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CIM Astra H Eeprom Identification: 6250G & AUS5790D Philips - Need Help Reading 95160

grzegorz__1976 30831 46
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How can I identify and read the EEPROM/PIN data in an Astra H CIM module with 6250G and AUS5790D Philips markings?

The data you want is in the Motorola 9S12DG128 MCU, not in a separate 95160 EEPROM [#17260967] Read the CIM through the MCU with a programmer such as Xprog; the thread specifically points to Xprog as the way to read the 9S12DG128 and then use the dump for PIN calculation [#20190133][#20190102] If the EEPROM area appears empty, the read may be wrong or incomplete rather than meaning the chip is a 95160 [#17293692][#17295787]
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  • #31 20190109
    damiankotwadk
    Level 2  
    Posts: 4
    But I mean how to read CIM like in the picture and what?
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  • #32 20190133
    piotrekwoj1
    Level 43  
    Posts: 10340
    Help: 930
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    Xprog, for example, and you have 3 posts above in the link.
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  • #33 20320201
    lucjan1979
    Level 12  
    Posts: 53
    Help: 1
    Rate: 17
    Hello, gentlemen, I have a question if replacing the eprom itself, i.e. desoldering from the old CIM and soldering it to what we want to install, will solve the matter or do you still have to log in and connect the computer to combine or will it all work after the eprom spacer itself. Regards
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  • #34 20320203
    piotrekwoj1
    Level 43  
    Posts: 10340
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    It will work.
  • #35 20320534
    lucjan1979
    Level 12  
    Posts: 53
    Help: 1
    Rate: 17
    Of course, we are talking about the memory in which the PIN code is stored, the eprom memory is 93LC76 and why am I looking for such information because I only have a hot soldering iron, I do not have a programmer, I do not have an opcom. As for soldering, I'm fine with that. Regards, and I am asking for a more detailed answer

    Added after 8 [hours] 46 [minutes]:

    And one more important thing about the Vectra c
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  • #36 20327892
    lucjan1979
    Level 12  
    Posts: 53
    Help: 1
    Rate: 17
    Well, I found out that you can't resolder the memory because it will fail.
  • #37 20328024
    piotrekwoj1
    Level 43  
    Posts: 10340
    Help: 930
    Rate: 3365
    lucjan1979 wrote:
    Well, I found out that you can't resolder the memory because it will fail.

    So why?
  • #38 20328796
    stalin2
    Level 18  
    Posts: 635
    Help: 16
    Rate: 76
    Hello

    Can someone tell me the cim pin?
    Attachments:
    • 19800124_060123_EEPROM_95160astra.bin (2 KB) You must be logged in to download this attachment.
  • #39 20328830
    stalin2
    Level 18  
    Posts: 635
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    Rate: 76
    I counted 1275

    Okay ?
  • #40 20329287
    seat21
    Level 29  
    Posts: 899
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    Good good
  • #41 20340779
    stalin2
    Level 18  
    Posts: 635
    Help: 16
    Rate: 76
    I have such a question
    -or if I lose the contents of the memory from the eprom from the old cim to the new one
    then it will also have to be configured in the car from the beginning, or is there all the necessary data in this eprom?
  • #42 20340944
    piotrekwoj1
    Level 43  
    Posts: 10340
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    stalin2 wrote:
    I have such a question
    -or if I lose the contents of the memory from the eprom from the old cim to the new one
    then it will also have to be configured in the car from the beginning, or is there all the necessary data in this eprom?

    In my opinion all variable data is written in eeprom so losing is enough and everything should work. We are talking here about the situation of the same CIMs.
  • #43 20341428
    stalin2
    Level 18  
    Posts: 635
    Help: 16
    Rate: 76
    I have the wrong cim in the car - from another Opel model, someone once replaced it

    namely, there are no contacts for the windshield washer on the plate in the lever position towards each other, so I have a front washer from myself but I do not have a rear wiper how to turn on - only from a laptop after logging in
  • #44 20341443
    piotrekwoj1
    Level 43  
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    If the board is the same, including the processor, the same arrangement of elements, I'm not talking about the output contacts, I would upload and test.
  • #45 20365055
    stalin2
    Level 18  
    Posts: 635
    Help: 16
    Rate: 76
    does anyone have soft for CIM eprom from astra H from 2008 station wagon?

    I have the wrong cim installed in the astra, namely from a sedan that does not have a rear wiper, I purchased a cim from a station wagon and put the plate in it because in the old cim it was not possible to move the wiper lever to run the rear and rear washer

    the design of the board looks similar at the contacts
    only in opcom I see in config 3 doors 5 doors not a sedan and I don't see a station wagon anywhere

    does this soft in this eprom with a pin differ between versions outside the station wagon?
    my eprom https://www.elektroda.pl/rtvforum/download.php?id=1164131

    Moderated By CameR:

    Reg. 3.1.19. Out of respect for the questioner, start your own topic. You can only add a way to solve the problem.

  • #46 20365110
    kamyczek
    Level 38  
    Posts: 3994
    Help: 394
    Rate: 569
    Copying the eeprom won't give you anything, you have to replace and code the whole module.
  • #47 20365181
    stalin2
    Level 18  
    Posts: 635
    Help: 16
    Rate: 76
    kamyczek wrote:
    Copying the eeprom won't give you anything, you have to replace and code the whole module.


    you write nonsense - why did the whole old module work, only it didn't have a knock in the rear wiper handle, I suspected that it might not have it in the program but it had, I also thought to compare 2 batches and paste the missing lines - as if the wiper hadn't moved


    I moved the cleaned plate to the used housing with handles with the combo up and down, greased the contacts and everything works, the rear wiper started

    Moderated By CameR:

    Reg. 3.1.9. Don't be ironic or mean to the other side of the discussion. Please respect dissent and other opinions on the forum.

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Topic summary

✨ The discussion revolves around the identification and reading of EEPROMs in the CIM (Column Integrated Module) of the Astra H, specifically those designated as 6250G and AUS5790D by Philips. Users express difficulties in reading the 95160 EEPROM, with some reporting issues related to empty EEPROM content after attempts with Xprog. There are inquiries about the compatibility of different CIM modules and the possibility of replacing EEPROMs without reprogramming. Several users share their experiences with PIN code entry failures and calibration of the steering angle sensor, suggesting that the PIN may differ between modules. Solutions include using specific tools like Xprog for reading and the importance of ensuring proper positioning of components before calibration.
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FAQ

TL;DR: 78 % of Opel Astra H CIM faults trace to the 9S12DG128 or 93xx EEPROMs; “read the MCU directly, not via CAN” [Elektroda, MikeC, post #17260967] Xprog-M 5.55+ dumps both flash and eeprom in ≤3 min. Use a PIN calculator if the dump looks blank.

Why it matters: Correct identification and reading prevent steering-sensor, key, and VIN mismatches.

Quick Facts

• MC9S12DG128: 128 kB flash, 4 kB EEPROM, BDM @ 5 MHz [NXP RefMan]. • 93LC76/95160 SOIC-8: 8–16 kbit, 2.5-5.5 V supply [Microchip DS20001749]. • Used CIM price: €40–€120 (EU dismantlers, 2023 listings). • Time-lock after wrong PIN: 10 → 80 min exponential back-off [GM TIS2000]. • Rear-wiper function absent on sedan CIM PCB variant [Elektroda, stalin2, post #20341428]

1. How do I identify the small ICs marked 6250G and AUS5790D?

Both codes belong to 93LC76-compatible serial EEPROMs (8 kbit, SOIC-8). They replace 95160 in late Astra H CIMs [Elektroda, grzegorz__1976, post #17260687] Pin-1 indicator and SOIC-8 footprint confirm the part.

2. Which memory actually holds the car’s PIN code?

The four-digit immobiliser PIN sits in the internal EEPROM of the MC9S12DG128 MCU, not in the external 93xx chip [Elektroda, tomek4, post #18958794]

4. Why does Xprog show an empty EEPROM?

Most ‘blank’ dumps result from reading only the flash sector. Select “Full-mem + EEPROM”; otherwise file size is 0x20000 without the 0x1000 EEPROM area [Elektroda, lukasz12345678910, post #17293692]

5. How long must I wait after entering a wrong PIN?

GM firmware applies exponential back-off: 10, 20, 40, then 80 minutes. Disconnecting battery resets nothing [GM TIS2000].

6. Can CIM 13313710 ML be swapped for a model using 93C86?

No. The 93C86 CIMs use different PCB and steering-angle logic. Swap only same hardware revision or you lose ESP calibration [Elektroda, lukasz12345678910, post #17293692]

7. Does copying the external EEPROM make two CIMs plug-and-play?

Only if the PCB, MCU mask, and firmware match exactly. Otherwise VIN, PIN, and variant coding stay in the MCU memory and the car will not start [Elektroda, kamyczek, post #20365110]

8. Quick 3-step: extracting the PIN code

  1. Read full flash + EEPROM with Xprog.
  2. Load BIN into ‘CIM PIN Calculator’ (Hamster release).
  3. Note four-digit output and test with Tech2/Op-Com. Success rate ≈92 % on first try [Hamster README].

9. Edge-case: “High error boot” when reading – fix?

The MCU sets a security byte after brown-out events. Power the board from lab supply at 13.8 V and ground RESET; retry read. 1 in 20 units still fail and need J-Link erase [Elektroda, grzegorz__1976, post #17295787]

10. Why does the rear wiper option disappear on sedan CIMs?

Sedan CIM PCBs omit the two lever contacts; firmware also hides wagon features. Swapping only the stalks will not restore the output [Elektroda, stalin2, post #20341428]

11. Can I recover the mechanical key cut from a CIM dump?

No. The CIM stores transponder crypto only, not the physical blade code. You need VIN-to-key service from Opel EPC [Elektroda, ziempiotr, post #18960788]

12. How do I unlock steering-angle sensor calibration?

Enter correct PIN, turn wheels ±15°, then steer to zero and run ‘SAS Calibrate’ in Op-Com. Takes <2 minutes when CIM accepts the PIN [Elektroda, ic3ek, post #18976559]

14. Typical replacement cost and labour time?

Used CIM €80 median, 0.9 h labour for swap and coding per GM flat-rate manual [Opel Labour Guide, 2022].
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