Honda EP3 Service Manual page 333

PGM-FISystem
MIL Gircuit Troubleshooting (cont'd)
81. Check for continuity between ECM connector
t e r m i n a l E 2 9 a n d b o d y g r o u n d .
ECM CONNECTOR E 131P}
r l 2 l 3
4
5
8 I
1 4
t c
61,/118 2A 21
22123124
271./
3031
o
scs(BRN)
Wire side of female terminals
ls there continuity?
YES-Repair short in the wire between the data link
connector (DLC) and the ECM (E29).1
NO Update the ECM if it does not have the latest
software, or substitute a known-good ECM, then
recheck (see page 11-6). lf the symptom/indication
goes away with a known-good ECM, replace the
o r i g i n a l E C I \ 4 , I
Turn the ignition switch OFF.
Disconnect ECM connector E (31P).
T u r n t h e i g n i t i o n s w i t c h O N ( l l ) .
Does the MIL stay on?
YES-Repair short in the wire between the gauge
a s s e m b l y a n d t h e E C M ( E 3 1 ) . l f t h e w i r e i s O K ,
r e p l a c e t h e g a u g e a s s e m b l y . l
NO Update the ECM if it does not have the latest
software, or substitute a known-good ECM, then
recheck (see page 1 1-6). lf the symptom/indication
goes away with a known-good ECM, replace the
o r i g i n a l E C M . I
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