1995 TOYOTA SUPRA turn signal bulb

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.
 Trouble Parts name (See page)
 
 
 
ºHazardº and ºTurnº do not light up
 
 
 
1. Hazard Warning Switch (BE±22)
2. Turn Signal Flasher (BE±22)
3. Wire Harness
 
 
 
The flashing frequency is abnormal
 
 
 
1. Bulb
2. Turn Signal Flasher (BE±22)
3. Wire Harness
 Hazard warning light does not light up
(Turn is normal) 1. HAZ±HORN Fuse (BE±5)
2. Wire Harness
 
 Hazard warning light does not light up in one direction
 
 1. Hazard Warning Switch (BE±22)
2. Wire Harness
 
 
 
 
*1 Turn signal does not light up
 
 
 
 
1. Ignition Switch (BE±8)
2. TURN Fuse (BE±6)
3. Turn Signal Switch (BE±21)
4. Wire Harness
 
 
 
*2 Turn signal does not light up
 
 
 
1. TURN Fuse (BE±6)
2. Turn Signal Switch (BE±21)
3. Wire Harness
 
 Turn signal does not light up in one direction
 
 
1. Turn Signal Switch (BE±21)
2. Wire Harness
 
 Only one bulb does not light up
 
 
1. Bulb
2. Wire Harness
*1: Combination Meter, Wiper and Washer do not operate.
*
2: Combination Meter, Wiper and Washer are normal.
TURN SIGNAL SWITCH INSPECTION
INSPECT SWITCH CONTINUITY 
 Switch position
 
 Tester connection to
terminal number
 
 Specified condition
 
 Left turn
 
 A1 ± A5
 
 Continuity 
 Neutral
 
 ±
 
 No continuity
 Right turn A1 ± A8 Continuity
If continuity is not as specified, replace the switch.
± BODY ELECTRICAL SYSTEMTURN SIGNAL AND HAZARD WARNING SYSTEMBE±21

HAZARD WARNING SWITCH
INSPECTION
INSPECT SWITCH CONTINUITY
 
 Condition
 
 Tester connection to
terminal number
 
 Specified condition
 Switch OFF 7±10 Continuity 
 Switch ON
 
 7±8
4±5±6±9
 
 Continuity
 
 Illumination circuit
 
 2±3
 
 Continuity
If continuity is not as specified, replace the switch.
TURN SIGNAL FLASHER INSPECTION
INSPECT FLASHER OPERATION
(a) Connect the terminal 2 to battery positive (+) terminal and the
terminal 3 to battery negative (±) terminal.
(b) Connect the 2 turn signal light bulbs parallel to each other to
terminals 1 and 3, check that the bulbs flash.
HINT: The turn signal lights should flash between 60 and 120
times per minute. BE±22
± BODY ELECTRICAL SYSTEMTURN SIGNAL AND HAZARD WARNING SYSTEM

INDICATOR LIGHTS
TroubleParts name (See page) 
 
 SRS Indicator Light does not light up
 
 
 
1. Bulb
2. Wire Harness
3. Center Air Bag Sensor (RS Section)
 
 
 
ABS Indicator Light does not light up
 
 
 
1. Bulb
2. Wire Harness
3. Traction ECU (BR Section)
 
 
 
Malfunction Indicator Light does not light up
 
 
 
1. Bulb
2. ECM (EG Section)
3. Wire Harness
 
 
 
TRAC OFF Indicator Light does not light up
 
 
 
1. Bulb
2. Traction Solenoid Relay (BR Section)
3. Traction ECU (BR Section)
4. Wire Harness
 
 
 
Security Indicator Light does not light up
 
 
 
1. Light Emitting Diode
2. Theft Deterrent and Door Lock ECU (BE±123)
3. Wire Harness
 
 
 
 
A/T Shift Position Indicator Light does not light up
 
 
 
 
1. Bulb
2. Park/Neutral Position Switch (AT1 Section)
3. Light Control Rheostat (BE±54)
4. Meter Circuit Plate (BE±44)
5. Wire Harness
 
 
 
 
MANU Indicator Light does not light up
 
 
 
 
1. Bulb
2. ECM (EG Section)
3. Meter Circuit Plate (BE±44)
4. Wire Harness
 
 
 
 
O/D OFF Indicator Light does not light up
 
 
 
 
1. Bulb
2. O/D Main Switch
3. ECM (EG Section)
4. Meter Circuit Plate (BE±44)
5. Wire Harness
 
 
 
 
TRAC Indicator Light does not light up
 
 
 
 
1. Bulb
2. ABS and Traction ECU
3. Meter Circuit Plate (BE±44)
4. Wire Harness
 
 
 
Turn Indicator Light does not light up
 
 
 
1. Bulb
2. Turn Signal and Hazard Warning System (BE±20)
3. Meter Circuit Plate (BE±44)
4. Wire Harness
 
 
 
 
High Beam Indicator Light does not light up
 
 
 
 
1. Bulb
2. Headlight System (BE±10)
3. Meter Circuit Plate (BE±44)
4. Wire Harness
 
 
 
CRUISE Indicator Light does not light up
 
 
 
1. Bulb
2. Cruise Control ECU (BE±170)
3. Meter Circuit Plate (BE±44)
4. Wire Harness
± BODY ELECTRICAL SYSTEMCOMBINATION METERBE±43