Honda Civic 2002-2003 Service Manual page 315

PGM-FI System
MIL Circuit Troubleshooting (cont'd)
81. Check for continuity between ECM connector
terminal E29 and body ground.
ECM CONNECTOR E 131 PI
Wire side of female terminals
Is there continuity?
YES-Repair short in the wire between the data link
connector (DLCI and the ECM (E291 .•
NO-Update the ECM if it does not have the latest
software, or substitute a known-good ECM, then
recheck (see page 11-61. If the symptom/indication
goes away with a known-good ECM, replace the
original ECM .•
82. Turn the ignition switch OFF.
83. Disconnect ECM connector E (31PI.
84. Turn the ignition switch ON (III.
Does the MIL stay on?
YES-Repair short in the wire between the gauge
assembly and the ECM (E311. If the wire is OK,
replace the gauge assembly .•
NO-Update the ECM if it does not have the latest
software, or substitute a known-good ECM, then
recheck (see page 11-61. If the symptom/indication
goes away with a known-good ECM, replace the
original ECM .•
11-108
•