TSRM/MK2 Supra/Repair Manual
Repair ManualWiring Diagrams
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BE/Body Electrical System22 / 121
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WIPERS AND WASHERS
Troubleshooting — MK2 Supra Body Electrical System, page 22
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WIPERS AND WASHERS Troubleshooting Problem | Possible cause | Remedy | Page Front | Rear Wipers do not operate or return to off position | WIPER fuse blown | Replace fuse and check for short | BE-4 | BE-4 | Wiper motor faulty | Check motor | BE-24 | BE-25 | Wiper switch faulty | Check switch | BE-22 | BE-25 | Wiring or ground faulty | Repair as necessary | | Wipers do not operate in INT position | Wiper relay faulty | Check relay | BE-23 | BE-25 | Wiper switch faulty | Check switch | BE-22 | BE-25 | Wiper motor faulty | Check motor | BE-24 | BE-25 | Wiring or ground faulty | Repair as necessary | | Washers do not operate | Washer hose or nozzle clogged | Repair as necessary | | | Washer motor faulty | Replace motor | | | Wiper switch faulty | Check switch | BE-22 | BE-25 | Wiring faulty | Repair as necessary | | Front Wiper and Washer Switch INSPECTION OF FRONT WIPER AND WASHER SWITCH INSPECT FRONT WIPER AND WASHER SWITCH CONTINUITY [DIAGRAM showing numbered terminals: 17 18 10 10 5 5 9 9 2 2 with positions 23 22 25 24 11 10 8 4 3 2] [DIAGRAM showing switch connector positions 24, 23, 27, 26, 25] Switch | Terminal | Switch | W 15 W (L) | 19 Ps (L G R) | 14 EM | 16 S (L G)(L R) | 20 S (L G R) | 26 (L G) | 21 (L B) | 17 18 (L W) | 22 25 (L O) | 27 YN (Y) OFF | | | | | | | | | Wiper | INT | | ○——○ | ○——○ | ○——○ | | | | | | LO | | | | | | | | ○——○ | | HI | | | | | | | | ○——○ | Washer | OFF | | | | | | | | | | ON | ○——○ | | | | | | | | With Firm | SLOW | | | | | 50 kΩ | | | ○——○ | Mist | ● | | | | | 34.75 kΩ | | | ○——○ | | ● | | | | | 19.75 kΩ | | | ○——○ | | FAST | | | | | 0 kΩ | | | ○——○ | BE0211 5E-27 If continuity is not as specified, replace the switch.