Daihatsu F300 Service Manual page 1381

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EFISYSTEM
3. Prior to replacing the ECU, thoroughly perform the trouble shooting for possible items other than the ECU.
The ECU is a reliable, but an expensive part.
Even when the ECU has been replaced according to the check results of the trouble shooting and the
relevant malfunction has been remedied, be sure to reinstall the old ECU so as to confirm that the
malfunction was obviously caused by the faulty ECU.
4. For the trouble shooting, use a volt'ohmmeter whose
internal resistance is 10
kON
or more.
Use of a voiVohmmeter whose internal resistance is less
than 10
kn/V
may cause an ECU malfunction or wrong
diagnosis.
Furthermore, be sure to employ a meter whose resolution
is 0.1V
or
more,
0.50
or more and whose accuracy is
±2%
or more.
~
.
0'11...........--aJ
"'------
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h -
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WNSW30-EF034
5. In this trouble shooting, no consideration has been made to any displacement of timing belt teeth. Hence,
if the trouble persists even after the trouble shooting has been carried out, check to see if the timing belt
has skipped a tooth.
TROUBLE SHOOTING PROCEDURE
OJ
Symptom .... Engine will not start .
(Engine will not crank or cranks slowly.)
I
Check electric source.
OK
j
Check starting system
BAD
BAD
EF-13
1. Battery
(1) Connection
{2) Specific gravity of electrolyte
{Battery capacity)
2. Fusible links
and/Or fuses
1. Ignition switch
2.
Starter
3. Wiring/Connection