Daihatsu F300 Service Manual page 1403

EFISYSTEM
• TROUBLE SHOOTING EFI ELECTRONIC CIRCUIT WITH VOL T/OHMMERTER
•
•
•
NOTE:
The trouble shooting procedures described in this section are ones designed for the inspection for each
system. Hence, they may differ from actual trouble shooting procedure.
However, it is advisable
that
the basic approach to trouble shooting is based on the procedure described
in this manual.
Before you start
the
inspection,
tt
is a best practice to
first
make simple checks
of
the fuses, fusible links
and conditions of the connectors.
The following trouble shooting procedure has been prepared on the assumption that troubles are caused
by short circuits or open circuits of external components of the computer or short circuits inside the
computer.
If engine malfunctions persist even when the terminal voltages
of
the ECU connectors are normal, the
ECU may be faulty. Try the trouble shooting using a new ECU.
However, even when the trouble is solved after the ECU has been replaced, it is imperative to confirm
that
the
trouble was actually attributed to the old ECU by installing the old ECU again.
When you perform the inspection of wirings, see the section under "Harness & Wiring Diagram."
· - - \
EF-35