What should you do first if the symptom the customer reports does not appear to be present?
A) Check to see whether the PCM has stored any DTCs in memory
B) Perform a voltage drop test
C) Use a choke tester to heat and/or cool the suspect module
D) Use a DSO and a low-current amp probe to sample the current waveform

Question

Quizplus · Accepted Answer

Checking for Diagnostic Trouble Codes (DTCs) stored in the Powertrain Control Module (PCM) is the first step in diagnosing an issue that is not immediately apparent. This can provide valuable information about any problems the vehicle has detected, even if the symptoms are not currently showing.

What Should You Do First If the Symptom the Customer