Page 185 of 1807
Z07379
Junction Block Side
- BODY ELECTRICALINTERIOR LIGHT SYSTEM
BE-29
2007 Author: Date:
1997 SUPRA (RM502U)
6. INSPECT INTEGRATION RELAY CIRCUIT
Remove the relay from junction block and inspect the connector
on the junction block side, as shown in the chart.
Tester connectionConditionSpecified condition
4 - GroundCourtesy Switch Position OFF (Door closed)No continuity
4 - GroundCourtesy Switch Position ON (Door opened)Continuity
10 - GroundConstantContinuity
1 - GroundConstantBattery positive voltage
7 - GroundIgnition switch position / LOCK or ACCNo voltage
7 - GroundIgnition switch position / ONBattery positive voltage
If circuit is as specified, try replacing the relay with a new one.
If the circuit is not as specified, inspect the circuits connected
to other parts.
7. INSPECT DOOR KEY LOCK AND UNLOCK SWITCH
CIRCUIT
See page DI-656
8. INSPECT DOOR UNLOCK DETECTION SWITCH CIR-
CUIT
See page DI-638
Page 186 of 1807
Z18227
Park / Neutral Position Switch
Back-up Light Switch
Rear Combination Lights
Back-up Lights GAUGE Fuse J/B No.1
BE0E1-01
BE-30
- BODY ELECTRICALBACK-UP LIGHT SYSTEM
2008 Author: Date:
1997 SUPRA (RM502U)
BACK-UP LIGHT SYSTEM
LOCATION
Page 187 of 1807
BE0E2-02
Z09343
2JZ-GE
2JZ-GTE
- BODY ELECTRICALBACK-UP LIGHT SYSTEM
BE-31
2009 Author: Date:
1997 SUPRA (RM502U)
INSPECTION
1. INSPECT BACK-UP LIGHT SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
Free1 - 2No continuity
Push1 - 2Continuity
If continuity is not as specified, replace the switch.
2. INSPECT PARK/NEUTRAL POSITION SWITCH MAL-
FUNCTION
2JZ-GE: See page DI-354
2JZ-GTE: See page DI-423
Page 188 of 1807
Z18228
Stop Light SwitchHigh Mounted Stop Light
Rear Combination Lights J/B No.1
STOP Fuse
Stop Lights
BE0E3-01
BE-32
- BODY ELECTRICALSTOP LIGHT SYSTEM
2010 Author: Date:
1997 SUPRA (RM502U)
STOP LIGHT SYSTEM
LOCATION
Page 189 of 1807
BE0E4-01
N09044
21
43
- BODY ELECTRICALSTOP LIGHT SYSTEM
BE-33
2011 Author: Date:
1997 SUPRA (RM502U)
INSPECTION
INSPECT STOP LIGHT SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
Switch pin free
(Pedal depressed)1 - 2Continuity
Switch pin pushed in
(Pedal released)3 - 4Continuity
If continuity is not as specified, replace the switch.
Page 190 of 1807
Z18229
Front Wiper MotorCombination Switch
Wiper and Washer Switch
Washer Motor
Rear Wiper Motor and RelayWIPER Fuse J/B No.1
BE0E5-01
BE-34
- BODY ELECTRICALWIPER AND WASHER SYSTEM
2012 Author: Date:
1997 SUPRA (RM502U)
WIPER AND WASHER SYSTEM
LOCATION
Page 191 of 1807

Z09225
Washer ON
OFF
INT
LO
HI MISTSLOW (INT)
FAST (INT)
Connector ºBº Connector ºAº
BE0E6-02
N15568
B7
B18B16
N15569
B7
B16
B18B4
INT time control
switch positionVoltage
Approx. 1 - 3 sec.
Battery positive voltage
0 V
Battery positive voltage
0 V Approx. 10 - 15 sec. FAST
SLOW
- BODY ELECTRICALWIPER AND WASHER SYSTEM
BE-35
2013 Author: Date:
1997 SUPRA (RM502U)
INSPECTION
1. INSPECT FRONT WIPER AND WASHER SWITCH
CONTINUITY
Switch positionTester connectionSpecified condition
Wiper OFFB4 - B7Continuity
Wiper OFF and MISTB7 - B18Continuity
Wiper INTB4 - B7Continuity
Wiper INT and MISTB7 - B18Continuity
Wiper LOB7 - B18Continuity
Wiper LO and MISTB7 - B18Continuity
Wiper HIB13 - B18Continuity
Wiper HI and MISTB7 - B13
B13 - B18Continuity
Wiper ONB8 - B16Continuity
If continuity is not as specified, replace the switch.
2. INSPECT FRONT WIPER INTERMITTENT OPERA-
TION
(a) Turn the wiper switch to INT position.
(b) Turn the intermittent time control switch to FAST position.
(c) Connect the positive (+) lead from the battery to terminal
B18 and the negative (-) lead to terminal B16.
(d) Connect the positive (+) lead from the voltmeter to termi-
nal B7 and the negative (-) lead to terminal B16, check
that the meter needle indicates battery positive voltage.
(e) After connecting terminal B4 to terminal B18, connect to
terminal it to terminal B16, check the voltage rises from 0
V to battery voltage with in the times, as shown in the
table.
If operation is not as specified, replace the wiper and washer
switch.
Page 192 of 1807
N15568
B16
B18 B7
Washer Switch ON
Battery positive voltageLess than 1 sec. OFF
0 V
Approx. 3 sec.
Z09287
OFF INT
Washer ON Washer ON
ON
Connector ºBº Connector ºAº BE-36
- BODY ELECTRICALWIPER AND WASHER SYSTEM
2014 Author: Date:
1997 SUPRA (RM502U)
3. INSPECT FRONT WASHER LINKED OPERATION
(a) Connect the positive (+) lead from the battery to terminal
B18 and the negative (-) lead to terminal B16.
(b) Connect the positive (+) lead from the voltmeter to termi-
nal B7 and the negative (-) lead to terminal B16.
(c) Push in the washer switch, check that the voltage
changes, as shown in the table.
If operation is not as specified, replace the wiper and washer
switch.
4. INSPECT REAR WIPER AND WASHER SWITCH CON-
TINUITY
Switch positionTester connectionSpecified condition
Washer 1B2 - B16Continuity
OFF-No continuity
INTB10 - B16Continuity
ONB1 - B16Continuity
Washer 2B1 - B2 - B16Continuity
If continuity is not as specified, replace the switch.