Honda Civic 2001–2005 — technical service bulletin
Bulletin A15120F · NHTSA communication 10099948 · issued Dec 4, 2015
Technical service bulletin
communication type
Engine
component
2001–2005
model years
5
vehicle entries
Official summary
"service news article - troubleshooting a vehicle for any or all of these symptoms? The engine cranks, but won t start. The mil comes on. The immobilizer system indicator blinks while the engine cranks. The hds can t communicate with the ecm/pcm. Check for loose alternator bolts. If these bolts are loose for any reason, such as the alternator was serviced or an accessory a/c was installed on a dx model at the dealership, the alternator can overcharge and fry the ecm/pcm. If the alternator bolts are loose, tighten them and try restarting the engine. If it still won t start, then check the ecm/p
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.