MH7202F Flashing

Technical information, definitions, advice, and support for factory ECU remapping, aftermarket systems, and much more.
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Gus
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State: Western Australia
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Engine: 3.5-Litre 6G74 V6 24V SOHC
Transmission: 5 Speed Manual

MH7202F Flashing

Post by Gus »

I have a Manual Magna ECU with MH7202F ---- I could not read it , some say its not flashable , but I ve been reading otherwise

PLASTIC CASE mmal part no: md 362395
bosch part no: f005 e0 029
mitsi no JE331B154D
6g74 dom
H7D42
Body 4174

The Harness had 2 wires in the Flash Connector


Do I need the Definition Files


Or Do I need to HOTWIRE

Fit Hot Wire A- Auto M - Manual

On a Magna/Verada OBD2, you are looking for Pin 7 (A/M). This should be a brown with white stripe. Splice into this
with a length of wire that is long enough to go the the vehicles ecu. Make sure to solder or crimp all
connections so you get a good join.
Locate pin 85 (A) or pin 62 (M). This should be a solid brown wire. Splice into this with the other end of the
wire from the OBD2 plug.

WytWun
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State: Australian Capital Territory
Model: Mitsubishi Magna TJ AWD
Engine: 3.5-Litre 6G74 V6 24V SOHC

Re: MH7202F Flashing

Post by WytWun »

Gus wrote:
02 Jan 2020, 11:36
I have a Manual Magna ECU with MH7202F ---- I could not read it , some say its not flashable , but I ve been reading otherwise
If the big chip is clearly marked as an MH7202F the ECU definitely should be readable and flashable with the right equipment (which means an OpenPort 2.0 cable) unless it has been electrically damaged.
Gus wrote:
02 Jan 2020, 11:36
The Harness had 2 wires in the Flash Connector
This is for an F or H series automatic harness: the wired pin at the end of the row is for the ECU and the wired pin second from the end is for the TCU. The reflashing connector on the OpenPort cables is only configured to access the ECU pin; if you're only after reading/flashing the ECU you don't need to worry about the TCU pin. Otherwise you need to rig a switch to alternate the ECU and TCU flash connections to the ECU pin in the flash connector.

J/L/W series harnesses only have the 1 pin wired in the reflash connector (which gets access to the combined ECU/TCU ROM).

All 3rd gen Magna/Verada automatic ECUs have 4 connectors each with 3 rows of pins; manual ECUs have 4 connectors each with 2 rows of pins.
Gus wrote:
02 Jan 2020, 11:36
Do I need the Definition Files
To read a ROM you don't actually need a definition file - you can read and save without one. You need a suitable definition file to actually view the tables/maps in the ROM once it has been read though.
Gus wrote:
02 Jan 2020, 11:36
Or Do I need to HOTWIRE

Fit Hot Wire A- Auto M - Manual

On a Magna/Verada OBD2, you are looking for Pin 7 (A/M). This should be a brown with white stripe. Splice into this
with a length of wire that is long enough to go the the vehicles ecu. Make sure to solder or crimp all
connections so you get a good join.
Locate pin 85 (A) or pin 62 (M). This should be a solid brown wire. Splice into this with the other end of the
wire from the OBD2 plug.
If I recall correctly, this advice was specific to F series cars as the immboliser unit is "inline" with the flashing connector ECU wire and causes the read attempt to fail. This isn't a problem in H series cars which have straight-through reflash wires. The wiring mod circumvents the immobiliser interference to the reflashing signal but doesn't deactivate the immobiliser function.

Gus
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Joined: 25 Mar 2019, 13:22
State: Western Australia
Model: TH
Engine: 3.5-Litre 6G74 V6 24V SOHC
Transmission: 5 Speed Manual

Re: MH7202F Flashing

Post by Gus »

It is a MANUAL ECU

stumagoo
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Joined: 01 Jul 2014, 23:27
State: Western Australia
Model: Mitsubishi pajero
Engine: 3.5-Litre 6G74 V6 24V SOHC
Transmission: 5 Speed Manual

Re: MH7202F Flashing

Post by stumagoo »

Pajero ecu's come with this chipset and the same ecu for manual and auto (they have a second trans ecu) I have successfully flashed this by changing the chipset to the non FA chipset (H8539F) does both 7202F and 7203F chipsets for the Pajero the 7203FA is H8539FA

Ironically the pajero ecus have the same MD part number on them for all 3 chipsets and the exact same maps as far as we can tell

BCX
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Model: Mitsubishi Galant VR4
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Re: MH7202F Flashing

Post by BCX »

stumagoo wrote:
18 Jan 2020, 15:12
Pajero ecu's come with this chipset and the same ecu for manual and auto (they have a second trans ecu) I have successfully flashed this by changing the chipset to the non FA chipset (H8539F) does both 7202F and 7203F chipsets for the Pajero the 7203FA is H8539FA

H8539F should only be used on a 7202
H8539FA should only be used on a 7203

Flash segments between these two processors are different and wrong flash method can erase a segment then fail the flash, potentially bricking it.

You can read a ROM using either memmodel, it's the reflash part thats different.
8th Gen Galant VR4
MK Triton [6G74 conversion]

professor_jonny
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Re: MH7202F Flashing

Post by professor_jonny »

From what I gather there is several different ecu's for the Pajero some are similar to the TF magna with an imbedded transmission controller
[url]http://www.4x4extremesports.com/index.php?http://www.4x4extremesports.com/montero_sport_ecu_ecm.php[/url]

stumagoo
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Joined: 01 Jul 2014, 23:27
State: Western Australia
Model: Mitsubishi pajero
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Transmission: 5 Speed Manual

Re: MH7202F Flashing

Post by stumagoo »

You are correct Prof Johhny - Paj/Montero sport (known here as Challenger) tend to have specific ecus between auto and manual as do Gen 3 on

How ever the OP is about a single model of Gen 2 which have 3 chipsets available here (and even teh US ones use the same set but with a different code as its OBD2 there and Mutt 2 here)... All 3 chipsets have the same bin file and same Part number and id code for the ecu. I have dealt with all 3 and used the same definition on them (modified to suit the chipset only) memory addresses are the same thorugh all 3

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