(Solved) Yanhua Mini ACDP Read BMW CAS3/3+ CAS4/4+ decryption data failed

yanhua acdp-01

Here are the solutions of Yanhua ACDP  Key programmer Reading BMW CAS3/3+ CAS4/4+ decryption data failed.

Part 1: Analysis of BMW CAS3/3+ decryption data failed

Question: When reading CAS3/3+ by ICP and all pin detection passes, Why the data cannot be read?

Specific tips as shown below:

solved-yanhua-mini-acdp-read-bmw-cas3-3-cas4-4-decryption-data-failed-1 solved-yanhua-mini-acdp-read-bmw-cas3-3-cas4-4-decryption-data-failed-2 solved-yanhua-mini-acdp-read-bmw-cas3-3-cas4-4-decryption-data-failed-3

Answer: If the above problem occurs, the decryption progress bar will reach 100%. But in normal cases, the chip decryption progress bar will not reach 100%. At the moment, Need to detect whether the ETX and C-GND pins of the CAS3/3+ interface board are in good connection. The data can only be decrypted when the pin detection passes and ETX and C-GND pins in good connection.

The ETX and C-GND pin interface board locations are shown as below:

solved-yanhua-mini-acdp-read-bmw-cas3-3-cas4-4-decryption-data-failed-4

Part 2: Analysis of BMW CAS4/4+ decryption data failed

Question: When reading CAS4/4+ by ICP and all pin detection passes, Why the data cannot be read?

Specific tips as shown below:

solved-yanhua-mini-acdp-read-bmw-cas3-3-cas4-4-decryption-data-failed-5 solved-yanhua-mini-acdp-read-bmw-cas3-3-cas4-4-decryption-data-failed-6

Answer: If the above problem occurs, the decryption progress bar will reach 100%. But in normal cases, the chip decryption progress bar will not reach 100%. At the moment, Need to detect whether the EXT and C-GND pins of the CAS4/4+ interface board are in good connection. The data can only be decrypted when the pin detection passes and EXT and C-GND pins in good connection.

The ETX and C-GND pin interface board locations are shown as below:

solved-yanhua-mini-acdp-read-bmw-cas3-3-cas4-4-decryption-data-failed-7

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