FI-66 EFI SYSTEM — Troubleshooting with Volt/Ohmmeter (7M-GTE) No. | Terminals | Trouble | Condition | STD Voltage 11 | W — E1 | No voltage | No. trouble ("CHECK ENGINE" warning light off) and engine running | 8 — 14 V ECU FUSE GAUGE 7.5A | "CHECK ENGINE" Warning Light Combination Meter W E1 F02728 ① There is no voltage between ECU terminals W and E1. (oding) ECU Voltmeter E1 W F02772 ② Check that there is voltage between ECU terminal W and body ground. NO | OK ③ Check wiring between ECU terminal E1 and body ground. OK | BAD Try another ECU. | Repair or replace. ECU Voltmeter W F02773 Check GAUGE fuse (7.5A) and "CHECK ENGINE" warning light. OK | BAD Repair or replace. Fuse blows again ECU Ohmmeter E1 F02766 Check wiring between ECU terminal W and fuse. | BAD | Repair or replace.