TSRM/MK2 Supra/Repair Manual
Repair ManualWiring Diagrams
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AT/Automatic Transmission, page 14

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Automatic Transmission — MK2 Supra Automatic Transmission, page 14
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Page text (OCR transcript)
Continued from page AT-13

Connect ECT ECU connector and
while driving does DG terminal voltage
rise from 0V to 7V in sequence?

0V

0 → 7V
• Transmission faulty
• Solenoid faulty

0 → 5V
Proceed to trouble 4 (AT-16)

0 → 3V
There is 12V between ECT ECU
terminals 2 — GND when D range.

Yes | No

There is 12V between ECT ECU terminals
L — GND when D range.

No | Yes

• Neutral start switch circuit
  faulty
• Neutral start switch faulty

Try another ECT ECU