EFI SYSTEM — Troubleshooting with Volt/Ohmmeter (7M-GTE) FI-57 No. | Terminals | Trouble | Condition | STD Voltage 3 | KS — Body ground | No voltage | Ignition SW ON Cranking or running | 4 - 6 V 2 - 4 V | VC — Body ground | | Ignition SW ON | 4 - 6 V ECU +B (+B1) VC KS E1 Air Flow Meter VC KS E1 FI2590 • KS — Body ground ECU ① There is no voltage between ECU terminals KS and body ground. (IG SW ON) Voltmeter KS FI2725 OK NO Refer to No. 1. (See page FI-54) ECU ② +B Voltmeter E1 ② Check that there is voltage between ECU terminal +B (+B1) and body ground. (IG SW ON) ③ Check wiring between ECU terminal E1 and body ground. OK | BAD Check wiring between ECU and air flow meter. | Repair or replace. FI2757 OK | BAD Try another ECU. | Repair or replace. ECU ③ Ohmmeter E1 FI2758