TSRM/MK2 Supra/Repair Manual
Repair ManualWiring Diagrams
p.094

BE/Body Electrical System, page 95

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p.096
Body Electrical System — MK2 Supra Body Electrical System, page 95
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Page text (OCR transcript)
E
INSPECTION OF LH KEY UNLOCK SWITCH CIRCUIT

Turn ignition switch off.

DIODE

INSPECT DIODE CONTINUITY
Is diode of key unlock switch normal?
(See page BE-67)

No → Replace diode.

Yes ↓

COMPUTER

INSPECT KEY UNLOCK SWITCH CIRCUIT
Is there continuity between terminal 9 and
body ground with LH door opened with key?

No → Open circuit in wire harness between
terminal 9 of computer and terminal
1 of LH key unlock switch side diode.

Yes ↓

Replace computer.

F
INSPECTION OF RH KEY UNLOCK SWITCH CIRCUIT

Turn ignition switch off.

DIODE

INSPECT DIODE CONTINUITY
Is diode of key unlock switch normal?
(See page BE-67)

No → Replace diode.

Yes ↓

COMPUTER

INSPECT KEY UNLOCK SWITCH CIRCUIT
Is there continuity between terminal 9 and
body ground with RH door opened with
key?

No → Open circuit in wire harness between
terminal 9 of computer and terminal
1 of RH key unlock switch side diode.

Yes ↓

Replace computer.