after a year of running perfectly, yesterday I tried to start my cherokee, it cranks, wont start.
fuel pump is not producing pressure, check engine light does not come on in “run” mode.
I jump relay socket at fuel pump relay, pump comes on, swapped relays ,still no pump action,… with ignition at run position, I get batt voltage at plus side of relay coil so the ignition switchis likely good, when I connect obd scanner I get a communication error . The powertrain control module is not shorted to gnd as I checked for this common problem.
Any other way to test powertrain control module before I shell out $200?
I have a fluke multimeter and an obd scanner