Editing Openai/68f2425a-4f40-8002-b582-df49f3c00605 (section)

== research ==
=== User: For a 1999 Jeep Grand Cherokee Laredo 4.0 V6 that keeps throwing a Code P0352 even after replacing the coil pack, spark… ===
For a 1999 Jeep Grand Cherokee Laredo 4.0 V6 that keeps throwing a Code P0352 even after replacing the coil pack, spark plugs and fuel injectors, what is the correct troubleshooting order when suspected that the wiring harness is the culprit?  Specifically, the harness connector that connects the main engine harness to the actual coil pack, around the back of the engine near the passenger side of the firewall?

=== Assistant: To help you best, could you confirm a few details: ===
To help you best, could you confirm a few details:
# Are you experiencing any specific driveability issues (misfires, rough idle, stalling, etc.)?
# Have you already visually inspected the harness connector near the firewall for damage or corrosion?
# Are you looking for a step-by-step electrical diagnostic guide including pinout tests, continuity checks, and ECM signal verification?
# Do you have access to a multimeter or oscilloscope for testing?

Once I have this, I can give you the most accurate troubleshooting procedure.

=== User: 1. ===
# Rough running
# No - I need exact precise and step by step iterative instruction
# Yes
# I have an endoscopic camera and a multimeter

=== Assistant: Thanks for confirming. ===
Thanks for confirming. I’ll gather a detailed, step-by-step troubleshooting procedure specifically for diagnosing a persistent P0352 code on a 1999 Jeep Grand Cherokee Laredo 4.0L (I6 engine) when wiring harness issues are suspected. This will include tests with your multimeter, exact harness connector locations, and instructions for continuity and signal verification.

I’ll update you once the diagnostic guide is ready.