TOYOTA SUPRA 1997 Service Repair Manual

Z18223
D.R.L. No.3 Relay*

Combination Switch
Light Control SwitchD.R.L. Main Relay* Headlights
Front Side MarkerR/B No.2
Headlight Control Relay
Headlight Control Relay
(D.R.L.No.2 Relay)
HEAD (LH) Fuse
HEAD (RH) Fuse
HEAD (LH-LWR) Fuse*
HEAD (LH-UPR) Fuse*
HEAD (RH-UPR) Fuse*
Integration Relay
J/B No.1
Taillight Relay
GAUGE Fuse
TAIL Relay
Rear Side MarkerRear Combination Lights
: Daytime Running Light
: CANADA models D.R.L. Headlight Dimmer SwitchHEAD (LH-LWR) Fuse*
Taillights
*























BE0DQ-01
- BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
BE-15
1993 Author
: Date
:
1997 SUPRA (RM502U)
HEADLIGHT AND TAILLIGHT SYSTEM
LOCATION

BE0DR-02
Z18244
Spiral Cable Light Control Switch
Connector
BallHeadlight Dimmer Switch
Wiper and
Washer Switch BE-16
- BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
1994 Author
: Date
:
1997 SUPRA (RM502U)
COMPONENTS

Z09366
HEAD
TAIL
Connector ºAºFlash
BE0DS-02
Z09181
34
2 14
3
1
2
Z05930
3
5
21
531 2
- BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
BE-17
1995 Author
: Date
:
1997 SUPRA (RM502U)
INSPECTION
1. INSPECT LIGHT CONTROL SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
OFF-No continuity
TAILA2 - A11Continuity
HEADA2 - A11 - A13Continuity
If continuity is not as specified, replace the switch.
2. INSPECT HEADLIGHT DIMMER SWITCH CONTINU-
ITY
Switch positionTester connectionSpecified condition
FlashA9 - A12 - A14Continuity
Low beamA3 - A9Continuity
High beamA9 - A12Continuity
If continuity is not as specified, replace the switch.
3. INSPECT HEADLIGHT CONTROL RELAY CONTINU-
ITY
ConditionTester connectionSpecified condition
Constant3 - 4Continuity
Apply B+ between
terminal 3 and 4.1 - 2Continuity
If continuity is not as specified, replace the relay.
4. INSPECT TAILLIGHT RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant1 - 2Continuity
Apply B+ between
terminals 1 and 2.3 - 5Continuity
If continuity is not as specified, replace the relay.
5. Light Auto Turn Off System:
INSPECT INTEGRATION RELAY CIRCUIT (See page
BE-13)

Z07503
Wire Harness Side
Z09181
34
2 143
12 BE-18
- BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
1996 Author
: Date
:
1997 SUPRA (RM502U)
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.
Tester connectionConditionSpecified condition
5 - GroundHeadlight dimmer switch position Low beam or
high beamNo continuity
5 - GroundHeadlight dimmer switch position FlashContinuity
8 - GroundParking brake switch position OFFNo continuity
8 - GroundParking brake switch position ONContinuity
16 - GroundHeadlight dimmer switch position Low beamNo continuity
16 - GroundHeadlight dimmer switch position Flash or High
beamContinuity
13 - GroundConstantContinuity
18 - GroundConstantContinuity
2 - GroundIgnition switch position LOCK or ACCNo voltage
2 - GroundIgnition switch position ONBattery positive voltage
11 - GroundEngine StopNo voltage
11 - GroundEngine RunningBattery positive voltage
15 - Ground
17 - GroundConstantBattery positive voltage
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
ConditionTester connectionSpecified condition
Constant3 - 4Continuity
Apply B+ between
terminals 3 and 4.1 - 2Continuity
If continuity is not as specified, replace the relay.

Z14743
Connector B
Connector AB1
B3
B2B4
A1 A5A3 A2
- BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
BE-19
1997 Author
: Date
:
1997 SUPRA (RM502U)
9. INSPECT D.R.L. NO.3 RELAY CONTINUITY
Tester connectionConditionSpecified condition
A1 - B3ConstantContinuity
A3 - A5ConstantContinuity
B3 - B4ConstantContinuity
A2 - A5Apply battery positive voltage
between terminal A1 and B3.Continuity
B1 - B2Apply battery positive voltage
between terminal B3 and B4.Continuity
If continuity is not as specified, replace the relay.
10. INSPECT PARKING BRAKE SWITCH CONTINUITY
(See page BE-43)

BE0DT-01
N09536
Adjusting Screw AAdjusting Screw B
Adjusting Nut C
N08860
Bubble
Acceptable
range
N08861
Acceptable
range BE-20
- BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
1998 Author
: Date
:
1997 SUPRA (RM502U)
ADJUSTMENT
1. Adjusting headlight aim only:
INSPECT HEADLIGHT AIM
Do the following before inspection.

Make sure the body around the headlight is not de-
formed.

Park the vehicle on a level spot.

The driver gets into the driver's seat and puts the
vehicle in a state ready for driving (with a full tank).

Bounce the vehicle several times.
2. Adjusting headlight aim only:
ADJUST HEADLIGHT VERTICAL ALIGNMENT
If the bubble is outside the acceptable range of the beam angle
gauge, adjust it using adjusting screw A.
3. Adjusting headlight aim only:
ADJUST HEADLIGHT HORIZONTAL ALIGNMENT
If the º0º moves away from the mark beyond the acceptable
range, adjust the º0º back to the mark using adjusting screw B.

N08860
Bubble
Acceptable
range
N09725
Unlock
Lock
Range Acceptable
- BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
BE-21
1999 Author
: Date
:
1997 SUPRA (RM502U)
4. Replacing headlight:
REPLACE HEADLIGHT
5. Replacing headlight:
INSPECT HEADLIGHT AIM
Do the following before inspection.

Make sure the body around the headlight is not de-
formed.

Park the vehicle on a level spot.

The driver gets into the driver's seat and puts the
vehicle in a state ready for driving (with a full tank).

Bounce the vehicle several times.
6. Replacing headlight:
ADJUST HEADLIGHT IN VERTICAL ALIGNMENT
(a) Using adjusting screw A, adjust the headlight aim to within
the specifications.
(b) Make sure the gauge bubble is within the acceptable
range.
HINT:
If the gauge bubble is outside the acceptable range, check that
the vehicle is parked on a level spot.
Readjust the headlight aim after parking the vehicle on a level
spot.
7. Replacing headlight:
ADJUST HEADLIGHT IN HORIZONTAL ALIGNMENT
(a) Using adjusting screw B, adjust the headlight aim to within
the specifications.
(b) Using adjusting nut C, adjust the º0º back to the mark.
HINT:
For adjustment, pull nut C to the rear vehicle to free it. After ad-
justment, check that the nut C is locked in.

BE0DU-03
Z18225
Headlights

Fog Lights
R/B No.2

Fog Light Relay

FOG Fuse

HEAD Fuse
Fog Light Switch BE-22
- BODY ELECTRICALFOG LIGHT SYSTEM
2000 Author
: Date
:
1997 SUPRA (RM502U)
FOG LIGHT SYSTEM
LOCATION

N19593
ON
Connector ºAº
BE0DV-03
Z07377
- BODY ELECTRICALFOG LIGHT SYSTEM
BE-23
2001 Author
: Date
:
1997 SUPRA (RM502U)
INSPECTION
1. INSPECT FOG LIGHT SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
OFF-No continuity
ONA6 - A7Continuity
If continuity is not as specified, replace the switch.
2. INSPECT FOG LIGHT RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant1 - 2Continuity
Apply B+ between
terminals 1 and 2.3 - 5Continuity
If continuity is not as specified, replace the relay.

N19848
Fog Light Adjust Screw
BE0DW-01
BE-24
- BODY ELECTRICALFOG LIGHT SYSTEM
2002 Author
: Date
:
1997 SUPRA (RM502U)
ADJUSTMENT
ADJUST FOG LIGHT AIM
Adjust Screw: Vertical Direction