FI-38 EFI SYSTEM — Troubleshooting with Volt/Ohmmeter (7M-GE) No. | Terminals | Trouble | Condition | STD Voltage --- | --------- | ------- | --------- | ----------- | VC - E2 | | Ignition | — | VS - E2 | | SW ON | 3.7 ~ 4.3 V 3 | VS - E2 | No voltage | — | Measuring plate fully closed | 0.2 ~ 0.5 V | VS - E2 | | Idling | — | VS - E2 | | 3,000 rpm | 2.3 ~ 2.8 V | | | | 1.0 ~ 2.0 V [DIAGRAM showing ECU connections with Air Flow Meter, terminals E2, VS, VC, and connection to +B (B81) and E1] FI1263 [FLOWCHART showing troubleshooting steps:] 1. There is no voltage between ECU terminals VC or VS and E2. (IG SW ON) 2. Check that there is voltage between ECU terminal +B (B81) and body ground. (IG SW ON) OK | NO | Refer to No. 1. | (See page FI-35) Check wiring between ECU terminal E1 and body ground. OK | BAD | Repair or replace. 3. Check air flow meter. (See page FI-94) BAD | OK Replace air flow | Check wiring between ECU and meter. | air flow meter. | OK | BAD | Try another ECU. | Repair or replace. [DIAGRAM 1 showing ECU with Voltmeter connection to VS, VC, E2] FI1244 [DIAGRAM 2 showing ECU with Voltmeter connection to +B1 and ground] FI0513 [DIAGRAM 3 showing Air Flow Meter with Ohmmeter connection to VC, E2, VS] FI1283