6.7L CM2100?

[Towertech]

Hi, everyone.

I’m in the process of swapping a 6.7L into my 2nd Gen, and I’ve hit a wall with the ECM.

I have a CM2100 (I was told it was good) Firepunk standalone harness.

I have most sensors hooked up to a 12V power supply to the ECM, and I’m trying to connect to it with my V2 with the EFI scan and tune program, but I keep getting no vehicle detected.

Is it because I don’t have the TIPM, and the skin stops it?

And if so, how do I get around it?

Or is my ECM just a boat anchor?

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[Towertech]

No one?

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[Corkey]

I had EFI for a brief moment, but I don't have any info to help out with.

I would contact the current tuner to help see why it does not want to communicate with the ECM.

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[AK Bob]

Hi, everyone.

I’m in the process of swapping a 6.7L into my 2nd Gen, and I’ve hit a wall with the ECM.

I have a CM2100 (I was told it was good) Firepunk standalone harness.

I have most sensors hooked up to a 12V power supply to the ECM, and I’m trying to connect to it with my V2 with the EFI scan and tune program, but I keep getting no vehicle detected.

Is it because I don’t have the TIPM, and the skin stops it?

And if so, how do I get around it?

Or is my ECM just a boat anchor?

The TIPM is the gateway for the ECM.

Are you connecting the V2 directly to the ECM CAN C +/-, and are all the powers and grounds to the ECM connected?

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[Towertech]

Unless they’re in another power or ground I’m missing, everything is connected.

Complete standalone harness C1 & C2.

V2 plugs right into the OBD2 port.

Power and ground on the main leads. 12v to the start/run wire.

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[AK Bob]

Unless they’re in another power or ground I’m missing, everything is connected.

Complete standalone harness C1 & C2.

V2 plugs right into the OBD2 port.


Power and ground on the main leads. 12v to the start/run wire.

Looks like battery voltage on C2 pins 45, 49, 50 & 60 and grounds on C2 pins 47, 48 & 57.

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[Towertech]

Looks like battery voltage on C2 pins 45, 49, 50 & 60 and grounds on C2 pins 47, 48 & 57.

I will double-check this.

Thank you!

I’m starting to think the ECM is junk.

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[Towertech]

All pins have power and ground.

When I try to flash, i keep getting the same error message: ignition switched off pin 45 on C2 has 12v, which is the start/run.

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[AK Bob]

All pins have power and ground.

When I try to flash, i keep getting the same error message: ignition switched off pin 45 on C2 has 12v, which is the start/run.

You can’t communicate with a scan tool either, correct?

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[Towertech]

You can’t communicate with a scan tool either correct?

Correct.

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