TSRM/MK3 Supra/Repair Manual
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FI/EFI System — Troubleshooting with VOLT/OHMMETER (7M-GE), page 30

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Troubleshooting with VOLT/OHMMETER (7M-GE) — MK3 Supra EFI System, page 30
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Page text (OCR transcript)
HINT: The following troubleshooting procedures are based on the assumption that a malfunction exists, therefore the procedure may vary somewhat. However, troubleshooting should be performed referring to the inspection methods described in this manual.

Before beginning inspection, it is best to first make a simple check of the fuses, fusible links and condition of the connectors.

The following troubleshooting procedures are based on the supposition that the trouble lies in either a short or open circuit in a component outside the computer, or in a component circuit.

If engine trouble occurs even though proper operation voltage of the selected computer connector, then it can be assumed the computer is faulty and should be replaced.

LOCATION OF FUSES AND FUSIBLE LINKS

No. 1 Junction Block
Fuse
GAUGE 7.5A
Fuse
IGN 7.5A

Fusible Link
AM1 40A
Fusible Link
ALT 120A
EFI Main Relay

Fusible Link
2.0L

No. 2
Junction Block

Fusible Link
AM2 30A
Fuse
EFI 15A

FI370/L