Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Supra 1986-1987.1990.1995.1997 Approved Toyota Supra 1997 Body Electrical
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BE-1
BODY ELECTRICAL - BODY ELECTRICAL SYSTEM
BODY ELECTRICAL SYSTEM
BE0DL-01
PRECAUTION
Take care to observe the doing precautions when performing inspections or removal and replacement of
body electrical related parts.
1. HEADLIGHT SYSTEM
Halogen 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.
2. SRS (SUPPLEMENTAL RESTRAINT SYSTEM)
The SUPRA is equipped with an SRS (Supplemental Restraint System) such as the driver airbag and front
passenger airbag. Failure to carry out service operation in the correct sequence could cause the SRS to
unexpectedly deploy during servicing, possibly leading to a serious accident. Before servicing (including re-
moval or installation of parts, inspection or replacement), be sure to read the precautionary notices in the
RS section.
3. AUDIO SYSTEM
D If the negative (-) terminal cable is disconnected from the battery, the preset AM, FM 1 and FM 2 sta-
tions stored in memory are erased, so be sure to note the stations and reset them after the battery
terminal is reconnected.
D If the negative (-) terminal cable is disconnected from the battery, the "ANTI-THEFT SYSTEM" 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.
4. MOBILE COMMUNICATION SYSTEM
If the vehicle is equipped with a mobile communication system, refer to precautions in the IN section.
1997 SUPRA (RM502U)
Author : Date : 1979
BE-2
BODY ELECTRICAL - BODY ELECTRICAL SYSTEM
BE0DM-02
PROBLEM SYMPTOMS TABLE
IGNITION SWITCH AND KEY UNLOCK WARNING SWITCH
Symptom Suspect Area See page
Ignition switch is not set to each position. 1. Ignition Switch BE-13
1. GAUGE Fuse (J/B No.1)
2. Key Unlock Warning Switch BE-13
"Key unlock warning system" does not operate.
3. Door Courtesy Switch BE-28
4. Wire Harness
USA:
HEADLIGHT AND TAILLIGHT SYSTEM
Symptom Suspect Area See page
1. Headlight Bulb
2. HEAD (LH, RH) Fuse (R/B No.2)
3. Headlight Control Relay (R/B No.2) BE-17
Headlight does not light. (Taillight is normal) 4. Integration Relay BE-13
5. Headlight Dimmer Switch BE-17
6. Light Control Switch BE-17
7. Wire Harness
1. Headlight Bulb
2. Integration Relay BE-13
Headlight does not light. (Taillight does not light up)
3. Light Control Switch BE-17
4. Wire Harness
1. Headlight Bulb
Only one side light does not light. 2. HEAD (LH, RH) Fuse (R/B No.2)
3. Wire Harness
1. Headlight Dimmer Switch BE-17
"Lo-Beam" does not light.
2. Wire Harness
1. Headlight Dimmer Switch BE-17
"Hi-Beam" does not light.
2. Wire Harness
1. Headlight Dimmer Switch BE-17
"Flash" does not light.
2. Wire Harness
1997 SUPRA (RM502U)
Author : Date : 1980
BE-3
BODY ELECTRICAL - BODY ELECTRICAL SYSTEM
CANADA:
HEADLIGHT AND TAILLIGHT SYSTEM
Symptom Suspect Area See page
1. Headlight Bulb
2. Headlight Control Relay (R/B No.2) BE-17
3. D.R.L. Relay BE-17
4. D.R.L. No.2 Relay (R/B No.2) BE-17
Headlight does not light. (Taillight is normal) 5. D.R.L. No.3 Relay BE-17
6. Integration Relay BE-13
7. Headlight Dimmer Switch BE-17
8. Light Control Switch BE-17
9. Wire Harness
1. D.R.L. Relay BE-17
2. D.R.L. No.2 Relay (R/B No.2) BE-17
Headlight does not light. 3. D.R.L. No.3 Relay BE-17
(Taillight does not light up) 4. Integration Relay BE-13
5. Light Control Switch BE-17
6. Wire Harness
1. Headlight Bulb
Only one side light does not light.
2. Wire Harness
1. Headlight Control Relay (R/B No.2) BE-17
"Lo-Beam" does not light (ALL).
2. Wire Harness
1. Headlight Bulb
2. HEAD LH-LWR Fuse (R/B No.2)
"Lo-Beam" does not light (ONE SIDE).
3. HEAD RH-LWR Fuse (R/B No.2)
4. Wire Harness
1. D.R.L. Relay BE-17
2. D.R.L. No.2 Relay (R/B No.2) BE-17
"Hi-Beam" does not light (ALL). 3. D.R.L. No.3 Relay BE-17
4. Headlight Dimmer Switch BE-17
5. Wire Harness
1. Headlight Bulb
2. HEAD LH-UPR Fuse (R/B No.2)
"Hi-Beam" does not light (ONE SIDE).
3. HEAD RH-UPR Fuse (R/B No.2)
4. Wire Harness
1. D.R.L. Relay BE-17
2. D.R.L. No.2 Relay (R/B No.2) BE-17
"Flash" does not light. 3. D.R.L. No.3 Relay BE-17
4. Headlight Dimmer Switch BE-17
5. Wire Harness
1. GAUGE Fuse (J/B No.1)
2. Integration Relay BE-13
"Auto Turn-of f System" dose not operate.
3. Door Courtesy Switch (Driver's) BE-28
4. Wire Harness
1. Integration Relay BE-13
2. D.R.L. Relay BE-17
3. D.R.L. No.2 Relay (R/B No.2) BE-17
Headlight does not light with light control SW in HEAD.
4. D.R.L. No.3 Relay BE-17
5. Light Control Switch BE-17
6. Wire Harness
1. Headlight Control Relay (R/B No.2) BE-17
Headlight does not go out with light control SW in OFF.
2. Wire Harness
1997 SUPRA (RM502U)
Author : Date : 1981
BE-4
BODY ELECTRICAL - BODY ELECTRICAL SYSTEM
1. Taillight Relay (J/B No.1) BE-17
2. Integration Relay BE-13
Taillight does not light with light control SW in TAIL.
3. Light Control Switch BE-17
4. Wire Harness
1. Taillight Relay (J/B No.1) BE-17
2. Integration Relay BE-13
Taillight does not go out with light control SW in OFF.
3. Light Control switch BE-17
4. Wire Harness
1. GAUGE Fuse (J/B No.1)
2. Generator L Terminal
3. D.R.L. Relay BE-17
Headlight and Taillight do not light with engine running and light
4. D.R.L. No.2 Relay (R/B No.2) BE-17
control SW in OFF.
5. D.R.L. No.3 Relay BE-17
6. Parking Brake Switch BE-43
7. Wire Harness
FOG LIGHT SYSTEM
Symptom Suspect Area See page
1. FOG Fuse (R/B No.2)
2. HEAD Fuse (R/B No.2)
Fog light does not light with light control SW HEAD.
3. Fog Light Relay (R/B No.2) BE-23
(Headlight is normal.)
4. Fog Light Switch BE-23
5. Wire Harness
Fog light does not light with light control SW HEAD. 1. Headlight and Taillight system BE-15
(Headlight does not light) 2. Wire Harness
1. Bulb
Only one light does not light.
2. Wire Harness
TURN SIGNAL HAZARD WARNING SYSTEM
Symptom Suspect Area See page
1. Hazard Warning Switch BE-26
"Hazard" and "Turn" do not light up. 2. Turn Signal Flasher BE-26
3. Wire Harness
1. Bulb
The flashing frequency is abnormal. 2. Turn Signal Flasher BE-26
3. Wire Harness
Hazard warning light does not light up. 1. HAZ-HORN Fuse (R/B No.2)
(Turn is normal.) 2. Wire Harness
1. Hazard Warning Switch BE-26
Hazard warning light does not light up in one direction.
2. Wire Harness
1. TURN Fuse (J/B No.1)
Turn signal does not light up. 2. Ignition Switch BE-13
(Combination meter, wiper and washer do not operate.) 3. Turn Signal Switch BE-26
4. Wire Harness
1. TURN Fuse (J/B No.1)
Turn signal does not light up. 2. Turn Signal Switch BE-26
3. Wire Harness
1. Turn Signal Switch BE-26
Turn signal does not light up in one direction.
2. Wire Harness
1. Bulb
Only one bulb does not light up.
2. Wire Harness
1997 SUPRA (RM502U)
Author : Date : 1982
BE-5
BODY ELECTRICAL - BODY ELECTRICAL SYSTEM
INTERIOR LIGHT SYSTEM
Symptom Suspect Area See page
1. Bulb
Only one light does not light up.
2. Wire Harness
1. DOME Fuse (R/B No.2)
Interior light does not light up (All). 2. Integration Relay BE-28
3. Wire Harness
1. Integration Relay BE-28
2. Door Courtesy Switch BE-28
"Illuminated Entry System" does not operate. 3. Door Key Lock and Unlock Switch DI-656
4. Door Unlock Detection Switch DI-638
5. Wire Harness
1. Bulb
Front personal light does not light up. 2. Front Personal Light BE-28
3. Wire Harness
1. Bulb
Luggage room light does not light up.
2. Luggage Room Light Switch BE-28
BACK-UP LIGHT SYSTEM
Symptom Suspect Area See page
1. Bulb
2. GAUGE Fuse (J/B No.1)
3. Ignition Switch BE-13
Back Up Light does not light up. 4. Back-up Light Switch (M/T) BE-31
5. Park/Neutral Position Switch (A/T) DI-354
DI-423
6. Wire Harness
Back Up Light remains always on. 1. Wire Harness
1. Bulb
Only one light does not light up.
2. Wire Harness
STOP LIGHT SYSTEM
Symptom Suspect Area See page
1. Bulb
2. STOP Fuse (J/B No.1)
Stop light does not light up.
3. Stop Light Switch BE-33
4. Wire Harness
1. Stop Light Switch BE-33
Stop light remains always on.
2. Wire Harness
1. Bulb
Only one light does not light up.
2. Wire Harness
1997 SUPRA (RM502U)
Author : Date : 1983
BE-6
BODY ELECTRICAL - BODY ELECTRICAL SYSTEM
WIPER AND WASHER SYSTEM
Symptom Suspect Area See page
1. WIPER Fuse (J/B No.1)
2. Ignition Switch BE-13
Wipers and washers do not operate.
3. Wiper and Washer Switch BE-35
4. Wire Harness
1. Front Wiper and Washer Switch BE-35
Front wiper does not operate. 2. Front Wiper Motor BE-35
3. Wire Harness
1. Rear Wiper and Washer Switch BE-35
Rear wiper does not operate. 2. Rear Wiper Motor and Relay BE-35
3. Wire Harness
1. Front Wiper and Washer Switch BE-35
Front washer does not operate. 2. Washer Motor BE-35
3. Wire Harness
1. Rear Wiper and Washer Switch BE-35
Rear washer does not operate. 2. Washer Motor BE-35
3. Wire Harness
COMBINATION METER
METER, GAUGES AND ILLUMINATION:
Symptom Suspect Area See page
1. GAUGE Fuse (J/B No.1)
Tachometer, Fuel Gauge and Engine Coolant Temperature
2. Meter Circuit BE-40
Gauge do not operate.
3. Wire Harness
1. Vehicle Speed Sensor BE-43
Speedometer does not operate. 2. Meter Circuit BE-40
3. Wire Harness
1. Igniter
2. ECM DI-1
Tachometer does not operate. DI-145
3. Meter Circuit BE-40
4. Wire Harness
1. Fuel Receiver Gauge BE-43
2. Fuel Sender Gauge BE-43
Fuel Gauge does not operate or abnormal operation.
3. Meter Circuit BE-40
4. Wire Harness
1. Engine Coolant Temperature Receiver Gauge BE-43
Engine Coolant Temperature Gauge does not operate or 2. Engine Coolant Temperature Sender Gauge BE-43
abnormal operation. 3. Meter Circuit BE-40
4. Wire Harness
1. TAIL Fuse (J/B No.1)
2. Light Control Rheostat BE-43
All illumination lights do not light up.
3. Meter Circuit BE-40
4. Wire Harness
1. Bulb
Only one illumination light does not light up.
2. Meter Circuit BE-40
1997 SUPRA (RM502U)
Author : Date : 1984
BE-7
BODY ELECTRICAL - BODY ELECTRICAL SYSTEM
WARNING LIGHTS:
Symptom Suspect Area See page
1. Bulb
2. IGN Fuse (J/B No.1)
Warning lights do not light up. 3. Ignition Switch BE-13
(Except Discharge and Door Open) 4. Meter Circuit BE-40
5. Generator
6. Wire Harness
1. Bulb
2. Brake Fluid Level Warning Switch BE-43
3. Parking Brake Switch BE-43
Brake Warning Light does not light up.
4. Bulb Check Relay
5. Meter Circuit BE-40
6. Wire Harness
1. Bulb
2. Seat Belt Buckle Switch BE-43
Seat Belt Warning Light does not light up. 3. Integration Relay BE-13
4. Meter Circuit BE-40
5. Wire Harness
1. Bulb
2. Engine Oil Level Warning Switch BE-43
Engine Oil Level Warning Light does not light up.
3. Meter Circuit BE-40
4. Wire Harness
1. Bulb
Low Oil Pressure Warning Light does not light up. 2. Low Oil Pressure Warning Switch BE-43
3. Meter Circuit BE-40
1. Bulb
2. DOME Fuse (R/B No.2)
3. Door Courtesy Switch BE-28
Door Open Warning Light does not light up. 4. Luggage Room Light Switch BE-28
5. Integration Relay BE-13
6. Meter Circuit BE-40
7. Wire Harness
1. Bulb
2. Telltale Light Circuit BE-40
Master Warning Light does not light up.
3. Meter Circuit BE-40
4. Wire Harness
INDICATOR LIGHTS:
Symptom Suspect Area See page
1. Bulb
SRS Indicator Light does not light up. 2. Center Airbag Sensor DI-555
3. Wire Harness
1. Bulb
ABS Indicator Light does not light up. 2. Traction ECU DI-499
3. Wire Harness
1. Bulb
2. ECM DI-1
Malfunction Indicator Light does not light up.
DI-145
3. Wire Harness
1. Bulb
2. Traction Solenoid Relay DI-499
TRAC OFF Indicator Light does not light up.
3. Traction ECU DI-499
4. Wire Harness
1997 SUPRA (RM502U)
Author : Date : 1985
BE-8
BODY ELECTRICAL - BODY ELECTRICAL SYSTEM
1. Light Emitting Diode
Security Indicator Light does not light up. 2. Theft Deterrent and Door Lock ECU DI-608
3. Wire Harness
1. Bulb
2. Park/Neutral Position Switch DI-354
DI-423
A/T Shift Position Indicator Light does not light up.
3. Light Control Rheostat BE-43
4. Meter Circuit BE-40
5. Wire Harness
1. Bulb
2. ECM
MANU Indicator Light does not light up.
3. Meter Circuit BE-40
4. Wire Harness
1. Bulb
2. O/D Main Switch BE-43
3. ECM DI-1
O/D OFF Indicator Light does not light up.
DI-145
4. Meter Circuit BE-40
5. Wire Harness
1. Bulb
2. ABS and Traction ECU
TRAC Indicator Light does not light up.
3. Meter Circuit BE-40
4. Wire Harness
1. Bulb
2. Turn Signal and Hazard Warning System BE-25
Turn Indicator Light does not light up.
3. Meter Circuit BE-40
4. Wire Harness
1. Bulb
2. Headlight and Taillight System BE-15
High Beam Indicator Light does not light up.
3. Meter Circuit BE-40
4. Wire Harness
1. Bulb
2. Cruise Control ECU DI-660
CRUISE Indicator Light does not light up.
3. Meter Circuit BE-40
4. Wire Harness
1. Bulb
2. Traction ECU
SNOW Indicator Light does not light up.
3. Meter Circuit BE-40
4. Wire Harness
ELECTRIC TENSION REDUCER SYSTEM
Symptom Suspect Area See page
Tension Reducer does not operate. 1. ECU-IG fuse (J/B No.1)
(Driver's and Passenger's) 2. Wire Harness
1. Buckle Switch BE-54
Tension Reducer does not operate. (Only one side) 2. Tension Reducer Solenoid BE-43
3. Wire Harness
1997 SUPRA (RM502U)
Author : Date : 1986
BE-9
BODY ELECTRICAL - BODY ELECTRICAL SYSTEM
DEFOGGER SYSTEM
Symptom Suspect Area See page
1. GAUGE Fuse (J/B No.1)
2. DEFOG Fuse (J/B No.1)
3. Defogger Relay (R/B No.4) BE-56
All defogger systems do not operate.
4. Defogger Switch BE-56
5. A/C Amplifier DI-71 1
6 Wire Harness
1. Defogger Wires BE-56
Rear window defogger does not operate.
2. Wire Harness
1. MIR-HTR Fuse (J/B No.1)
Mirror defogger does not operate. 2. Mirror Defogger BE-56
3. Wire Harness
POWER WINDOW CONTROL SYSTEM
Symptom Suspect Area See page
1. POWER Fuse (R/B No.2)
2. DOOR Fuse (J/B No.1)
Power window does not operate.
3. Ignition Switch BE-13
(Power door lock does not operate.)
4. Power Window Master Switch BE-60
5. Wire Harness
1. GAUGE Fuse (J/B No.1)
2. Power Main Relay (J/B No.1) BE-60
Power Window does not operate.
3. Ignition Switch BE-13
(Power door lock is normal.)
4. Power Window Master Switch BE-60
5. Wire Harness
"One Touch Power Window System" does not operate. 1. Power Window Master Switch BE-60
1. Power Window Master Switch BE-60
2. Power Window Switch BE-60
Only one window glass does not move.
3. Power Window Motor BE-60
4. Wire Harness
"Window Lock System" does not operate. 1. Power Window Master Switch BE-60
Illumination does not light up. 1. Power Window Master Switch BE-60
POWER SEAT CONTROL SYSTEM
Symptom Suspect Area See page
1. POWER Fuse (R/B No.2)
2. DOOR Fuse (J/B No.1)
Power seat does not operate.
3. Power Seat Switch BE-65
4. Wire Harness
1. Power Seat Switch BE-65
"Slide operation" does not operate. 2. Sliding Motor BE-65
3. Wire Harness
1. Power Seat Switch BE-65
"Reclining operation" does not operate. 2. Reclining Motor BE-65
3. Wire Harness
1997 SUPRA (RM502U)
Author : Date : 1987
BE-10
BODY ELECTRICAL - BODY ELECTRICAL SYSTEM
POWER MIRROR CONTROL SYSTEM
Symptom Suspect Area See page
1. RAD No.2 Fuse (J/B No.1)
2. Mirror Switch BE-68
Mirror does not operate.
3. Mirror Motor BE-68
4. Wire Harness
1. Mirror Switch BE-68
Mirror operates abnormally. 2. Mirror Motor BE-68
3. Wire Harness
SEAT HEATER SYSTEM
Symptom Suspect Area See page
1. SEAT HTR Fuse (J/B No.1)
Seat heaters do not operate. (Driver's and Passenger's)
2. Wire Harness
1. Seat Heater Switch (Driver's) BE-70
Driver's seat heater does not operate. 2. Seat Heater BE-70
3. Wire Harness
1. Seat Heater Switch (Passenger's) BE-70
Passenger's seat heater does not operate. 2. Seat Heater BE-70
3. Wire Harness
Seat heater temperature is too hot. 1. Seat Heater BE-70
1997 SUPRA (RM502U)
Author : Date : 1988
BE-1 1
BODY ELECTRICAL - POWER SOURCE
POWER SOURCE
BE0DN-02
LOCATION
R/B No.5
R/B No.2
R/B No.4
R/B No.1
Z18242
1997 SUPRA (RM502U)
Author : Date : 1989
BE-12 BODY ELECTRICAL - IGNITION SWITCH AND KEY UNLOCK WARNING
SWITCH
IGNITION SWITCH AND KEY UNLOCK WARNING SWITCH
BE0DO-02
LOCATION
Ignition Switch
D Key Unlock Warning Switch
Z18243
1997 SUPRA (RM502U)
Author : Date : 1990
BODY ELECTRICAL - IGNITION SWITCH AND KEY UNLOCK WARNING BE-13
SWITCH
BE1L3-01
INSPECTION
1. INSPECT IGNITION SWITCH CONTINUITY
Switch position Tester connection Specified condition
LOCK - No continuity
ACC 5-7 Continuity
ON 4 - 5 - 7, 2 - 3 Continuity
START 4 - 7 - 8, 1 - 2 - 3 Continuity
Z09193 If continuity is not as specified, replace the switch.
2. INSPECT KEY UNLOCK WARNING SWITCH CONTI-
NUITY
OFF
Condition Tester connection Specified condition
ON SW OFF
- No continuity
(Key removed)
SW ON (Key set) 1-2 Continuity
If continuity is not as specified, replace the switch.
Z14750
3. Key Unlock Warning System:
INSPECT INTEGRATION RELAY OPERATION
(a) Connect the positive (+) lead from the battery to terminal
1, the negative (-) lead to terminals 5 and 10..
(b) Check the buzzer sounds when the negative (-) lead from
the battery is connected to terminal 6..
If operation is not as specified, replace the relay.
N16845
1997 SUPRA (RM502U)
Author : Date : 1991
BE-14 BODY ELECTRICAL - IGNITION SWITCH AND KEY UNLOCK WARNING
SWITCH
Junction Block Side 4. INSPECT RELAY CIRCUIT
Light Auto Turn Off System:
Remove the relay from junction block and inspect the connec-
tors on the wire harness and junction block side, as shown in
Connector "A"
the chart.
Wire Harness Side
Connector "B" Z07373
Tester connection Condition Specified condition
A6 - Ground Driver's door courtesy switch OFF No continuity
A6 - Ground Driver's door courtesy switch ON Continuity
A10 - Ground Constant Continuity
B1 - Ground Light control switch position OFF or TAIL No continuity
B1 - Ground Light control switch position HEAD Continuity
B4 - Ground Light control switch position OFF No continuity
B4 - Ground Light control switch position TAIL or HEAD Continuity
A1 - Ground Constant Battery positive voltage
A7 - Ground Ignition switch position LOCK or ACC No voltage
A7 - Ground Ignition switch position ON Battery positive voltage
B2 - Ground Constant Battery positive voltage
B3 - Ground Constant Battery positive voltage
If the circuit is as specified, try replacing the relay with a new
one.
If the circuit not as specified, inspect the circuits connected to
other parts.
1997 SUPRA (RM502U)
Author : Date : 1992
BE-15
BODY ELECTRICAL - HEADLIGHT AND TAILLIGHT SYSTEM
HEADLIGHT AND TAILLIGHT SYSTEM
BE0DQ-01
LOCATION
Headlights
R/B No.2
D Headlight Control Relay
D.R.L. No.3 Relay* D Headlight Control Relay
(D.R.L.No.2 Relay)
D HEAD (LH) Fuse
Front Side Marker D HEAD (RH) Fuse
D HEAD (LH-LWR) Fuse*
D HEAD (LH-LWR) Fuse*
D.R.L. Main Relay* D HEAD (LH-UPR) Fuse*
D HEAD (RH-UPR) Fuse*
Combination Switch
D Light Control Switch
D Headlight Dimmer Switch
Integration Relay
J/B No.1
D Taillight Relay
D GAUGE Fuse
D TAIL Relay
Rear Combination Lights
Rear Side Marker D Taillights
D.R.L. : Daytime Running Light
* : CANADA models
Z18223
1997 SUPRA (RM502U)
Author : Date : 1993
BE-16
BODY ELECTRICAL - HEADLIGHT AND TAILLIGHT SYSTEM
BE0DR-02
COMPONENTS
Light Control Switch
Connector
Headlight Dimmer Switch
Ball
Wiper and
Washer Switch
Spiral Cable
Z18244
1997 SUPRA (RM502U)
Author : Date : 1994
BE-17
BODY ELECTRICAL - HEADLIGHT AND TAILLIGHT SYSTEM
BE0DS-02
HEAD INSPECTION
1. INSPECT LIGHT CONTROL SWITCH CONTINUITY
TAIL
Switch position Tester connection Specified condition
OFF - No continuity
TAIL A2 - A11 Continuity
HEAD A2 - A11 - A13 Continuity
If continuity is not as specified, replace the switch.
Flash
2. INSPECT HEADLIGHT DIMMER SWITCH CONTINU-
ITY
Switch position Tester connection Specified condition
Flash A9 - A12 - A14 Continuity
Low beam A3 - A9 Continuity
High beam A9 - A12 Continuity
If continuity is not as specified, replace the switch.
Connector "A"
Z09366
3. INSPECT HEADLIGHT CONTROL RELAY CONTINU-
ITY
3 4
Condition Tester connection Specified condition
4 3 Constant 3-4 Continuity
Apply B+ between
1 2 1-2 Continuity
terminal 3 and 4.
1 2 If continuity is not as specified, replace the relay.
Z09181
4. INSPECT TAILLIGHT RELAY CONTINUITY
Condition Tester connection Specified condition
3 1 Constant 1-2 Continuity
2 1
Apply B+ between
3-5 Continuity
terminals 1 and 2.
5 5 3
2 If continuity is not as specified, replace the relay.
5. Light Auto Turn Off System:
INSPECT INTEGRATION RELAY CIRCUIT (See page
Z05930
BE-13 )
1997 SUPRA (RM502U)
Author : Date : 1995
BE-18
BODY ELECTRICAL - HEADLIGHT AND TAILLIGHT SYSTEM
Wire Harness Side 6. INSPECT DOOR COURTESY SWITCH CONTINUITY
(See page BE-28 )
7. CANADA models only:
INSPECT D.R.L. MAIN RELAY CIRCUIT
Disconnect the connector from relay and inspect the connector
on wire harness side, as shown.
Z07503
Tester connection Condition Specified condition
Headlight dimmer switch position Low beam or
5 - Ground No continuity
high beam
5 - Ground Headlight dimmer switch position Flash Continuity
8 - Ground Parking brake switch position OFF No continuity
8 - Ground Parking brake switch position ON Continuity
16 - Ground Headlight dimmer switch position Low beam No continuity
Headlight dimmer switch position Flash or High
16 - Ground Continuity
beam
13 - Ground Constant Continuity
18 - Ground Constant Continuity
2 - Ground Ignition switch position LOCK or ACC No voltage
2 - Ground Ignition switch position ON Battery positive voltage
11 - Ground Engine Stop No voltage
11 - Ground Engine Running Battery positive voltage
15 - Ground
Constant Battery positive voltage
17 - Ground
If the circuit is as specified, try replacing the relay with a new
one.
If the circuit is not as specified, inspect the circuit connected to
other parts.
8. INSPECT D.R.L. NO.2 RELAY CONTINUITY
Condition Tester connection Specified condition
3 4
Constant 3-4 Continuity
4 3
Apply B+ between
1-2 Continuity
terminals 3 and 4.
1 2
If continuity is not as specified, replace the relay.
1 2
Z09181
1997 SUPRA (RM502U)
Author : Date : 1996
BE-19
BODY ELECTRICAL - HEADLIGHT AND TAILLIGHT SYSTEM
9. INSPECT D.R.L. NO.3 RELAY CONTINUITY
B1 B3 A2
A3
Connector B Connector A
B2 B4 A1 A5
Z14743
Tester connection Condition Specified condition
A1 - B3 Constant Continuity
A3 - A5 Constant Continuity
B3 - B4 Constant Continuity
Apply battery positive voltage
A2 - A5 Continuity
between terminal A1 and B3.
Apply battery positive voltage
B1 - B2 Continuity
between terminal B3 and B4.
If continuity is not as specified, replace the relay.
10. INSPECT PARKING BRAKE SWITCH CONTINUITY
(See page BE-43 )
1997 SUPRA (RM502U)
Author : Date : 1997
BE-20
BODY ELECTRICAL - HEADLIGHT AND TAILLIGHT SYSTEM
BE0DT-01
ADJUSTMENT
Adjusting Screw B
Adjusting Screw A
Adjusting Nut C
N09536
1. Adjusting headlight aim only:
INSPECT HEADLIGHT AIM
Do the following before inspection.
D Make sure the body around the headlight is not de-
formed.
D Park the vehicle on a level spot.
D The driver gets into the driver's seat and puts the
vehicle in a state ready for driving (with a full tank).
D Bounce the vehicle several times.
2. Adjusting headlight aim only:
ADJUST HEADLIGHT VERTICAL ALIGNMENT
Bubble If the bubble is outside the acceptable range of the beam angle
gauge, adjust it using adjusting screw A.
Acceptable
range
N08860
3. Adjusting headlight aim only:
ADJUST HEADLIGHT HORIZONTAL ALIGNMENT
If the "0" moves away from the mark beyond the acceptable
range, adjust the "0" back to the mark using adju◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo