TSRM/MK3 Supra/Repair Manual
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BE/Body Electrical System — Parts Inspection, page 22

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p.023
Parts Inspection — MK3 Supra Body Electrical System, page 22
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Page text (OCR transcript)
BE-22

BODY ELECTRICAL SYSTEM — Lighting System

Reference:

RIGHT TURN

FLASH
LO
HI

LEFT TURN

[CONNECTOR DIAGRAM]

BE2100
V.10-2

Parts Inspection
Headlight and Taillight System

1. INSPECT COMBINATION SWITCH
(Light Control Switch/Continuity)

Terminal (Wire color) | 20/9 | 2/14 | 11/14 | 13/14
Switch position | (G) | (Clear) | (W) | (R)
OFF | | | |
UP | O—|—|—O
TAIL | O—|—O—|—|
HEAD | |—O—O—|—O

(Headlight Dimmer and Turn Signal Switch/Continuity)
Headlight Dimmer Switch

Terminal (Color) | 3/14 | 9/14 | 12/14 | 14/14
Switch position | (R-G) | (W-B) | (R-Y) | (R-W)
Flash | |—O—|—O—|—O
Low beam | O—|—O—|—|
High beam | |—O—|—O—|

Turn Signal Switch

Terminal (Color) | 1/14 | 5/14 | 8/14
Switch position | (G-W) | (G-B) | (G-Y)
Left turn | O—|—O—|
Neutral | | | |
Right turn | O—|—|—O

If continuity is not as specified, replace the switch.

2. INSPECT RELAY
(Headlight Control Relay/Continuity)

[RELAY DIAGRAM with numbered terminals 1-4]

Terminal | 1 | 2 | 3 | 4
Condition
Constant | O—/∩∩∩
Apply battery voltage to
terminals 1 and 2. | | | O—|—O

(Taillight Control Relay/Continuity)

[RELAY DIAGRAMS with numbered terminals 1-4]
BE1647 BE1576 BE1641

Terminal | 1 | 2 | 3 | 4
Condition
Constant | O—|—/∩∩∩—|—O
Apply battery voltage to
terminals 1 and 3. | | O—|—|—O