Check that there is voltage between ECM terminal VF and body
ground.
(1) There is no voltage between ECM terminals VF and E1.
Check wiring between ECM terminal E1 and body ground.
OK
CONTINUED ON PAGE EG1–139
Is air leaking into air induction system?
Check distributor and ignition system.
(California Vehicles
only)
Try another ECM.
Check spark plugs.
Repair or replace.
Repair or replace.
Repair or replace.
Repair air leak.
BAD
BAD
YES
BAD
–ENGINE MFI SYSTEM
EG1–138