TSRM/MK3 Supra/Repair Manual
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BE/Body Electrical System — Inspection of cancel switch circuit., page 72

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Inspection of cancel switch circuit. — MK3 Supra Body Electrical System, page 72
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Page text (OCR transcript)
BE-72
BODY ELECTRICAL SYSTEM — Cruise Control System

F
Inspection of cancel switch circuit.

Turn ignition switch off.

CONTROL SWITCH

INSPECT GROUND CONNECTION
Disconnect connector from control switch
and check continuity between terminal *3 or **4
of wire harness side connector and body
ground?

No
• Open circuit in wire harness between
terminal *3 or **4 and body ground.
• Body ground faulty.

Yes

INSPECT CANCEL SWITCH OPERATION
Is cancel switch operation normal?
(See page BE-81)

No
Replace control switch.

Yes

Connect connector to control switch.

COMPUTER

Disconnect connector from computer and
inspect connector on wire harness side as
follows.

INSPECT CANCEL SWITCH CIRCUIT
Is resistance value about 418Ω between
terminal 17 and body ground with cancel
switch pushed on?

No
Open or short circuit in wire harness
between terminal 17 of computer and
terminal *4 or **1 of control switch.

Yes

Replace computer.

*: U.S.A. (w/ Airbag system)
**: CANADA (w/o Airbag system)