PCMTuner Module 71 Bench Mode Not Working Solution
Here are the tips if failed to read ecu edc17cp45, edc17c06 etc on bench mode with pcmtuner module 71.
Tips before changing resistor:
If you get problem on identify and reading, just remove power supply of pcm tuner box.
And make another source of power and ground, and it works perfectly. No need to change resister.
If still not working, follow instructions below to replace resistor.
PCMTuner comes with spare transistors for GPT circuits, lots of people damage these by connecting wrongly to ECU so these are replacements if it happens.
If you use OBD for power supply, please do not plug in a separate 12V, otherwise, it will cause the device transistor or step-down chip to burn.
MUST USE PCMtuner power supply!
If you use your own lab power and voltage regulator. You don’t know how device power works. Just adjust the voltage to 13.5 or whatever you think will cause the whole triode to burn out.
Resoldered two transistors K1P, and work bench mode. One soldered K1P other analog p1P, I had only one K1P.
replace first this transistor, K1P, analog 1P,p1P
k1p mmbt2222a – 0.6A 40/75V and p1p pmbt2222a – 0.8A 40/75V
Read on bench module 71 successfully.
If not working after replacing these resistors, check other transistor positions and get it replaced.
PCMTuner Facorty Solution:
- N1 transistor: MMUN2113LT1G
- N2, N3 transistor: MMUN2211LT1G
- Q3 Q9 Q10 Q11: MMBT222A-7-F
The corresponding positions are marked below:
- Q3, Q9, Q10, Q11 transistor: with MMBT2222A-7-F
The corresponding positions are marked below:
UPDATED:
Some people have some problems with pcmtuner module 71 even after changing the transistors, they still don’t read module 71. In the PCM Flash App, in the settings, the option “Use other GPT outputs pins with PCMtuner hardware” was enabled, and it must be disabled, confirm yours.
It should work after changing the transistors and deactivating this option.
