After replacing a faulty ignition coil, the vehicle still has starting issues. What should be the next step?

Choosing to examine the wiring harness after replacing a faulty ignition coil is a logical next step because the wiring is crucial for proper communication between various engine components, including the ignition system. If the wiring harness has frayed wires, loose connections, or corrosion, it can disrupt power delivery or signals that are essential for the ignition coil to function correctly and start the vehicle.

Starting issues can sometimes arise not just from the ignition coil alone but rather from associated wiring problems that prevent the coil from receiving the proper signals or power. Thoroughly checking the wiring harness can identify any defects that may be contributing to the persistent starting issues, allowing for a more comprehensive diagnosis.

While checking the fuel injectors, inspecting battery condition, or clearing Diagnostic Trouble Codes (DTCs) are all important steps in troubleshooting, they wouldn't be the immediate next logical step following the coil replacement. If the ignition system still isn’t functioning correctly due to wiring issues, all other components become secondary until that underlying problem is resolved.