fray-bentos-uk

I've got a DEEP ECU for my silver top zetec for fitting to my MK3 escort, but can't find a pin out wiring diagram for it, even googling it. Anyone help?

big_wasa

Should be the same as the desk . One had a few extras like cruse control and the fuel computer. I can't remember which one.


Mondeo DESK ecu.


1 Battery 12v
2
3 Speed Sensor
4 Tacho
5
6
7 ECT Sensor
8 Fuel Pump Relay
9 MAF
10
11 Emission Canister Purge
12
13 Engine Coolant Fan Relay 1
14 Pulsed Secondary Air Injection
15 Engine Coolant fan Relay 2
16 Earth
17 Data Link
18 Engine Diagnostic Connector
19 Engine Diagnostic Connector
20 Current Return
21 Idle Control Valve
22 Fuel Pump Relay
23
24 Camshaft Position
25 IAT Sensor
26 TPS
27 EGR
28 PAS
29
30
31 Engine Coolant Fan Relay 3
32
33 EGR
34 Digital Multifunction Display
35 Injector 4
36
37 Engine Control Relay
38
39 Injector 3
40 Earth
41
42 Octane Coding Plug
43
44 O2 sensor
45
46 Sensor Common
47 TPS
48 Data Link
49
50 MAF
51 Injector 1
52 Injector 2
53
54
55 Crank Position Sensor
56 Crank Position Sensor
57 Engine Control Relay
58 Ignition Coil 1&4
59 Ignition Coil 2&3
60 Earth

fray-bentos-uk

Thanks for that big wasa, can't say I understand all of the wiring, like 3 fan relays, and what is an Engine Control Relay?

jsa

What's the hardware code on DEEP VS DESK?

fray-bentos-uk

Do you mean the code number on the box, its 93BB-12A650-EF on the DEEP, and the same on the DESK apart from ending ED

jsa

Something like SMD-487 or MLE-100.

big_wasa

Engine control relay, the ignition switch doesn't power up the ecu. A relay does. The ecu lets the relay power it up if the alarm unit says it's ok. Ie anti hot wire.

You don't really need it.

Fan relays, on some models there is a two stage fan and an extra fan for the Ac. The ecu controlled the Ac.

If you use an external fan switch then you don't need the above either.

I havnt just pulled this of the net. I pulled a loom to bits and traced it all out. I've done all sorts from the basic 2.0 pre pats 1993 Mondeo to the 2004 a Focus St170 and now the Focus Rs. I also have the st220 to look at.

big_wasa

I've played with lots of these and not heard of that before. Can you tell me more ?

fray-bentos-uk

its got SME-101 on it if thats what you mean.

jsa

Yeah thats it.

The hardware code is for the layout/design of the electronics. The code is on the white printed label stuck to the connector.

fray-bentos-uk

so would you agree with the layout being as of a DESK? And #20 current return, is that earth?

big_wasa

Think so check the colour is like the other earths. There is a seperate one with a differant colour trace.

jsa

20, 40 & 60 are all grounds.

What's the hardware code on desk.

big_wasa

No idea, must be 10 years since I played with it.

fray-bentos-uk

My Deep ECU has now arrived, but with no wiring plug (socket?), so I've got to adapt the old socket (TELL PATS) which I think I can do with all the much appreciated help on here. But can these pins with wires easily be pulled out and refitted to holes where previously there was no pin. Is it just a case of giving them a tug?

jsa

Bit of a rough vdeo but you'll get the idea.

http://www.google.com.au/url?sa=t&so...6j7qOrvX1yRTWA

fray-bentos-uk

He was no David Bailey, but he's right, its pretty easy really. Now lets find where all those wires go.

big_wasa

Yeah it's easy to move the pins

fray-bentos-uk

Ok, all going well, most wires now sorted. Can anyone confirm that the 4 injectors have a ignition switched + ve supply, and the ECU supply's the earth when required, or is it the other way around. Also does a 4 wire lamba have a permanent supply on the violet wire. Thanks.

big_wasa

The ecu switches the earth so yes switched 12v to the injectors, coil ect and the ecu fires them by earthing them.

The O2 also wants a switched live. This is for the heater and not the sensor.

jsa

Tripped over this while looking for something else.

http://www.fiestaturbo.com/forums/pi...3145/#p1800474

fray-bentos-uk

Ok, nearly there, but what is this speed sensor thing?

jsa

Sensor for vehicle speed. Goes inline with the speedo cable on some fords.

fray-bentos-uk

Can I live without this as I have a mechanical drive speedo

jsa

VSS is electro mechanical.

Goes in place of speedo cable then speedo cable goes into VSS.

You can live without it. EEC may give trouble code for faulty VSS unless disabled in EEC software.

fray-bentos-uk

I'm all wired up now, but the engine is not firing, so I've decided to wire in the OBD connector to see what faults it gives. So the question is, how does the 16 pin connector wire in with a DEEP ECU.

jsa

https://en.m.wikipedia.org/wiki/On-board_diagnostics

Pins 3 and 11

fray-bentos-uk

Thanks for that jsa, so its ECU pin 18 to OBD pin 3, and ECU pin 19 to OBD 11. And I under stand OBD pin 4 is earth, and OBD pin 16 is permanent 12V supply. That's four wires sorted, how many more need connecting?

jsa

If the tool you are using needs 12V from the OBD port, then yes, 4 & 5 are ground, and 16 is +12V.

'93 era EEC won't support anything more than DCL.