This article is a guide of PCMTuner V1.21 on PCR2.1 ECU model.
Download & Search to check supported PCR.2.1 ECUs:
Step 1. Check ECU lock status
Connect our device to the ECU in car, and check current lock status by ID function.
If it says “Verification Check: Disabled”, it means the check is disabled, and then we can read&write ECU in car.
If not, go to step 2.
Step 2. Switch ECU into BSL mode
Remove the ECU.
Switch the chip into BSL mode. (connect these parts by 2 1kohm resistors as the diagram)
Red to +12v
Black to GND
Yellow to CAN-H
Blue to CAN-L
Step 3. Read data
Select PCR2.1 (EEPROM/UNLOCK/BSL)
Click “Identification” to save ECU data.
Click “Read” to save EEPROM data.
If the ECU is encrypted, go to step 4.
Step 4. Initialize
Now we need to initialize PCR2.1.
It may prompt:
Entering programming mode
The digital signature verification check: Disabled
Then we can restore ECU from BSL mode, install it back to car, and read&write in car.
Alright, that’s how we read&write PCR2.1 ECU by PCMtuner.
Guide via Mr. Bondango
Any questions, contact us.
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