CM7200, 2004 Ford F-350 Diesel

I had a CM7200 installed in my 2004 F350 Powerstroke Diesel. First we tried voltage sensing only, no luck. Next we tried the factory tach wire provided, no luck. The truck would start for 20 seconds and shut off 3 times until it would give an error. Next I installed a DEI signal generator, it worked a few times after install until the next morning when the truck didn't start and now it is back to running for 20 seconds and shutting off 3 times until it gives an error.

Any advice? I currently have all 3 DEI wires hooked up and it is providing 1.5 volts ac to the brains tach input. I have tried all 3 wires separately and it still does not work.

After the truck is started, if you apply throttle the volts raise to over 2.5 volts ac and the remote start remains activated. Can I simply add a 1 volt ac amplifier?

Does it fail the tach learning process?
Does it have anti-grind start feature? If so - you can use 3 second assume start feature.

No it does not fail.
I am pretty sure it does not have anti grind.

The truck only starts and shuts off after 20 secs on a cold start. If you apply throttle or the truck has been driven around and is warm, it will activate properly. I have tried relearning it on cold starts and warm starts.

So if you start it manually, it keeps running?

Negative, here are the situations:

Cold start w/o applying throttle after startup: starts and shuts off after 20 seconds, attempts to start 3 times then sends signal to remote w/ error code

Cold start w/ applying throttle after startup: remains running and sends signal to remote that the start was successful

Hot start: starts as normal, no throttle required

So I must be missing something here because I don't understand why you think this has anything to do with the R/S (tach signal or otherwise).

This is with activating the remote start.. the brain is not getting the required volts from the signal generator to actually know if the engine is started.

I adjusted the signal generator and switched wires. It is outputting about 2.7 volts ac now. Relearned the tach and still when you remote start it, it will run for 20 secs and shut off unless throttle is applied.

arayray94, it looks like there was some confusion - when they asked - Does it keep running when you start it manually (as in with the key, not the remote start). When you said it does the same thing manually, that led to conclusion that it was not remote start related at all. Now that you've clarified that maybe someone will reply with a possible solution to your problem..

The CM7200 spec says it should work with a 1.5 to 4v tach signal.
Did you measure the voltage when you did the tach learn process?
What is the voltage when it shuts down?

What are you using to make these measurements?

Voltage measured after adjusting the signal generator is just under 3 volts. It shows 0 volts when the engine is off. When I do the tach learn, I hold the brake pedal, hold the remote start button and it flashes twice then whenever I let off the brake it flashes again. Compustar said this is giving an error that tach learn is not enabled. Is this correct? Because why would it not start on cold start but have no issues starting on a warm start? I think it would just not be able to start all the time.

The two flashes indicate the Tach signal was not learned. The last flash ( assuming a single flash )
indicates that programming option Group 2, Feature 10 is not set at Option 1. Option 1 is Tach Mode.
Can you verify which Option is selected for Group 2 - 10?

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Soldering is fun!

Last flash is a single flash correct. I do not, I have to take it back to my installer to try and reprogram it.

Here is a link to the complete CM7200-s manual :
https://www.the12volt.com/installbay/file.asp?ID=1399

See Page 15 for more Tach Learn info.

If your installer has the OP-500, it should be real easy to check and
change options.

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Soldering is fun!

They do, just want to get it fixed once and for all. This will by my third time taking it back to get fixed. I tried changing the option following the steps on page 49 without any luck. I will try again tomorrow.

Which wire is horn input on the CM7200? Also if I remote start the truck and cancel it, the radio stays playing until a door is opened. How do I get that to stop?

You have new questions but I don't see any follow up on resolving your tach learn problem.

It was fixed. The installer did not switch it over to look for tach signal.

arayray94 wrote:

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Which wire is horn input on the CM7200? Also if I remote start the truck and cancel it, the radio stays playing until a door is opened. How do I get that to stop?

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Horn Input? The CM7200-s does not support the Horn Input function like the older models did.
If you are looking for Horn Output, you would need to get into Special Option Group 2 and assign Horn to an unused POC.

The trucks Retained Accessory Power function should shutdown itself after 10 or 30 minutes. If you need it quicker, try connecting the CM7200-s Rearm wire to a Door Trigger and set Menu 1 Feature 5 accordingly.
Door Trigger (-) : W/Out OEM Keyless: Driver Front GREEN/YELLOW
            W/OEM Keyless: Driver Front YELLOW/BLACK

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Soldering is fun!

Awesome info on the rearming. For the horn, it is programmed to activate the horn when the lock is hit twice. The programmer never hooked it up to actually activate the horn however.

At its' factory Default settings, the CM7200-s does not supply a Horn Output signal on any of
its' CN-5 wires. Even though the Horn output function has been set to the desired option in
Menu 3 - 08, unless a Special Option Group 2 POC wire function was changed to Horn, there
would still no (-)Horn Ouput wire to connect to the trucks Horn wire. This group and its'
options are another OP-500 only area. If you believe that the installer made this change and
you know the Menu 3-8 setting, you could connect your DMM to the unused POC's ( 1 - 8 )
one at a time and check to see which one responds with correct Horn outputs. Then connect
that POC wire to the trucks horn.

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Soldering is fun!

I know 3-8 was set to double lock only, however POC #2 (horn) in the special options was set to activate high idle via a relay when the trunk button is clicked. POC 2 is either horn output or aux 1?

Very interesting. All the info I have on the CM7200-s leads me to believe that the eight POC
outputs have the following default output setting.

Pin 1 Blue/white - [POC 1]   GWA
Pin 3 White - [POC 2] AUX1
Pin 5 Blue/Black - [POC 3] Lock
Pin 7 Blue - [POC 4] Unlock
Pin 9 Orange/White - [POC 5] Factory Alarm Disarm (FAD)
Pin 11 Orange - [POC 6] Factory Alarm Arm (FAA)
Pin 13 Violet/White - [POC 7] Trunk release
Pin 15 Black - [POC 8] Status/Ground while running (GWR)

Additionally, each POC output wire has this note at the end of the default description :
Note: There are 28 additional POC setting options for this POC. These are listed below :

2nd Light - [1]
2nd Start - [2]
2nd IG1 - [3]
2nd Acc - [4]
Status Out - [5]
Rearm Out - [6]
Disarm Out - [7]
Horn Out - [8]
Dome Light - [9]
Aux 1 Out - [10]
Aux 2 Out - [11]
Aux 3 - [12]
Aux 4 Out - [13]
Aux 5 Out - [14]
Aux 6 Out - [15]
Aux 7 Out – [16]
Defrost - [17]
GWA - [18]
Status 2 For Manual Trans. - [19]
Siren 2 - [20]
Defrost 2 - [21]
VAC - [22]
PTS Button - [23]
Aux 3 (EZGO Unlock) - [24]
Lock - [25]
Unlock - [26]
2nd Unlock (Driver’s Priority) - [27]
Trunk Release - [28]

Considering the needs of your truck, my first instinct would be to re-assign POC 7
from Trunk Release to Option 8, making it the Horn (-) output wire.

From your description, the White POC2 output wire is still set at AUX1. AUX1 is triggered
by a short press of the Trunk Release Button. ( If you held the Trunk Release button for
2.5 seconds, the CM7200-s would output a Trunk Release signal on the CN-5 Violet/White
wire. ) To support the High Idle solenoid, Feature 4-01 is set to Option 2 - Latch, Feature
4-04 is set to Option 1, Feature 4-05 is set to Option 2 - OFF.

I guess you could check the unused POC's to see if any would output a (-) 1/3 second signal
the second time the Lock button was pressed. You should do an Unlock between tests to
reset the Horn output. Remember that Rearm will also have an output with every Lock
command and the (-) Parking Light output would flash/output with every Lock command.
Much easier with the OP-500.

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Soldering is fun!