TSRM/MK2 Supra/Repair Manual
Repair ManualWiring Diagrams
p.021

BE/Body Electrical System — Wipers and Washers Troubleshooting, page 22

22 / 121
p.023
Wipers and Washers Troubleshooting — MK2 Supra Body Electrical System, page 22
100%
Page text (OCR transcript)
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.