7/24/2019
Immobilizer System Check • 2001 Honda Civic • MotoLogic
https://www.motologic.com/car/0b2d2810-3db7-012c-0340-19005f6e69db/article/d320f300-65fd-012d-267c-0016cba82182?returnPath=%2Fcar%2F0…
2/2
B-1
Immobilizer
system is not
normal
The ECM/PCM was not registered. Try to register the ECM/PCM by
using ''REPLACE ECM/PCM''.
The communication was not good between the ECM/PCM and the
immobilizer unit by battery voltage low.
The communication was not good between the immobilizer unit and the
ECM/PCM by influence of some noise.
B-2
Immobilizer
system is not
normal
The ECM/PCM was not registered. Try to register the ECM/PCM by
using ''REPLACE ECM/PCM''.
The communication was not good between the ECM/PCM and the
immobilizer unit by battery voltage low.
The communication was not good between the immobilizer unit and the
ECM/PCM by influence of some noise.
D-1
Immobilizer
system is not
normal
Harness short from the ECM/PCM to the immobilizer unit. (S-net line
short)
The communication was not good between the ECM/PCM and the
immobilizer unit by battery voltage low.
The communication was not good between the immobilizer unit and the
ECM/PCM by influence of some noise.
Immobilizer unit failure
ECM/PCM failure
D-3
Immobilizer
system is not
normal
Blown fuse
Harness open from the ECM/PCM to the immobilizer unit.
The communication was not good between the ECM/PCM and the
immobilizer unit by battery voltage low.
The communication was not good between the immobilizer unit and the
ECM/PCM by influence of some noise.
Immobilizer unit failure
ECM/PCM failuer
