Technical Panda 1200 4x4 2005 won't rev up

[Demolhirr]

Hello

I have an issue with my 2005 Panda 1200 60hp 4x4, the car won't rev up anymore, it just idles.

Ath first I changes the throttle body (new) because when I press the throttle pedal I Can hear the idle control in the engine bay. It didn't solved thé problem.

After that I changes the throttle pedal for a new one. Nothing changes.

Thé diag says :
P0638 : throttle actuator control range / performance
P1121 ?
P1122 ?
P1220 ?
P1684 ?
P1686 ?
P1687 ?

I've had a look AT thé ECU connectors but there is no oxydation on thème.

Could you please help me with this ?

 

[koalar]

Are you 100% sure the throttle body is the correct one

The 4x4 one normally unique and almost impossible to get hold of

 

[koalar]

P1121-62 THROTTLE POSITION SENSOR 1/2 CORRELATION

P1220-62 ACCELERATOR PEDAL POSITION SENSOR 1/2 CORRELATION

P0638-11 ELECTRONIC THROTTLE CONTROL MOTOR CIRCUIT LOW

P0638-12 ELECTRONIC THROTTLE CONTROL MOTOR CIRCUIT HIGH

P0638-13 ELECTRONIC THROTTLE CONTROL MOTOR CIRCUIT OPEN - BANK 1

P0638-61 ELECTRONIC THROTTLE CONTROL MOTOR PERFORMANCE

P1684-94 ETC MOTOR SELF-LEARNING (UNEXPECTED OPERATION)

P1687-94 ETC MOTOR SELF-LEARNING (STOP UNEXPECTED OPERATION)

 

[Demolhirr]

Are you 100% sure the throttle body is the correct one

The 4x4 one normally unique and almost impossible to get hold of

I ordered one that was note compatible, After that I ordered a Kamoka

Throttle body Kamoka

It looks exactly the samedi and thé connectors is compatible.

 

[Demolhirr]

Many thx for thé error codes interprétations !

 

[koalar]

I take it's a manual not a dualogic

P0638

Is the code I would go after first, it's saying there is an electrical issue between the ECU and throttle body

 

[Demolhirr]

I take it's a manual not a dualogic

P0638

Is the code I would go after first, it's saying there is an electrical issue between the ECU and throttle body

Yes it's a manual gearbox.

 

[koalar]

77365316 is the throttle body

Going back and checking if the replacement is compatible

Back shortly

 

[koalar]

Looks compatible to me

So we need to do some basic checks


Have to find the right circuit diagram

Back shortly

 

[Demolhirr]

Kamoka listed thé ref 77365316 on their website for this part.

Is there a learning procédure or a reset to do once thé new part is installed ?

 

[koalar]

Kamoka listed thé ref 77365316 on their website for this part.

Is there a learning procédure or a reset to do once thé new part is installed ?

Yes

But there is a hard fault detected in the power or ground going to the throttle body


There is a warning in bold in the 500 workshop manual to test the battery first with any P0638 error codes

Yes I know Belgium isn't particularly hot or cold


NOTE: Low battery voltage can also cause excessive current draw, in very
hot and very cold ambient temperatures. Make sure the battery can pass a load test before continuing.

So it's an obvious start and we might as well get it out of the way first

Test the battery voltage while cranking

Look at the dash, do the oil and battery warning lights behave correctly, ignition on ,both on, and only go out after the car is started

 

[Demolhirr]

Thé battery was old and when I didn't drive thé car for some time I had to jump start it. I installed a new Varta battery and I mesured thé alternator at about 14V. I've also bought a new alternator because I plan to do a road trip to Sardinia in septembre but I still need to install it on thé car.

 

[koalar]

I can't find the wiring diagrams for the early 4x4 or dualogic which use the same throttle body

Annoyingly some of the wiring in the the 4x4 although identical use different colours

Here's a generic pre 2006 powered throttle LHD

Does the wires match

If not post a photo of the cable colour and I will see if I can find a match

 

[Demolhirr]

Thanks, I'll look at that tomorrow and take a picture, thé car IS in my parents garage.

 

[Demolhirr]

I can't find the wiring diagrams for the early 4x4 or dualogic which use the same throttle body

Annoyingly some of the wiring in the the 4x4 although identical use different colours

Here's a generic pre 2006 powered throttle LHD

Does the wires match

If not post a photo of the cable colour and I will see if I can find a match


Hello Koalar,

I've had a look at the cables : they are exactly the same color as on your image.

Do you have a procedure to test or recalibrate it ?

Many thx for your help !

 

[koalar]

Calibration is only through software

Should be the same test procedure as the fiat 500, got it written down somewhere

I will dig it out shortly

 

[Demolhirr]

Calibration is only through software

Should be the same test procedure as the fiat 500, got it written down somewhere

I will dig it out shortly

I've made some testing :

TPS is working because when i move the throttle body by hand I see the TPS values changing on the graph. (TPS is integrated to the throttle body).

I've also tested the voltage between the connections 3 and 4 from your scheme with my multimeter : 0 V

When I unplugged the connector on the throttle body, I've seen that there is a white grease on the connections (the same as they put on the battery connections). That makes me think that the previous owner might have had the same issue. Sadly, I bought the car from a professionnal reseller and I don't have the contact informations from the previous owner.

Do you think that the ECU might be the cause ? I've looked at its connections but there is no rust or moisture.

 

[koalar]

Sorry for the delay had an very early start yesterday

Here's the procedure for the 500 ETC (electronic throttle control)

I don't have a workshop manual for the panda but it should be close enough

 

[koalar]

I start by clearing the codes

Switch the ignition off

Disconnect the throttle connector

Put a fine pin in P3 and measure between here and battery negative post, while turning the ignition on

Then the same on pin 4

 

[Demolhirr]

I did all thé tests from your document apparently, there is an issue with thé ECU.