ECM

2001, 2002, 2003, 2004 HONDA CIVIC

• Engine cranks but won't start.

• The Check Engine lights up.

• The immobilizer indicator flashes while the engine is cranking.

• Your scanner cannot communicate with the ECM / PCM.

• If it starts, the transmission is in protected mode

Check for loose alternator bolts. If these bolts are loose for any reason, such as where the alternator or an A/C accessory or extra was installed, the alternator can overload and fry the ECM/PCM.

If the alternator bolts are loose, tighten them, and try to restart the engine. If the engine fails to start, check the ECM/PCM connector for battery voltage and ground. If you are reading battery voltage and ground at the connector, reseat the ECM/PCM. Please note, however, any ECM/PCM damage that is caused by loose alternator bolts or by the installation of an aftermarket accessory or body repair is not covered by the manufacturer's warranty.

Come with us, here at Advamex we can help you. Reference TSB HSN080401