Page 209 of 1807
Z18234
Tension Reducer Solenoid
Seat Belt Buckle Switch J/B No.1
ECU-IG Fuse
BE0EA-01
- BODY ELECTRICALELECTRIC TENSION REDUCER SYSTEM
BE-53
2031 Author: Date:
1997 SUPRA (RM502U)
ELECTRIC TENSION REDUCER SYSTEM
LOCATION
Page 210 of 1807
BE0EB-01
N08955
25°
2
Returns Slowly1
N08956
25°
Returns Quickly BE-54
- BODY ELECTRICALELECTRIC TENSION REDUCER SYSTEM
2032 Author: Date:
1997 SUPRA (RM502U)
INSPECTION
1. INSPECT TENSION REDUCER SOLENOID OPERA-
TION
(a) Connect the positive (+) lead from the battery to terminal
1, and negative (-) lead to terminal 2.
(b) Pull the belt upward and check that the belt is slowly re-
tracted when released.
(c) Disconnect the lead from the battery.
(d) Pull the belt upward and check that the belt is retracted
more quickly when released than in (b).
HINT:
Do not tilt the retractor.
If the operation is not as specified, replace the front seat outer
belt assembly.
2. INSPECT BUCKLE SWITCH CONTINUITY
See page BE-43
Page 211 of 1807
Z18235
Outer Rear View Mirror LH
Mirror DefoggerA/C Control Panel Assembly
Defogger Switch
Outer Rear View Mirror RH
Mirror Defogger
Rear Window Defogger Defogger Relay R/B No.4
MIR-HTR Fuse DEFOG Fuse GAUGE Fuse J/B No.1
BE0EC-01
- BODY ELECTRICALDEFOGGER SYSTEM
BE-55
2033 Author: Date:
1997 SUPRA (RM502U)
DEFOGGER SYSTEM
LOCATION
Page 212 of 1807

BE0ED-01
N08876
Connector B Connector A
10
7
N08877ON
Z05932
BE4029
Tester Probe
Heat Wire
TIn Foil BE-56
- BODY ELECTRICALDEFOGGER SYSTEM
2034 Author: Date:
1997 SUPRA (RM502U)
INSPECTION
1. INSPECT DEFOGGER SWITCH OPERATION
(a) Connect the positive (+) lead from the voltmeter to termi-
nal 7 of connector B and the negative (-) lead from volt-
meter to terminal 10 of connector B.
(b) When the switch is off, the voltage should be approx. 12
V.
(c) When the switch is on, check that the indicator light lights
up and that the voltage is less than 1 V.
(d) After 15 minutes, check that the switch is off and the volt-
age is approx. 12 V.
2. INSPECT A/C AMPLIFIER
See page DI-71 1
3. INSPECT DEFOGGER 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.
4. INSPECT DEFOGGER WIRE
NOTICE:
When cleaning the glass, use a soft, dry cloth, and
wipe the glass in the direction of the wire. Take care
not to damage the wires.
Do not use detergents or glass cleaners with abrasive
ingredients.
When measuring voltage, wind a piece of tin foil
around the top of the negative probe and press the foil
against the wire with your finger, as shown.
Page 213 of 1807

BE0123
At Center
BE0124
0 VoltSeveral
Volts
Broken
Wire
BE0150
Repair Point
Masking TapeBroken
Wire
- BODY ELECTRICALDEFOGGER SYSTEM
BE-57
2035 Author: Date:
1997 SUPRA (RM502U)
(a) Turn the ignition switch ON.
(b) Turn the defogger switch ON.
(c) Inspect the voltage at the center of each heat wire, as
shown.
VoltageCriteria
Approx. 5VOkay (No break in wire)
Approx. 10V or 0VBroken wire
HINT:
If there is approximately 10 V, the wire is broken between the
center of the wire and the positive (+) end. If there is no voltage,
the wire is broken between the center of the wire and ground.
(d) Place the voltmeter positive (+) lead against the defogger
positive (+) terminal.
(e) Place the voltmeter negative (-) lead with the foil strip
against the heat wire at the positive (+) terminal end and
slide it toward the negative (-) terminal end.
(f) The point where the voltmeter deflects from zero to sever-
al V is the place where the heat wire is broken.
HINT:
If the heat wire is not broken, the voltmeter indicates 0 V at the
positive (+) end of the heat wire but gradually increases to about
12 V as the meter probe is moved to the other end.
5. IF NECESSARY, REPAIR DEFOGGER WIRE
(a) Clean the broken wire tips with a grease, wax and silicone
remover.
(b) Place the masking tape along both sides of the wire to be
repaired.
(c) Thoroughly mix the repair agent (DuPont paste No.
4817).
Page 214 of 1807

BE0151
N08878
Z13354
Wire Harness Side BE-58
- BODY ELECTRICALDEFOGGER SYSTEM
2036 Author: Date:
1997 SUPRA (RM502U)
(d) Using a fine tip brush, apply a small amount to the wire.
(e) After a few minutes, remove the masking tape.
(f) Do not repair the defogger wire for at least 24 hours.
6. INSPECT MIRROR DEFOGGER OPERATION
(a) Connect the positive (+) lead from the battery to terminal
2 and the negative (-) lead to terminal 1.
(b) Check that the mirror becomes warm.
HINT:
It will take a short time for the mirror to become warm.
If the mirror does not become warm, replace the mirror assem-
bly.
7. INSPECT MIRROR DEFOGGER CIRCUIT
Disconnect the connector from the outside mirror and inspect
the connector on the wire harness side, as shown.
Tester connectionConditionSpecified condition
1 - GroundConstantContinuity
2 - GroundIgnition switch ON (Defogger switch OFF)No voltage
2 - GroundIgnition switch ON (Defogger switch ON)Battery positive voltage
If the circuit is not as specified, inspect the circuits connected
to other parts.
Page 215 of 1807
Z18236
Power Window Switch
Power Window Motor POWER Fuse
Power Main Relay
Power Window Master Switch GAUGE Fuse DOOR FuseR/B No.2
J/B No.1
Power Window Motor
BE0EE-01
- BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
BE-59
2037 Author: Date:
1997 SUPRA (RM502U)
POWER WINDOW CONTROL SYSTEM
LOCATION
Page 216 of 1807
Z09149
BE0EF-01
N08854
BE-60
- BODY ELECTRICALPOWER WINDOW CONTROL SYSTEM
2038 Author: Date:
1997 SUPRA (RM502U)
INSPECTION
1. INSPECT POWER WINDOW MASTER SWITCH CON-
TINUITY
Driver 's Switch:
Switch positionTester connectionSpecified condition
UP4 - 10, 8 - 9Continuity
OFF8 - 10, 8 - 9Continuity
DOWN4 - 9, 8 - 10Continuity
Passenger 's Switch (Window unlock):
Switch positionTester connectionSpecified condition
UP4 - 5, 7 - 8Continuity
OFF5 - 8, 7 - 8Continuity
DOWN4 - 7, 5 - 8Continuity
Passenger 's Switch (Window lock):
Switch positionTester connectionSpecified condition
UP4 - 5Continuity
OFF5 - 7Continuity
DOWN4 - 7Continuity
If continuity is not as specified, replace the switch.
2. INSPECT POWER WINDOW MASTER SWITCH ILLU-
MINATION
Connect the positive (+) lead from the battery to terminal 4 and
the negative (-) lead to terminal 8, check that the illumination
lights up.
If operation is not as specified, replace the master switch.