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

[koalar]

Here's the test being preformed

Just a brief repeated taps as the fuel pump primes

Leave the brown and red, the other two wires

 

[RDM1]

Yeah the radio is aftermarket, we disconnected it and nothing changed at all want me to pull it out?

 

[koalar]

Yeah the radio is aftermarket, we disconnected it and nothing changed at all want me to pull it out?

Anything not need lead disconnect until it's fixed

 

[RDM1]

Gonna try your test koalar but this is the video of the coil pack in action and no spark

 

[RDM1]

Forgot to mention radio was pulled out and tried cranking I'm getting nothing still

 

[koalar]

Gonna try your test koalar but this is the video of the coil pack in action and no spark

Yep that's not going to work

Just tap the test light on battery negative quickly

While the pumps priming

 

[RDM1]

Negative to signal on the coil while priming?
Led or tester?

 

[koalar]

Negative to signal on the coil while priming?
Led or tester?

Tester

 

[RDM1]

So i tried about 6 times priming while very quickly tapping with the tester on the negative while back probing the coil managed to get one and only spark

 

[koalar]

Great

So we have one working coil

Can we get a spark out of the other

You have to be quick like brushing across a pin

I want to test the coil is able to produce a spark, there was a common problem with them on the Punto but we don't see any nowerdays

 

[RDM1]

Tried about 10 times and tried on both plugs aswell couldn't get a spark gonna try swapping the coil plugs maybe it's line is deficient

 

[RDM1]

I think i still have my old coil pack gonna try putting it back in see if the issue is fixed because i tried a couple times again and it didn't give a spark at all

 

[RDM1]

Tried the old coil pack that was intermittently stopping when i got the car and still couldn't get a spark

 

[RDM1]

Is it possible now that the ECU is faulty?

 

[koalar]

Is it possible now that the ECU is faulty?

It's possible

The fact it worked, then didn't, then did for a short while makes it less likely than wiring

Dry joint inside would be one cause

Tried my coil pack, it's not a good test on these waste sparks coils

Still need to check the resistance of the CANBUS network

 

[RDM1]

Ok and where is this canbus locations?

 

[RDM1]

One more thing does the coil pack uses the engine to take the ground? Or is it simply supplied by both wires only?

 

[koalar]

Positive to the + terminal permanent while the engine is turning

Negative to the - terminal switched via the ECU

There's no other connections it's just a metal cage

You can see this with an ordinary test light, disconnect both coil leads and probe the signal side of one connector with the other end on battery positive, worth a quick check incase one coil is stopping the whole system

 

[RDM1]

Like that you mean?

 

[koalar]

Like that you mean?

If that's the ECU side of the plug yes

I'd be very surprised if it disappeared anything as the injectors aren't firing