Diagnosing a DBC-7 system is being discussed. Technician A says that the system must be depressurized before retrieving DTCs. Technician B says that thoroughly inspecting the vehicle and speed sensor harness is one of the first steps in proper diagnosis. Who is correct?

Question

Quizplus · Accepted Answer

Technician B is correct because inspecting the vehicle and speed sensor harness is a standard diagnostic procedure for issues related to the DBC-7 system, ensuring that physical damage or disconnections are not causing the problem. Technician A's statement about needing to depressurize the system before retrieving Diagnostic Trouble Codes (DTCs) is incorrect, as DTCs can typically be retrieved via a scan tool without the need to depressurize the system.

Diagnosing a DBC-7 System Is Being Discussed