KR500 new loom quiz

[anthonym]

which bits are for what? I know some but not all.

 

[anthonym]

My purpose here is to check all the connects are the same before crippling the car. I am suspicious one or more are different.

Anthony

[revilla]

I think you're all sorted now aren't you?

[rj]

Very difficult to see the connectors in detail in that image. Shouldn't be very difficult though.

 

[anthonym]

What's this for? I don't have anything I can find like it. This loom has an MBE connector and I have an Emerald, so wonder if it is related to that. Or not. 

I'll list the answers as I have them, below: (next message)

[anthonym]

where does the Black Econseal C177 plug in to? I missed that one.

[rj]

The green plug is for the barometric air pressure sensor. A little "box"  that's som3.5x8x1.5cm - have one at home so can take a picture if you need.

If I were you I'd start laying up the loom on the top of the old without taking anything off. You'll soon get it.

 

[rj]

13 are for the injectors; 11 for the crank position sensor and 16 is for the throttle pot. The brown (5a) will be for one of the water temp sensors at the water rail. Try the brown one :-p 6a is for the lambda sensor.

I am almost certain that 17 and 18 are for the alternator and then 19 will go to the oil pressure sensor.

My initial guess is that 15 is the air temp sensor - don't know the colour on an R500 - mine is off an EU3 and is green. It goes in the air filter backplate.

Grey plug (14)  attaches to the main loom

2 & 5b are for the mfru.

[Ian Mackenzie]

Here is the wiring for your loom, it can be found here: https://www.lotus7.club/sites/default/files/images/Docs/Guides/73414%20Engine%20Harness%20K-seriesR3_4_5.pdf

 

Cheers

Ian

 

[Ian Mackenzie]

Just had a further look, here is what I have. But it comes with a health warning - some are not absolutes, but they can be easily confirmed with a test meter back to the ECU pin out using the above diagram. 

1 = ecu

2 = mfru

3 = to the purple +12V feed on the main loom?

5a = ECU Temp

4 & 6b = look like earths from the wiring diagram I have

6a = Lambda

7&9 = look like oil and water temp for the STACK

10 = Could be the fan relay control – if so it should go to pin 33 on ECU plug

11 = Crank sensor

12 = Coil

14 = Loom plug (Grey)

15 = Manifold Air Temp Sender

17 = Alternator

18 = Alternator

19 = Oil pressure (STACK Sensor)

58 = mfru

13 Injectors (last on the line should be No1)

16 = TPS

[anthonym]

@rj you mentioned EU3 has a green air temp sensor, which my car has, but it's EU2. This new loom has a white I think is for the air temp. I gather an EU2 MFRU works with an EU3 car but not vice versa. I'm perplexed by the permutations of that info. Far as I know (I use that word loosely) my car is EU2

EDIT: change 5a on car: KB to GO

THE ASTERISK MEANS the colours of the wires in my loom are different, which assumes I have identified the right connector.

here's where I am up to:

The C numbers are from revilla's nonVVC png diagram

1 C159 MBE connector Black

2 C154 to MFRU

3 12v *BS Brown/White BW male spade connects to female spade on the (famous) Purple wire, which supplies 12 volts.

4 C183 B+ from Alternator, connect to battery positive (remote post). Clearly one solid thick cable.

5a C169 *KB/KG Coolant sensor, Green/Orange GO (not KB) Black B located in coolant hose to rear left of engine, next to “fan switch”.

5b C157 to MFRU

6a C164 Lamda sensor connect to “sub-loom” (has six connects but only four are used).

6b C151 to battery negative terminal (Not Bulkhead) (this is clearly a binding of several (black) wires.

7 Oil temp sensor Green/Yellow GY Black B at bottom of dry sump housing/tower.

8

9 C187 Fan temp “switch”, located next to the 5a coolant sensor.

10 C179 NR to Solenoid Brown/Red NR on starter (or the “starter relay mod”.)

11 C168 WU/UP White/Blue Blue/Purple I THINK this is the flywheel  (Crank) sensor connect, but mine has a different wire pair that look home made, and I have a redundant connector with only a white to it, suggesting something happened to the black and it was replaced entirely).

12 C156 NK/WB Coil.  Brown/Pink NK  and White/Black WB

13 C521/2/3/4 Injector sub-loom.

14 C162 THE “Grey connector” that connects this the engine loom to the Main loom.

15 C174 *KB/GB Air Temp sensor Green G Black B.  Located on the back of the throttle body plate, in the centre.

16 C175  *YG YP KB Throttle position sensor 1=Yellow/White YW Y 2=Yellow Y 3=Black B . 17 C183 N B+ to the Alternator Brown N.

18 C185 NY D+ to the Alternator Brown/Yellow NY - terminates at Ignition fused/with warning light.

19 C187  Oil pressure sender, remote or not, mine is remote. I think. Brown/White and Black - Note the BROWN/WHITE is doubled being TWO Brown/White wires terminated as one. The wiring diagram shows these two wires terminate one to the Grey Plug on Pin 8 and the other to ECU Pin 27

 NOT PRESENT?

C177 Stepper motor

C152 Charcoal canister purge valve

[anthonym]

Ian thanks, I haven't compared your list yet, but you have identified Stack bits which I was thinking were ECU sensors. 

 

edit: @jk wondering if this editor allows us to use tables..

[anthonym]

@rj, yes please for pic of the barometric box. I am wondering if the pressure sensor is built in to the Emerald K6 (pretty sure K6) and that's why I can't find it.

[anthonym]

just a little heads up for anyone like me looking at the colour coding on the actual wires, some of the colours are invisible or different unless viewed with a bright white light, like a good torch. I guess daylight should work, but I haven't tried that. anthony 

[anthonym]

[EEK]

Barometric is built into the emerald as internal sensor, you must be using it otherwise it would run like a pig over all the high passes.

http://www.emeraldm3d.com/k6-ecu-info-and-specification

[anthonym]

Yes exactly what I was thinking.. I am curious where the box would be and if it's still present, 'cos I can't see anything. 

.. it's nice to be doing this on the sofa! 

[Ian Mackenzie]

I've seen them on the scuttle before, normally similar to: https://shop.euroimpex.lt/en/dalis/17732/air-pressure-map-sensor-manifold-boost 

[7 wonders of the world]

M3DK K3 and early K6 Emeralds ran these an option wire to pin 34, the pre wired loom has the wires twisted into a mini sub loom ready for use.

Best to drop Karl a message with your ECU serial number and he will tell you.

[Jonathan Kay]

@jk wondering if this editor allows us to use tables.

Table creation tool:

Trying that:

1	those that belong to the Emperor
2	embalmed ones
3	those that are trained
4	suckling pigs
5	mermaids
6	fabulous ones
7	stray dogs
8	those included in the present classification
9	those that tremble as if they were mad
10	innumerable ones
11	those drawn with a very fine camelhair brush
12	others
13	those that have just broken a flower vase
14	those that from a long way off look like flies

 

That seems to work. I haven't experimented with editing an existing table.

Jonathan

[anthonym]

 

hmmm.. not really very useful because we can't copy and paste data in to it edited to add "en mass", far as I can find, looks like we are expected to be entering data in to each table box, I think - and pasting table type data (like form excel shown further below) creates a bit of a mess. How did you populate your test table?

test content deleted

BUT the image cannot be zoomed to make it readable; so export it and load and zoom that, only to find the image has lost its resolution so is all fuzzy.

[Jonathan Kay]

I pasted text into each cell. i don't know if there's a way of importing tabulated text.

For your purposes I'd consider:

1. Managing the table in whatever you like
2. Exporting it as a PDF
3. Uploading that to the forum.

Jonathan

[anthonym]

yes I just did that, that image above.. I'll delete that test message shortly, think it's a bit messy for the thread. thanks

[rj]

Anthony,

Your car came with a 967 not a 9Awhetever - you can see the pin configuration in the PDF I sent yesterday

[anthonym]

For posterity I am recording here my thanks to RevillA who travelled to Switzerland and fitted my new loom, including changing the ECU plug to the Emerlald K6 which alone is no mean feat. On top of this the Alpine Winter was fast approaching and it was C O L D in my unheated garage.

Thanks.

Anthony