Page text (OCR transcript)
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
