![]() ![]() Nice to hear does some other technicians run into trouble like I'm with the ecu repairing stuff like I did. Send it back to customer and problem returns. To me that sounds more like a £500-£1000 job rather than a £50-£100 job.Īnd what I have said is not even considering intermittent faults - someone could have all this equipment and skills, spend a whole day testing and find the ECU is perfect. Then I thought to actually set up this full simulation would need so much specialist equipment and knowledge, and to then pinpoint the fault in the ECU will need more specialist knowledge and skills. to connect or simulate all sensors and actuators (and to think that maybe different years had different sensors/actuators and to always use the correct ones), then would need to fully simulate engine running under all different kinds of conditions. I was thinking to really test an ECU properly, would need to simulate a whole engine - e.g. ![]() open ECU and check for water damage, check for burnt traces on PCB, check transistors for injectors are good, etc.), then maybe they have list of top 10 most common faults for each ECU, then if they cannot find fault after these basic checks they say ECU is fine. My suspicion, most of the ECU repair companies can do basic tests (e.g. I have had few experiences with ECU tested by company who say ECU is fine (or has been repaired), but ECU still has same fault. ![]() Please excuse me if I am wrong but this is the conclusion I have come to. I'm also thinking to make a DIY ecu bench tester ( if somebody have some schematic, info, idea would be nice ). use scope for tracking signals from/to cpu etc. put the outputs under load and try actuator testsnthrough diag tools ( when this is possible ) measure the outputs does they in short or how much is the resistance of the I/O pins ( like injector driver output ) and compare with other. So, I'm confused about all that repairings on an ecu and how to test an ecu on the bench. Then I send back for repair under warranty etc. I get back the Ecu, put it into the car and some errors are figures out. than I but the result is sometime the same as mine. I also sent some ecu's to some company who give warranty and have more knowledge, equipment etc. Sometime I need to repair again in a short time after bench test etc. Some time I have to repair ecu's but I'm always in doubt does I really finished the repair or not. ![]()
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