Page text (OCR transcript)
FI-54
EFI SYSTEM — Troubleshooting with Volt/Ohmmeter (7M-GTE)
● +B (+B1) — E1
[Diagram 1 showing ECU and Voltmeter connection]
ECU
Voltmeter
E1
+B1
B
FI2911
[Diagram 2 showing ECU and Voltmeter connection]
ECU
Voltmeter
E1
+B1
B
FI2757
① There is no voltage between ECU terminals +B (+B1) and E1.
(IG SW ON)
② Check that there is voltage between ECU terminal +B (+B1) and
body ground. (IG SW ON)
NO
OK
Check wiring between ECU terminal E1 and body
ground.
OK
BAD
Try another ECU.
Repair or replace.
BAD
Check fuse, fusible links and wiring
harness.
Repair or replace.
OK
Check EFI main relay.
(See page FI-109)
BAD
Replace.
OK
Refer to M-REL — E1 trouble
section.
