Module 94 - Aisin SH705x TCU Bootloader

Caption:

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

Supported ECU

• Aisin SH705x TCU (FLASH) [RD/WR/CK]
• Aisin SH705x TCU (EEPROM) [RD/WR]
• Aisin D70F4019 TCU (FLASH) [RD/WR/CK]
• Aisin D70F4019 TCU (EEPROM) [RD/WR]
• Aisin R7F7012xx TCU (FLASH) [RD/WR/CK]
• Aisin R7F7012xx TCU (EEPROM) [RD/WR]

In version 1.3.4, a new module was added, designed for service mode operation “on the bench” with VAG transmission ECUs AQ250 (09G)/AL750 (09D)/AL1000 (0C8), Volvo/LR/Ford AWF21, Mini GA6F21WA, Mazda AW6A-EL, which use SH705x microcontrollers. This module supports reading, writing, checksum verification, and correction for FLASH, as well as reading and writing for EEPROM. ECU cloning is also possible. At the time of the module’s release, there were no market equivalents.

Supported functions:

• Aisin SH705x TCU (FLASH) [RD/WR/CK]
• Aisin SH705x TCU (EEPROM) [RD/WR]
• Aisin D70F4019 TCU (FLASH) [RD/WR/CK]
• Aisin D70F4019 TCU (EEPROM) [RD/WR]
• Aisin R7F701204/R7F701216 TCU (FLASH) [RD/WR/CK]
• Aisin R7F701204/R7F701216 TCU (EEPROM) [RD/WR]

In these ECUs, the EEPROM is external, while the FLASH is internal.

NOTE: Not all ECUs are built on these processors. The listed processors were used roughly from 2005 to 2019, depending on the make and model of the vehicle. Around the 2010s, Aisin started using M32R family processors alongside SH7058 (for VAG, blocks with different processors had the same part number). Later, the V850 family was used in parallel with SH7059. Therefore, if you are planning to buy this module but are unsure about the processor type, it is recommended to use the identification feature, which works without activating the module.

Work begins with identification. The result looks like this:

• Module: Aisin SH705x TCU (FLASH)
• Identification
• Entering programming mode
• ECU Type: AW_SH7058S/SH7059
• Completed

It is important to determine the processor type for compatibility checks and to select the correct ECU Type during reading and writing (pay attention to the dropdown list). This affects the correct functioning of the module (checksums, EEPROM size).

Reading and writing take no more than two minutes, so there’s nothing particularly interesting here:

21:23:51 Entering programming mode

21:23:51 Transferring bootloader

21:23:52 Verification

21:23:52 Module identification

21:23:52 ECU Type: AW_SH7058S

21:23:52 Flash: 1024KB

21:23:52 Reading block 1

21:24:15 Verification

21:24:16 Completed successfully

In version 1.3.5, test support was added to the module for Aisin ECUs with NEC D70F4019 microcontrollers, used in transmissions such as VAG AQ250 (09G), AL1000 (0C8), PSA AM6-3, Isuzu AWR6B45-2, Mitsubishi V8AWG, Toyota/Lexus AE80F, and Volvo AWF8F35, BMW/Mini GA8F22AW. These cover approximately 2014-2020. Operations supported include reading and writing of the built-in FLASH and EEPROM memory via direct connection to the ECU port (no disassembly required), along with checksum verification and correction.

Supported operations:

Aisin D70F4019 TCU (FLASH) [RD/WR/CK]

Aisin D70F4019 TCU (EEPROM) [RD/WR]

In version 1.3.5-1, support was added for Aisin ECUs with Renesas R7F701204 and R7F701216 microcontrollers, used in transmissions such as VAG AQ600 (09S), PSA AxN8, BMW/Mini GA8F22AW/GA8G45AW, and Toyota/Lexus AJA0F. Supported operations include reading and writing of the built-in FLASH and EEPROM memory via direct connection to the ECU port (no disassembly required), along with checksum verification and correction.

Connection diagrams are available in the downloads section.

P.S. For working with these ECUs via the diagnostic port (convenient for tuning), there is (at least a test version) support in modules 9, 81, 83. Volvo and Mini are not supported by any.

Support by brands and comments (regarding transmissions with SH705x):

1. Mazda, AW6A-EL transmission – Aisin ECU in an aluminum alloy casing, used in the CX7 (other models have Melco transmission ECUs!). It is mounted directly on the transmission (as in Ford/LR/Volvo), and uses the SH7058S processor. Towards the end of production, Aisin replaced the processor with M32R! There is another Aisin on the MX5, but it is unlikely we will encounter it.
2. Mini, GA6F21WA transmission – Aisin ECU in a metal casing, approximately used on models R55-R61 (around the 2010s), with the SH7058S processor.
3. VAG, AQ250/AL750/AL1000 transmissions – Aisin ECU in a plastic casing, used across various vehicles in the group. SH7058/SH7059 processors may overlap with M32R and D70F4019 (V850). AL600 units may also appear, but older versions (with the processor under a shield) are not supported.
4. Volvo/LR/Ford, AWF21 transmission – Aisin ECU in an aluminum alloy casing, mounted directly on the transmission, used in many vehicles related to the Ford CD345 platform. These may be interchangeable, but it’s necessary to confirm that the EEPROM size and processor type match. Volvo was the first to adopt this unit (around 2005), using SH7055 (without “S”) processors, which have TWO external connectors. From around 2006, it was used in the Freelander 2 (with several different versions), and from 2007 in the Mondeo 4. From 2011, M32R-based units may be found. They were phased out around 2014.

PSA – Not included in the program. The design is similar to Mazda/Volvo/LR/Ford, but the pinout differs. It can be used similarly, but checksum (CK) must be disabled, or you can contact me to add support (only one unit has been tested).

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