Malfunction In Ecm Internal Circuit - Honda Civic 2002-2003 Service Manual

PGM-FI System
DTC Troubleshooting (cont'd)
10. Measure voltage between ECM connectorterminal
A26 and body ground.
ECM CONNECTOR A 131P)
Wire side of female terminals
Is there about 5 V?
YES-Repair open in the wire between the ECM
(A26) and CMP sensor B (TDC sensor) .•
NO-Gotostep 11.
11. Turn the ignition switch OFF.
12. Disconnect ECM connector A (31P).
13. Check for continuity between ECM connector
terminal A26 and body ground.
ECM CONNECTOR A (31PI
=
Wire side of female terminals
Is there continuity?
YES-Repair short in the wire between the ECM
(A26) and the CMP sensor B (TDC sensor) .•
NO-Update the ECM if it does not have the latest
software, or substitute a known-good ECM, then
recheck (see page 11-6). If the symptom/indication
goes away with a known-good ECM, replace the
original ECM .•
11-96
OTe P1607:
Malfunction in ECM Internal
Circuit
1. Resetthe ECM (see page 11-4).
2. Turn the ignition switch ON (II), and wait for
40 seconds.
Is OTe PI6D7 indicated?
YES-Update the ECM if it does not have the latest
software, or substitute a known-good ECM, then
recheck (see page 11-6). If the symptom/indication
goes away with a known-good ECM, replace the
original ECM .•
NO-Intermittent failure, system is OK at this time.
A low battery can cause this problem. Ask the
customer
if
there has been any recent trouble
starting the engine .•
,
•
•