When attempting to diagnose instrument cluster unit (ICU)malfunctions what should you do first?
A) replace the module
B) use a testlight to locate the problem
C) use a DMM to locate the problem
D) access the data bus for DTCs

Question

Quizplus · Accepted Answer

Accessing the data bus for Diagnostic Trouble Codes (DTCs) is the first step in diagnosing instrument cluster unit malfunctions. This approach allows for an initial assessment of any reported issues through the vehicle's onboard diagnostic system before proceeding with more invasive or direct testing methods.

When Attempting to Diagnose Instrument Cluster Unit (ICU)malfunctions What Should