This a vehicle belonging to a friend.
When the code reader is plugged into the OBD port it will not connect to the system to read the codes. The check-engine light is "on". I suspect it lacks either power or ground.
A little history; a few weeks ago, a shop replaced the intake manifold. Vehicle ran fine after the replacement (no CEL's). It is my understanding that a large portion of the wiring harness under the hood must be removed for manifold replacement. This may be a contributor to the problem.
Two days ago vehicle developed a misfire and CEL appeared (suspect defective coil). When we tried to read codes, we could not. In the past there was no problem
Could you provide me with the following: Fuse number and location that provides power to port, Pinout of port in particular power and ground pins, wiring diagram of power and ground on the port and any other insight on correcting the problem.
Thank you in advance for your response!
When the code reader is plugged into the OBD port it will not connect to the system to read the codes. The check-engine light is "on". I suspect it lacks either power or ground.
A little history; a few weeks ago, a shop replaced the intake manifold. Vehicle ran fine after the replacement (no CEL's). It is my understanding that a large portion of the wiring harness under the hood must be removed for manifold replacement. This may be a contributor to the problem.
Two days ago vehicle developed a misfire and CEL appeared (suspect defective coil). When we tried to read codes, we could not. In the past there was no problem
Could you provide me with the following: Fuse number and location that provides power to port, Pinout of port in particular power and ground pins, wiring diagram of power and ground on the port and any other insight on correcting the problem.
Thank you in advance for your response!
May 16, 2025 at 9:55 PM
