TSRM/MK2 Supra/Repair Manual
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BE/Body Electrical System — Headlight Cleaner, page 21

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p.022
Headlight Cleaner — MK2 Supra Body Electrical System, page 21
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Page text (OCR transcript)
HEADLIGHT CLEANER

Headlight Cleaner Control Relay

ON-VEHICLE INSPECTION OF HEADLIGHT CLEANER CONTROL RELAY

INSPECT RELAY OPERATION
(a) Check that there is continuity between terminal 2 and body ground with the washer switch "ON".
(b) Check that there is battery voltage between terminal 3 and body ground with the light control switch at "TAIL" or "HEAD".
(c) Check that there is continuity between terminal 5 and body ground for about 0.5 seconds when the light control switch is at "TAIL" or "HEAD" and the washer switch is pushed twice in succession.
If operation is not as specified, replace the relay.

Cleaner Motor

INSPECTION OF CLEANER MOTOR

INSPECT MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal 1. Connect the negative (—) lead to terminal 2.
(b) Check that the motor operates.
CAUTION: These tests must be performed quickly (within 3 — 5 seconds) to prevent the coil from burning out.
If operation is not as specified, replace the motor.