TSRM/MK3 Supra/Repair Manual
Repair ManualWiring DiagramsCommunity Fixes
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BE/Body Electrical System, page 81

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Body Electrical System — MK3 Supra Body Electrical System, page 81
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Page text (OCR transcript)
Main & Control Switch (U.S.A.)

INSPECTION OF MAIN & CONTROL SWITCH

INSPECT SWITCH OPERATION
(a) Push the main switch ON, and check that there is continuity between terminals 3 and 5.
(b) Push the main switch OFF, and check that there is no continuity between terminals 3 and 5.

If operation is not as specified, replace the switch.

INSPECT SWITCH RESISTANCE

Inspect the switch resistance value between terminals 3 and 4 at each switch position.

Switch position          Resistance value    (Ω)
RESUME/ACCEL                    68
SET/COAST                      198
CANCEL                         418

If resistance value is not as specified, replace the switch.

Main Switch (CANADA)

INSPECTION OF MAIN SWITCH

INSPECT SWITCH OPERATION
(a) Turn the main switch ON, and check that there is continuity between terminals 1 and 2.
(b) Turn the main switch OFF, and check that there is no continuity between terminals 1 and 2.

If operation is not as specified, replace the switch.

Control Switch (CANADA)

INSPECTION OF CONTROL SWITCH

INSPECT SWITCH RESISTANCE

Inspect the switch resistance value between terminals 1 and 4 at each switch position.

Switch position          Resistance value    (Ω)
RESUME/ACCEL                    68
SET/COAST                      198
CANCEL                         418

If resistance value is not as specified, replace the switch.

Main Relay

INSPECTION OF MAIN RELAY