1995 TOYOTA SUPRA bulb

MEASURE ACCUMULATOR BACK PRESSURE
NOTICE:
wDo the test at normal operating fluid temp. 50±805C (122±1765F).
wBe careful to prevent the oil pressure gauge hose from interfering with the exhaust pipe.
(a) Warm up the transmission fluid.
(b) Remove the test plug on the transmission case rear right side and connect the oil pressure gauge
(SST)
SST 09992±00094 (Oil pressure gauge)
HINT: Connecting the oil pressure gauge will be made easier by moving the RH side head insulator aside.
(c) Remove the passenger side floor carpet and ECM protector.
(d) Connect the SST (check harness A) between ECM and connector of vehicle wire harness.
SST: 09990±01000
(e) Install one test lead probe into the terminal SLN of the ECM wire harness side connector and take care
not to ground the other test lead probe.
HINT: Prepare test leads which are connected with an approximately 8 W light bulb. AT2±50
± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONTROUBLESHOOTING

Check No.4 solenoid valve.
Replace No.4 solenoid valve.
1. Jack up the vehicle.
2. Remove oil pan.
3. Disconnect the connector
Measure resistance between terminal 1 and 2 of
solenoid connector.
Resistance: 5.1 Ð 5.5

Check solenoid resistance
Check solenoid operation
Connect positive  lead with an 8 Ð 10 W bulb to
terminal 1 of solenoid connector and negative 
lead to terminal 2, then check the movement of the
valve.
When battery positive
voltage is applied.Valve moves in
direction in illustration
at left.
When battery positive
voltage is cut off.
direction in illustration
at left.
Valve moves in

Check solenoid's operation
1. Prepare a variable power supply.
2. Connect positive  lead of the variable power
supply to terminal 1 of solenoid connector and
negative  lead to terminal 2.
3. Check the movement of the valve when the
voltage is gradually increased. (A current
greater than 1A should not be supplied.)
As the voltage is increased, the valve should move
slowly in the direction.
4. Check the movement of the valve when the volt
age is cut off.
The valve should return in the direction.
INSPECTION PROCEDURE
Go to step [2].
± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONTROUBLESHOOTINGAT2±77

Check No.3 solenoid valve.
1. Jack up the vehicle.
2. Remove the oil pan.
3. Disconnect the solenoid connector
Measure resistance between terminal 1 and 2 of
the solenoid connector.
Resistance: 3.5 Ð 3.9

Check solenoid resistance
Check solenoid operation
Connect positive
lead with an 8 Ð 10 W bulb to
terminal 1 of solenoid connector and negative 
lead to terminal 2, then check the movement of the
valve.
When battery positive
voltage is applied.
direction in illustration
at left.
When battery positive
voltage is cut off.
Valve moves in
Valve moves in
direction in illustration
at left.
Replace No.3 solenoid valve.

Check solenoid's operation
1. Prepare a variable power supply.
2. Connect positive
lead of the variable power
supply to terminal 1 of solenoid connector and
negative  lead to terminal 2.
3. Check the movement of the valve when the
voltage is gradually increased. (A current
greater than 1A should not be supplied.)
As the voltage is increased, the valve should move
slowly in the direction.
4. Check the movement of the valve when the volt±
age is cut off.
The valve should return in the direction.
Go to step
INSPECTION PROCEDURE
± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONTROUBLESHOOTINGAT2±87

INSPECTION PROCEDURE
Check No.5 solenoid valve.
1. Jack up the vehicle.
2. Remove the oil pan.
Resistance: 3.6 Ð 4.0

Check solenoid resistance
Check solenoid operation
Connect positive
lead with an 8 Ð 10 W bulb to
terminal 1 of solenoid connector and negative 
lead to terminal 2, then check the movement of the
valve.
When battery positive
voltage is applied.direction in illustration
at left.
When battery positive
voltage is cut off.direction in illustration
at left.
Replace No.5 solenoid valve.

Check solenoid operation
Go to step
1. Disconnect the solenoid connector.
2. Measure resistance between terminals 1 and 2
of solenoid connector.
Valve moves in
Valve moves in
1. Prepare a variable power supply.
2. Connect positive
lead of the variable power
supply to terminal 1 of solenoid connector and
negative  lead to terminal 2.
3. Check the movement of the valve when the
voltage is gradually increased. (A current
greater than 1A should not be supplied.)
As the voltage is increased, the valve should move
slowly in the direction.
4. Check the movement of the valve when the volt±
age is cut off.
The valve should return in the direction.
± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONTROUBLESHOOTINGAT2±93

PRECAUTION
Take care to observe the doing precautions when performing inspections or removal and replacement of
body electrical related parts.
HEADLIGHT SYSTEM
wHalogen bulbs have pressurized gas inside and require special handling. They can burst if scratched or
dropped. Hold a bulb only by its plastic or metal case.
Don't touch the glass part of a bulb with bare hands.
SRS (SUPPLEMENTAL RESTRAINT SYSTEM)
wWork must be started after 90 seconds from the time the ignition switch is turned to the ºLOCKº position
and the negative (±) terminal cable is disconnected from the battery.
wWhen disconnecting any of the connectors in the SRS, be sure to lock the ignition switch and disconnect
the negative (±) terminal cable from the battery first. Since the connectors are twin lock type connectors,
disconnect the connectors only after releasing the first stage lock.
wWhen connecting SRS connectors, be sure to lock them securely. (If the connectors are not locked
securely, the system may not operate when needed.)
wAlways store the steering wheel pad with the pad surface facing upward. (Storing the pad with its metallic
surface up may lead to a serious accident if the SRS inflates for some reason.)
wWhen installing the spiral cable, be sure the vehicle is in the straight ahead condition and confirm that the
spiral cable is in the neutral position when it is installed.
wINFORMATION LABELS (NOTICE) are attached to the periphery of the SRS components. Follow the
NOTICE.
AUDIO SYSTEM
wIf the negative (±) terminal cable is disconnected from the battery, the preset AM, FM 1 and FM 2 stations
stored in memory are erased, so be sure to note the stations and reset them after the battery terminal is
reconnected.
wIf the negative (±) terminal cable is disconnected from the battery, the ºANTI±THEFT SYSTEMº will operate
when the cable is reconnected, but the radio, tape player and CD player will not operate. Be sure to input
the correct ID number so that the radio, tape player and CD player can be operated again.
MOBILE COMMUNICATION SYSTEM
wIf the vehicle is equipped with a mobile communication system, refer to precautions in the IN section. BE±2
± BODY ELECTRICAL SYSTEMPRECAUTION

PREPARATION
SST (SPECIAL SERVICE TOOLS)
09843±18020Diagnosis Check Wire
09808±14010Fuel Sender Gauge Tool Assy
09950±50010Puller C Set
RECOMMENDED TOOLS
09082±00050TOYOTA Electrical Tester Set


EQUIPMENT
 
 Voltmeter
 
 
 Ammeter 
 Ohmmeter 
 Test lead 
 Thermometer Engine oil level warning switch, Seat heater
 Syphon Brake fluid level warning switch
 Oil bath Engine oil level warning switch
 Bulb (3.4 W) Fuel sender gauge, Seat belt warning relay Bulb (21 W) Turn signal flasher relay Dry cell battery Fuel sender gauge 
 Heat light
 
 Seat heater
 Torque wrench 
 Masking tape Rear window defogger wire
 Tin foil Rear window defogger wire
SSM (SPECIAL SERVICE MATERIAL)
 

DuPont Paste No. 4817 or
equivalent
 

Rear window defogger
 
 
equivalent 
 
± BODY ELECTRICAL SYSTEMPREPARATIONBE±3

TROUBLESHOOTING
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
replace the part when it is found to be faulty.
USA:
 Trouble Parts name (See page)
 
 
 
 
 
 
 
Headlight does not light
(Taillight is normal)
 
 
 
 
 
 
 
1. FL MAIN
2. HEAD Fuse (LH, RH) (BE±5)
3. Headlight Control Relay (BE±16)
4. Headlight Dimmer Switch (BE±15)
5. Light Control Switch (BE±15)
6. Integration Relay (BE±17)
7. Wire Harness
8. Headlight Bulb
 
 
 
 
 
Headlight does not light
(Taillight does not light up)
 
 
 
 
 
1. FL MAIN
2. Light Control Switch (BE±15)
3. Integration Relay (BE±17)
4. Wire Harness
5. Headlight Bulb
 
 
 
Only one side light does not light
 
 
 
1. HEAD Fuse (LH, RH) (BE±5)
2. Headlight Bulb
3. Wire Harness
 
 
ºLo±Beamº does not light 
 
1. Headlight Dimmer Switch (BE±15)
2. Wire Harness
 
 
ºHi±Beamº does not light 
 
1. Headlight Dimmer Switch (BE±15)
2. Wire Harness
 

ºFlashº does not light 

1. Headlight Dimmer Switch (BE±15)
2. Wire Harness
CANADA:
 
 Trouble
 
 Parts name (See page)
 
 
 
 
 
 
 
 
Headlight does not light
(Taillight is normal)
 
 
 
 
 
 
 
 
1. FL MAIN
2. Headlight Control Relay
3. Daytime Running Light Relay (BE±18)
4. Daytime Running Light No.2 and No.3 Relay (BE±19)
5. Headlight Dimmer Switch (BE±15)
6. Light Control Switch (BE±15)
7. Integration Relay (BE±17)
8. Wire Harness
9. Headlight Bulb
 
 
 
 
 
Headlight does not light
(Taillight does not light up)
 
 
 
 
 
1. FL MAIN
2. Light Control Switch (BE±15)
3. Daytime Running Light Relay (BE±18)
4. Daytime Running Light No.2 and No.3 Relay (BE±19)
5. Integration Relay (BE±17)
6. Wire Harness
± BODY ELECTRICAL SYSTEMHEADLIGHT AND TAILLIGHT SYSTEMBE±11

 Trouble Parts name (See page)
 
 Only one side light does not light 
 
1. Headlight Bulb
2. Wire Harness
 
 ºLo±Beamº does not light (ALL) 
 
1. Headlight Control Relay (BE±16)
2. Wire Harness
 
 
 
ºLo±Beamº does not light (ONE SIDE)
 
 
 
1. HEAD LH±LWR Fuse (BE±5)
2. HEAD RH±LWR Fuse (BE±5)
3. Headlight Bulb
4. Wire Harness
 
 
 
 
ºHi±Beamº does not light (ALL)
 
 
 
 
1. Headlight Dimmer Switch (BE±15)
2. Daytime Running Light Relay (BE±18)
3. Daytime Running Light No.2 and No.3 Relay (BE±19)
4. Wire Harness
 
 
 
 
ºHi±Beamº does not light (ONE SIDE)
 
 
 
 
1. HEAD LH±UPR Fuse (BE±5)
2. HEAD RH±UPR Fuse (BE±5)
3. Headlight Bulb
4. Wire Harness
 
 
 
 
ºFlashº does not light
 
 
 
 
1. Headlight Dimmer Switch (BE±15)
2. Daytime Running Light Relay (BE±18)
3. Daytime Running Light No.2 and No.3 Relay (BE±19)
4. Wire Harness
 
 
 
ºAuto Turn±off Systemº dose not operate
 
 
 
1. Integration Relay (BE±17)
2. GAUGE Fuse (BE±6)
3. Wire Harness
4. Door Courtesy Switch (driver's) (BE±28)
 
 
 
 
 
Headlight does not light with light control SW in HEAD.
 
 
 
 
 
1. Integration Relay (BE±17)
2. Light Control Switch (BE±15)
3. Daytime Running Light Relay (BE±18)
4. Daytime Running Light No.2 and No.3 Relay (BE±19)
5. Wire Harness
 
 Headlight does not go out with light control SW in OFF 
 
1. Headlight Control Relay (BE±16)
2. Wire Harness
 
 
 
 
Taillight does not light with light control SW in TAIL
 
 
 
 
1. Taillight Control Relay (BE±16)
2. Integration Relay (BE±17)
3. Light Control Switch (BE±15)
4. Wire Harness
 
 
 
Taillight does not go out with light control SW in OFFª
 
 
 
1. Taillight Control Relay (BE±16)
2. Integration Relay (BE±17)
3. Light Control Switch (BE±15)
4. Wire Harness
 
 
 
 
 
 
Headlight and Taillight do not light with engine running and
light control SW in OFF
 
 
 
 
 
 
1. GAUGE Fuse (BE±6)
2. Daytime Running Light Relay (BE±18)
3. Daytime Running Light No.2 and No.3 Relay (BE±19)
4. Wire Harness
5. Generator L Terminal
6. Parking Brake Switch (BE±52)
BE±12± BODY ELECTRICAL SYSTEMHEADLIGHT AND TAILLIGHT SYSTEM