2KS and MBL C12 engines use the 70-pin ADEM III module, our fastest lane: 3 to 5 days on the bench. Earlier 1YN and 9NS engines use the 40-pin ADEM II module, 15 to 30 days. Programmed back to your engine serial, 2-year warranty.
Failed flash recovery available.
On every Cat 70-pin ECM we repair, we upgrade the injector drivers for durability and replace the internal battery.
Sale through October 31: $525 on every Cat 70-pin repair (regularly $745). 40-pin and 120-pin repairs stay $745.
C12 modules share their electronics with the 3406E and C10, so they fail the same ways and repair the same ways.
What you see: the battery went dead on the truck or machine, or it got jump started, and now it cranks and won't fire, or it won't do anything at all. It ran fine before the battery died. This is the classic ECM failure.
The quick check: turn the key on and watch the dash. The check engine light should come on for a few seconds. If it never lights up, there's a good chance your ECM is not waking up.
What we do: check the ECM fuses and battery cables first. If those are good, send the ECM in. We get it powering up again, test it on the bench, and send it back programmed to your engine.
What you see: A miss or dead hole that stays after an injector swap, or a cutout test where one channel does nothing.
What's happening: Injector driver failure inside the module.
What we do: We rebuild the driver circuit and bench-fire every injector channel.
What you see: The engine may or may not run, but no tool will connect. Cannot read codes, cannot program.
What's happening: Data-link circuit failure in the ECM.
What we do: We restore the data link on the bench so it can be read and programmed again.
What you see: Dead key-on, or the engine stalls when it gets hot or hits a bump.
What's happening: Internal power supply, cracked joints, or corrosion on the connector side of the board.
What we do: We repair the supply and connector faults at the component level and thermal-cycle the module on the bench.
What you see: Throttle, boost and pressure sensor codes together that do not clear with new sensors.
What's happening: The ECM 5-volt sensor supply is shorted or sagging.
What we do: We repair the sensor supply and verify each channel before it ships.
Don't see your exact symptom? Send it in anyway. We bench-test every unit before we tell you what's going on, and if we fix it the diagnostic cost you nothing.
Give us your engine serial prefix and we know which module you have.
| Arrangement | ECM generation / connector | Our bench |
|---|---|---|
| 2KS | ADEM III, 70-pin (157-3705, 179-1747, 10R-4090) | 3-5 days |
| MBL | ADEM III, 70-pin | 3-5 days |
| 1YN, 9NS | ADEM II, 40-pin (117-4017) | 15 to 30 days |
Self-ship free, or add a prepaid UPS label. Drop-offs in Princeton, MN by appointment. Include your engine serial number.
70-pin units: you pay the repair price at checkout, and if we can't fix it you get a full refund. 40-pin units: $350 bench fee, credited the same way. We tell you exactly what failed, usually within a day of receipt.
Injector driver repair, communication restoration, power-supply and 5-volt sensor supply repair, parameter recovery, whatever it needs. 3 to 5 days on the bench.
Programmed to your engine, every channel bench-tested, lifetime warranty. Status email at receipt, at diagnosis, and at ship.
If yours is beyond repair, or the truck can't wait: remanufactured, bench-tested, programmed to your engine serial, 2-year warranty. Usually ships within 10 business days, often sooner.
On a 70-pin unit, you get a full refund when it is a normal failure we could not fix. We fix the large majority of the 70-pin ECMs that come in. The exceptions are when the ECM itself is the reason: a board that is cracked, burned, or eaten by water and corrosion, a proprietary chip that is no longer made, or damage from an earlier repair attempt. In those cases, and if your ECM tests good with nothing wrong, $150 covers the bench test, the written report and the return shipping, and we refund the rest. You can also put what you paid toward a tested exchange unit.
The 70-pin repair is $525 flat (sale through October 31, regularly $745), bench fee included, and 40-pin and 120-pin repairs are $745 flat. On 70-pin units you pay the repair price at checkout, before you ship it. If we can't fix a 70-pin, you get a full refund, unless the board itself is damaged beyond repair, a part is no longer made, or it tests good. Then $150 covers the bench test, the report and return shipping, and we refund the rest. 40-pin units start with a $350 bench fee that credits the same way. Not repairable? We tell you first and offer a tested exchange unit with the bench fee credited.
We fix Cat C12 ECMs every day. 2KS and MBL 70-pin modules are 3 to 5 days on the bench right now; 1YN and 9NS 40-pin modules run 15 to 30 days. Plus 1-3 days return shipping.
Yes. Send the engine serial with the unit and it ships back programmed and bench-tested.
Often the hardware is shared, but the personality and parameters differ. If you are considering a swap, ask first; we can program a compatible module to your engine.
Related: Cat 70-pin ECM problems & symptoms · 3406E ECM repair · C15 ECM repair · C10 ECM repair · C13 ECM repair · C16 ECM repair · C7 ECM repair · 3126 ECM repair
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