wiring Circuit
3. Parking Brake Switch
4. Brake Fluid Level Warning Switch−
BE−36
BE−38
BE−38
COMBINATION METER
Indicator Lights:
SymptomSuspect AreaSee page
O/D OFF indicator light does not light up
1. Bulb
2. Combination Meter Wiring Circuit
3. O/D OFF Switch
4. Wire Harness−
BE−36
DI−311
−
High beam indicator light does not light up
1. Bulb
2. Combination Meter Wiring Circuit
3. Wire Harness
4. Headlight System−
BE−36
−
BE−2
Turn indicator light does not light up
1. Bulb
2. Combination Meter Wiring Circuit
3. Wire Harness
4. Turn Signal and Hazard Warning System−
BE−36
−
BE−2
Shift indicator lights do not light up (ALL)
1. Bulb
2. Combination Meter Wiring Circuit
3. PNP Switch
4. Wire Harness−
BE−36
DI−306
−
Shift indicator lights do not light up (L, 2, D)
1. Bulb
2. Combination Meter Wiring Circuit
3. PNP Switch
4. Light Control Rheostat
5. Wire Harness−
BE−36
DI−306
BE−38
−
Only one shift indicator does not light up1. Bulb
2. Combination Meter Wiring Circuit−
BE−36