TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
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BE/Body Electrical Systems37 / 203
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Washer Linked Operation — MK4 Supra Body Electrical Systems, page 37
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BODY ELECTRICAL SYSTEM – WIPER AND WASHER SYSTEM BE–37 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 terminal B7 and the negative (–) lead to terminal B16. (c) Push in the washer switch, check that the voltage changes as shown in the table. Washer switch ON OFF Approx. 1 sec. Approx. 3 sec. Battery positive voltage 0 volt If operation is not as specified, replace the wiper and washer switch. 2. INSPECT REAR WIPER AND WASHER SWITCH CONTINUITY Switch position | Tester connection to terminal number | Specified condition Washer ON (Lower) | B2–B16 | Continuity Wiper OFF | – | Continuity Wiper INT | B10–B16 | Continuity Wiper ON | B1–B16 | Continuity Washer ON (Upper) | B1–B2 B2–B16 | Continuity If continuity is not as specified, replace the switch. Washer ON ON INT OFF Washer ON Connector ''A'' Connector ''B'' N0885B V-34-2 209287 BE0930