TSRM/MK3 Supra/Repair Manual
Repair ManualWiring DiagramsCommunity Fixes
p.078

BE/Body Electrical System — Inspection of ECT solenoid circuit., page 79

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Inspection of ECT solenoid circuit. — MK3 Supra Body Electrical System, page 79
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Page text (OCR transcript)
L    Inspection of ECT solenoid circuit.

Turn ignition switch off.

COMPUTER

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

INSPECT ECT SOLENOID CIRCUIT
Is there continuity between terminal 8 of wire
harness side connector and terminal 11 of ECT
computer?

No    Open circuit in wire harness between
      terminal 8 of computer and terminal 11
      of ECT computer.

Yes

Is resistance value about 11 — 15 ohm
between terminal 8 of wire harness side con-
nector and body ground?

No    Open or short circuit in wire harness
      between terminal 8 of computer and
      terminal 11 of ECT computer or ECT
      solenoid (No. 2).

Yes

INSPECT OVERDRIVE CIRCUIT
Is there continuity between terminal 6 of wire
harness side connector and terminal 17 of ECT
computer?

No    Open circuit in wire harness between
      terminal 6 of computer and terminal 17
      of ECT computer.

Yes

Replace computer.