Volvo TAMD 73/74 and 75 ECU - Cause for concern?

[petem]

Can you copy and paste the calibration instructions that you are using?

 

[Cruiser4450]

Workshop Manual
Group 30 Electrical system
TAMD72P-A, TAMD73P-A TAMD74C/L/P-A, TAMD74C/L/P-B TAMD75P-A


Calibration
Electronic/Mechanical two lever control

page 45

 

[Norsk]

Did you get it sorted?
Are engines ok now.

 

[Cruiser4450]

Well I cannot get it to accept the calibration of the controls. I have volvo people coming to look at it.

 

[Norsk]

Well I cannot get it to accept the calibration of the controls. I have volvo people coming to look at it.

Do you have any error code? Press diagnostic button and count blink code.

 

[Cruiser4450]

Yes i get 3 different error codes. One is 8.3, 5.2, and one other maybe 1.2, or 1.3

 

[Norsk]

Code. 1.2 is. Neutral gear position is wrong in relalation to potentiometer value.
Check potentiometer.
Code 1.3 is. Angle between trotle opening start and full trottle is too small.
Check potentiometer.
Code. 5.2 is short circut/open circut on cables from neutral identication.
Check cables and connections up to control panel.
If fault remains.
Check. If panel type 1. Change control panel.
If control panel type 2. Change the bulb in neutral button.
Code 8.3. Calibration values can not be stored by control module.
Actions. If fault remains. Change control module.

It looks like you have some error between ecu and controlls.
Try to change New ecu to other working engine, and do the calibration at this engine. If this work, ecu is ok. If same codes and behavor..it is possible ecu is bad.

 

[Cruiser4450]

I hope it isnt bad I just waited two years and paid 4600 dollars. I just put it in last week

 

[Norsk]

I understand your frustation.
Can you test to change ecu to other engine like say in previous?
It it not very complicated...Just ask here if you get into trouble. And send pictures..they speak 1000 words.

 

[Norsk]

Btw..where are you location?

 

[Cruiser4450]

I can swap the ecu’s I replaced this one. During the two year wait i swapped back and forth to run both motors. If my ecu is bad that i just bought i will set the boat on fire and let it sink.

 

[Norsk]

Ok..if that you tell is true.
Your New ecu is bad.
Can you post picure of label on New ecu.

 

[Norsk]

Just do not set your boat on fire yet?

 

[Cruiser4450]

When I get off work I will. But why would my new ECU be bad.

 

[Cruiser4450]

You really are breaking my heart I waited 2 years spent 4600 and the volvo dealer didnt want to work on my boat. I tried bribery and even contacted volvo north america. These engines have broken me from yachting.

 

[Cruiser4450]

Ok I was busy earlier I see swap new one try to calibrate if it doesnt work then my new ECU is bad if it works I have another issue with wiring. Sorry for not waiting until I could focus on your response.

 

[volvopaul]

You will not be able to carry out a lever calibration if you have previous fault codes which in your case it looks like you have , the system has to work before you can enter calibration mode.
silly question have you placed the ignition keys to the full stop position to clear any codes ?

 

[Cruiser4450]

I turn both keys to the far left or the “S” position. When I then energize or turn to the #1 position now both temperature lights flash and the diagnostic button flashes. When I push the diagnostic button it gives me the 8-3 code.

 

[Cruiser4450]

Here is my new UCU

 

[Norsk]

Isn't your engine a TAMD 73.
Here you have pict of ECU to a 75 engine.