It patently wasn't "okay" because a new ECU resolved the fault (injector drivers dead).
But when the PCM was returned from Actronics with "tested okay" stamped on it, I then wasted a good deal more time retesting before arriving at the original conclusion - ECU deceased.
A phone call to Actronics with the confirmed failure of their testing processes proven, garnered the admission - they couldn't accurately test the injector driver circuit & therefore were unable to accurately state the PCM was definitely "okay".
The engineer I spoke to said it is impossible to test certain circuits accurately unless it is plugged into the car.
We've had bad returns from BBA & others & have now given up with ECU testing to the point where we won't even fit a unit the customer has sent for repair. The aggravation involved when it doesn't work or comes back with new & interesting faults it didn't have before being reapered (genuine typo) isn't worth the hassle of the "it was fitted wrong" "no it was repaired badly" shenannigans that goes on with some of these bandits.
I have however heard good reports on the Bosch Ecu repair service - I just wouldn't use them due to a complete lack of trust in the repair processes applied by some of these companies.
How do we vet if they can actually do the job properly? we can't.
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