How to Replace Transistors if PCMTuner Module 71 Bench Not Working?
PCMTuner comes with spare transistors MMBT2222A for GPT circuits, lots of people damage these by connecting wrongly to ECU so these are replacements if it happens.
You can replace transistors by yourself or at the local repair shop.
The error is usually caused by other power supply not pcmtuner will burn the device.
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 professional 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.
How to Replace Resistors?
Replace PCMTuner transistors.
Make sure the device and ecu
connection via bench cable is proper before changing.
Select the correct
protocol (ECU model) in pcmflash software when reading or writing ECU.
Customer solution:
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
PCMTuner Factory Solution:
Which transistors need to be replaced?
- N1 transistor: with MMUN2113LT1G
- N2, N3 transistor: with MMUN2211LT1G
The corresponding positions are marked below:
- Q3, Q9, Q10, Q11 transistor: with MMBT2222A-7-F
The corresponding positions are marked below:
Lots of fixed this problem follow the customer solution. edc17cp45, edc17c06 tested bench mode module 71 all ok.
Technical support from https://www.iecutool.com/service/pcmtuner-module-71-bench-mode-not-working-solution.html
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