Module 80 - Denso SH725xx Bootloader

Caption:

• RD: Read
• WR: Write
• CK: Checksum correction

Direct connection to the ECU connector is required for operation!

Supported ECU

• SH725xx FLASH [ RD/WR/CK ]
• SH725xx EEPROM [ RD/WR ]
• 1N83M FLASH [ RD/WR/CK ]
• 1N83M EEPROM [ RD/WR ]

In version 1.2.3-1, a new module 80 has been added. This module is designed to work with Denso ECUs that use SH725xx family processors. It supports reading, writing, checksum correction (for the listed ECUs), FLASH memory operations, EEPROM reading and writing, and ECU cloning. Below is the current list of supported ECUs with their respective processor families:

Supported ECUs by Manufacturer and Processor Family:

1. Subaru:

• Petrol: SH72531 (plastic, metal)
• Diesel Euro6: SH72543 (not tested)

2. Mazda (Gen3/Crypto):

• Petrol: SH72531 (not tested)
• Automatic Transmission SKYACTIV: SH72531
• Petrol SKYACTIV-G: SH72543
• Diesel SKYACTIV-D: SH72543/SH72546

3. Volvo:

• Petrol 2.5T: SH72543
• Diesel Euro6: SH72546

4. Kia/Hyundai:

• Trucks, Diesel Euro6: SH72543
• Small-Diesel Euro6: SH72546

5. Mitsubishi:

• Diesel 4N14 Euro6: SH72543

6. FAW:

• Petrol: SH72530

7. Suzuki:

• Petrol: SH72530/SH72533

8. Nissan:

• VCM: SH72531

This is not an exhaustive list, as some information is either unavailable or insufficient. However, various commercial vehicles with Euro 6 diesel engines built on ECUs similar to those of Kia/Hyundai are also supported, as this is essentially an OEM solution from Denso.

Important: Operation is on table, with power management, including manual control. However, using an automatic setup is recommended. Suitable cables include Scanmatik 2 cables, Powerbox for pcmflash, and modified boxes from KESS. Control is managed as usual via the K-line. ECUs are not affected by power interruptions.

Connection schematics: collected in an album, available for download here https://pcmflash.ru/downloads/.

Writing optimization has been implemented (similar to modules 53, 71, 77) — only changes are written, service areas are skipped — only the software area is written. You can use files prepared for OBD.

Please pay attention to the EEPROM. The processor’s D-Flash (Data Flash) memory has a third state called “erased,” which applies to groups of 8 memory cells. When reading erased cells, instead of random garbage data (as is the case with some loaders), a placeholder string like PCMFLASH is used. Visually, these areas are noticeable in the memory dump. When writing, such cells will remain in the erased state. Some loaders use a different placeholder (for example, K-Tag) or double-sized files where the second half contains a usage mask. The latter are not supported; we’ll see if there is any demand for this functionality. Currently, operation is guaranteed only with files read by PCMflash.

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