Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-710B

Condition
The engine control module (ECM) contains a code for the immobilizer which is unique to each car. Before the engine can be started, the immobilizer code is checked to ensure that it corresponds to both the central electronic module (CEM) and the engine control module (ECM).
The diagnostic trouble code (DTC) will be stored if there is no communication between the central electronic module (CEM) and the engine control module (ECM) so that the immobilizer code cannot be checked.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.

Substitute value
None.

Possible source
- Open-circuit in the communication between the central electronic module (CEM) and the engine control module (ECM)
- The central electronic module (CEM) is not programmed and has no code for the immobilizer
- Damaged central electronic module (CEM).

Fault symptom[s]
- The starter motor turns but the engine does not start.