TSRM/MK2 Supra/Repair Manual
Repair ManualWiring Diagrams
p.078

BE/Body Electrical System, page 79

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p.080
Body Electrical System — MK2 Supra Body Electrical System, page 79
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Page text (OCR transcript)
E    INSPECTION OF PARKING BRAKE SWITCH

Turn ignition switch on.

COMPUTER

INSPECT PARKING BRAKE SWITCH CIRCUIT
Disconnect connector from computer.
Is there battery voltage between terminal 12 of
wire harness side connector and body ground ?

No → • Open circuit in wire harness between
       terminal 12 of computer and terminal 1
       parking brake switch.
     • Inspect parking brake switch.

Yes
↓
Replace computer.


F    INSPECTION OF CLUTCH SWITCH CIRCUIT

Turn ignition switch on.

CLUTCH S/W

INSPECT GROUND CONNECTION
Is there continuity between terminal 3 and
body ground ?

No → Open circuit in wire harness between
      terminal 3 and body ground.

Yes
↓
COMPUTER

INSPECT CLUTCH SWITCH CIRCUIT
Disconnect connector from computer.
Is there continuity between terminal 11 of wire
harness side connector and body ground with
clutch pedal depressed ?

No → • Open circuit in wire harness between
       terminal 11 of computer and terminal 2
       of clutch switch.
     • Inspect clutch switch.

Yes
↓
Replace computer.