Civic Si L4-2.0L (2004)
12. Check for continuity between body ground and ECM connector terminal B13.
Is there continuity?
YES - Test the alternator.
NO - Repair open in the wire between the ECM (B13) and the alternator.
13. Turn the ignition switch OFF.
14. Disconnect ECM connector B (24P).
15. Check for continuity between body ground and ECM connector terminal B13.
Is there continuity?
YES - Repair short in the wire between the ECM (B13) and the alternator.
NO - Update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck. If the symptom/indication goes away
with a known-good ECM, replace the original ECM.
