Page text (OCR transcript)
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