check engine light TOYOTA T100 1996 Factory Service Manual

Downloaded from www.Manualslib.com manuals search engine AB0158
Battery
SST
AB0152
SST
AB0158
Battery
SST
H01580
SST
RS−12
− SUPPLEMENTAL RESTRAINT SYSTEMSTEERING WHEEL PAD AND SPIRAL CABLE
1996 TOYOTA T100 (RM449U)
1. AIRBAG DEPLOYMENT WHEN SCRAPPING VE-
HICLE
HINT:
Have a battery ready as the power source to deploy the airbag.
(a) Check functioning of SST
CAUTION:
When deploying the airbag, always use the specified SST:
SRS Airbag Deployment Tool.
SST 09082−00700
(1) Connect the SST battery.
Connect the red clip of the SST to the battery posi-
tive (+) terminal and the black clip to the battery neg-
ative (−) terminal.
HINT:
Do not connect the yellow connector which will be connected
with the supplemental restraint system.
(2) Check functioning of SST.
Press the SST activation switch, and check that the
LED of the SST activation switch lights up.
CAUTION:
If the LED lights up when the activation switch is not being
pressed, SST malfunction is probable, so definitely do not
use the SST.
(b) Install the SST.
CAUTION:
Check that there is no looseness in the steering wheel and
steering wheel pad.
(1) Disconnect the airbag connector of the spiral cable.

Downloaded from www.Manualslib.com manuals search engine SST
R13455
SSTBattery
− SUPPLEMENTAL RESTRAINT SYSTEMSTEERING WHEEL PAD AND SPIRAL CABLE
RS−13
1996 TOYOTA T100 (RM449U)
(2) Connect the SST connector to the airbag connector
of the spiral cable.
SST 09082−00700
(3) Move the SST at least 10 m (33 ft) away from the
front of the vehicle.
(4) Close all the doors and windows of the vehicle.
NOTICE:
Take care not to damage the SST wire harness.
(5) Connect the SST red clip to the battery positive (+)
terminal and the black clip to the negative (−) termi-
nal.
(c) Deploy the airbag.
(1) Check that no one is inside the vehicle or within 10
m (33 ft) area around the vehicle.
(2) Press the SST activation switch and deploy the air-
bag.
HINT:
The airbag deploys simultaneously as the LED of the SST ac-
tivation switch lights up.
(d) Dispose of steering wheel pad (with airbag).
CAUTION:
The steering wheel pad is very hot when the airbag is
deployed, so leave it alone for at least 30 minutes af-
ter deployment.
Use gloves and safety glasses when handling a steer-
ing wheel pad with deployed airbag.
Always wash your hands with water after completing
the operation.
Do not apply water, etc. to a steering wheel pad with
deployed airbag.
(1) When scrapping a vehicle, deploy the airbag and
scrap the vehicle with the steering wheel pad still
installed.
(2) When moving a vehicle for scrapping which has a
steering wheel pad with deployed airbag, use
gloves and safety glasses.

Downloaded from www.Manualslib.com manuals search engine R04211
Inner Diam.
Tires
(3 or More)Width
H00400
10 m (33 ft) or more
AB0166
− SUPPLEMENTAL RESTRAINT SYSTEMSTEERING WHEEL PAD AND SPIRAL CABLE
RS−17
1996 TOYOTA T100 (RM449U)
Covering method using tires:
Place at least 3 tires without disc wheel on top of the
disc wheel with the tire to which the steering wheel
pad is tied.
Tire size: Must exceed the following dimensions−
Width: 185 mm (7.87 in.)
Inner diameter: 360 mm (14.17 in.)
CAUTION:
Do not use tires with disc wheels.
NOTICE:
The tires may be marked by the airbag deployment, so use
the redundant tires.
(g) Deploy the airbag.
(1) Connect the SST red clip to the battery positive (+)
terminal and the black clip to the battery negative
(−) terminal.
(2) Check that no one is within 10 m (33 ft) area around
the disc wheel which the steering wheel pad is tied
to.
(3) Press the SST activation switch and deploy the air-
bag.
HINT:
The airbag deploys simultaneously as the LED of the SST ac-
tivation switch lights up.
(h) Dispose of the steering wheel pad (with airbag)
CAUTION:
The steering wheel pad is very hot when the airbag is
deployed, so leave it alone for at least 30 minutes af-
ter deployment.
Use gloves and safety glasses when handling a steer-
ing wheel pad with deployed airbag.
Always wash your hands with water after completing
the operation.

Downloaded from www.Manualslib.com manuals search engine N12607
N12608
Junction Block Side
− BODY ELECTRICALIGNITION SWITCH AND KEY UNLOCK WARNING
SWITCHBE−13
1996 TOYOTA T100 (RM449U)
(f) Connect the positive (+) lead from the battery to terminal
3.
(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.
4. INSPECT INTEGRATION RELAY CIRCUIT
Remove the relay from the junction block No.1 and inspect the
connectors on the junction block side.
Tester connectionConditionSpecified condition
2 − GroundKey unlock warning switch OFFNo continuity
2 − GroundKey unlock warning switch ONContinuity
*4 − GroundConstantContinuity
6 − GroundBuckle switch OFFNo continuity
6 − GroundBuckle switch ONContinuity
7 − GroundConstantContinuity
10 − GroundDriver’s door courtesy switch OFFNo continuity
10 − GroundDriver’s door courtesy switch ONContinuity
12 − GroundPassenger’s door courtesy switch OFFNo continuity
12 − GroundPassenger’s door courtesy switch ONContinuity
1 − GroundIgnition switch LOCKNo voltage
1 − GroundIgnition switch ACC or ONBattery positive voltage
3 − GroundConstantBattery positive voltage
5 − GroundIgnition switch LOCK or ACCNo voltage
5 − GroundIgnition switch ONBattery positive voltage
8 − GroundIgnition switch LOCK or ACCNo voltage
8 − GroundIgnition switch ONBattery positive voltage
9 − GroundIgnition switch LOCK or ACCNo voltage
9 − GroundIgnition switch ONBattery positive voltage
11 − GroundLight control switch OFFNo voltage
11 − GroundLight control switch TAIL or HEADBattery positive voltage
*: SR5 Model
If circuit is as specified, trying replacing the relay with a new
one.
If circuit is not as specified, inspect the circuits connected to oth-
er parts.

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.

Downloaded from www.Manualslib.com manuals search engine BE034−10
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.

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.

Downloaded from www.Manualslib.com manuals search engine Z09692
BA w/ Tachometer
N06031
BE3235
Ignition
Switch
Battery(Wire Harness Side) (3.4W) Fuel Gauge
− BODY ELECTRICALCOMBINATION METER
BE−39
1996 TOYOTA T100 (RM449U)
3. INSPECT TACHOMETER ON−VEHICLE
(a) Connect a tune−up test tachometer, and start the engine.
NOTICE:
Reversing the connection of the tachometer will damage
the transistors and diodes inside. When removing or instal-
ling the tachometer, be careful not to drop or subject it to
heavy shocks.
(b) Compare the tester and tachometer indications.
DC 13.5 V 20°C at (68°F)
Standard indication (rpm)Allowable range (rpm)
700610 − 750
3,0002,850 − 3,150
5,0004,850 − 5,150
7,0006,790 − 7,210
If error is excessive, replace the tachometer.
4. INSPECT VOLT GAUGE SYSTEM
Measure the resistance between terminals A and B.
Resistance: Approx. 347 Ω
If resistance value is not as specified, replace the gauge.
5. INSPECT FUEL RECEIVER GAUGE OPERATION
(a) Disconnect the connector from the sender gauge.
(b) Turn the ignition switch ON, check that the receiver gauge
needle indicates EMPTY.
(c) Connect terminals 1 and 3 on the wire harness side con-
nector through a 3.4 watts test bulb.
(d) Turn the ignition switch ON, check that the bulb lights up
and the receiver gauge needle moves towards the full
side.
HINT:
Because of the silicon oil in the gauge, it will take a short time
for needle to stabilize.
If operation is not as specified, inspect the receiver gauge resis-
tance.

Downloaded from www.Manualslib.com manuals search engine Z09690
w/ Tachometer
w/o TachometerAB
C
A
B
C
N06021
N06027
F
1/2
E
BE3238
Warning Light
(Wire Harness Side) Ignition
Switch
Battery BE−40
− BODY ELECTRICALCOMBINATION METER
1996 TOYOTA T100 (RM449U)
6. INSPECT FUEL RECEIVER GAUGE RESISTANCE
Measure the resistance between terminals.
w/ Tachometer:
Between terminalsResistance (Ω)
A − BApprox. 137.0
A − CApprox. 123.0
B − CApprox. 260.0
w/o Tachometer:
Between terminalsResistance (Ω)
A − BApprox. 150.0
A − CApprox. 80.0
B − CApprox. 55.0
If resistance value is not as specified, replace the receiver
gauge.
7. INSPECT FUEL SENDER GAUGE OPERATION
(a) Connect a series of three 1.5 V dry batteries.
(b) Connect the positive (+) lead from the dry cell batteries to
terminal 2 through a 3.4 W test bulb and the negative (−)
lead to terminal 1.
(c) Check the positive (+) lead from the voltmeter to terminal
2 and the negative (−) lead to terminal 1.
(d) Check that the voltage rises as the float is moved from the
top to bottom position.
If operation is not as specified, replace the sender gauge.
8. INSPECT FUEL SENDER GAUGE RESISTANCE
Measure the resistance between terminals 1 and 2.
Float position (mm)Resistance (Ω)
F : Approx. 95.0F : Approx. 3.0
1 / 2 : Approx. 188.01 / 2 : Approx. 32.5
E : Approx. 283.0E : Approx. 110.0
If resistance value is not as specified, replace the sender
gauge.
9. INSPECT FUEL LEVEL WARNING LIGHT
(a) Disconnect the connector from the sender gauge.
(b) Connect terminals 1 and 4 on the wire harness side con-
nector.
(c) Turn the ignition switch ON, check that the warning light
lights up.
If the warning light does no light up, test the bulb.

Downloaded from www.Manualslib.com manuals search engine N12609
N12610
N06616
Engine Coolant Temperature Gauge
Ignition
Switch
BatterySender
Gauge
N06617
Engine Coolant Temperature Gauge
Test
Bulb
(3.4 W)
− BODY ELECTRICALCOMBINATION METER
BE−41
1996 TOYOTA T100 (RM449U)
10. INSPECT FUEL LEVEL WARNING SWITCH
(a) Apply battery positive voltage between terminal 1 and 3,
and through a 3.4 W test bulb, check the bulb lights up.
HINT:
It will take a short time for bulb to light up.
(b) Submerge the switch in fuel, check that the bulb goes out.
If operation is not as specified, replace the sender gauge.
11. INSPECT ENGINE COOLANT TEMPERATURE RE-
CEIVER GAUGE OPERATION
(a) Disconnect the connector from the sender gauge.
(b) Turn the ignition switch ON, check that the receiver gauge
needle indicates COOL.
(c) Ground terminal on the wire harness side connecter
through a 3.4 W test bulb.
(d) Turn the ignition switch ON, check that the bulb lights up
and the receiver gauge needle moves to the hot side.
If operation is as specified, replace the sender gauge. Then, re-
check the system.
If operation is not as specified, measure the receiver gauge re-
sistance.