Civic Si L4-2.0L (2004)
Alternator: Technical Service Bulletins
Engine Won't Start - Check Alternator Bolts
SOURCE:
Honda Service News August 2004
TITLE:
Engine Won't Start? Check for Loose Alternator Bolts
APPLIES TO:
2001-04 Civic
SERVICE TIP:
Got a 2001-04 Civic in your shop with any or all of these symptoms?
- The engine cranks but it won't start.
- The MIL comes on.
- The immobilizer 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 R&R'ed 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 the engine still won't start, then check the ECM/PCM connector for battery
voltage and ground. If you're reading battery voltage and ground at the connector, then replace the ECM/PCM. Keep in mind, though, any ECM/PCM
damage that's caused by loose alternator bolts from A/C installation or body repair isn't covered by warranty.