Technical '06 Panda crank sensor issue.....

[RDM1]

And with ignition on top right 9.6v top left battery voltage bottom left 9.15v and bottom right battery voltage

 

[RDM1]

No and the bottom 2 swapped value with ignition on

Wait there

Are we saying the purple and black aren't all reading the same

 

[koalar]

No and the bottom 2 swapped value with ignition on

Wait no point in going any further

 

[RDM1]

Yeah i stopped because swapping voltage is also illogical to me

 

[RDM1]

But what does that mean now?

 

[RDM1]

Traceback the 3 connected black and purple based on the diagram you sent? Aka possibly a bad joint?

 

[koalar]

Traceback the 3 connected black and purple based on the diagram you sent? Aka possibly a bad joint?

Yes

Either you are measuring it wrong

I have told you wrong

The diagram I am using is wrong

But so far it look to me we have found a problem

All four wires should be identical

 

[RDM1]

Ooook and any idea where the joint might be?

 

[RDM1]

I'm not measuring wrong because i grinded the prob very well against the pins it wouldn't change value

 

[koalar]

Ooook and any idea where the joint might be?

Nope never seen one fail so never been there

It likely to be a solder joint with heat shrink round it

Let's double check,

With the connector disconnected

All four wires should show less than around 1 ohm to the battery negative

 

[RDM1]

Around 370-380 ohms

 

[RDM1]

Hi there cut it open?

 

[koalar]

We don't know if the problem is before the joint

Black and purple cables

At the joint

Or in the black cable

Or the other end of the black cable is connected to the wrong place

We can confirm or eliminate the purple and black wires

By measure between each of the pins at the ECU

And check for continuity

 

[RDM1]

What do you mean? It's a black thick wire to the 4 wires on the ecu and here's the connection in the picture, what do you want me to do now?

 

[RDM1]

Want me to follow the big black cable to wherever it's going to?

 

[koalar]

Check the resistance between all the pins

5 and 6,21,22
6 and 21,:22
21 and 22

They all should be close to zero

If any are not, stop

 

[RDM1]

Very first pins i plugged in

 

[RDM1]

And it's dropping slowly when it reached the 250 it started going down quickly till 160 then started going back up it's very unsteady value

 

[RDM1]

It keeps waving between 360 and 160 no idea why and the battery is disconnected

 

[RDM1]

It's mostly steady now like that flickering a little between the 2 pins without touching anything