Checking communication with engine control module (ECM) MSA 15.7 and Fenix 5.2

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Ignition Switch ON Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition on.
This can be done by reading the engine coolant temperature (ECT) for example.

Fig 2: Identifying VCT2000
Courtesy of VOLVO CARS OF NORTH AMERICA.

Does communication with the engine control module (ECM) function?

YES
Refer to Replacing immobilizer control module
NO
Refer to Replacing engine control module (ECM)