Seat Cordoba/Ibiza wiring diagram

kkelly77

Does anyone have a wiring diagram for a 02 Seat Cordoba?

Had a an issue with the backlight of the instrument cluster coming on/flickering even with the ignition off and key out. The TCPS warning light was also very faintly flickering. Had to disconnect the battery so it wouldn't go flat.

Checked all fuses are OK and confirmed there is no parasitic draw. Removed the instrument cluster and headlight switch assembly to check there is no visible issue with the wiring.

After removing both, I noticed the front passenger side parking light was on as well as the rear light on passenger side. Again, no key in ignition and ignition turned off.

I got the following voltages with ignition off & key out:

Green connector (instrument Cluster)
Pin 7 0.13V
Pin 8 0.13V
Pin 10 12V


Black connector (instrument Cluster)
Pin 7 12V


Black connector (Headlight Switch)
Pin 13 12V
Pin 15 12V

A few photos attached. Thanks for the help

shietpilot

Is it a Mk1 or Mk2 Cordoba? Both were made in 2002.

kkelly77

shietpilot wrote: »

Is it a Mk1 or Mk2 Cordoba? Both were made in 2002.

The newer Mk2 model

shietpilot

Pin 15 on the headlight switch is power straight from the battery positive terminal
Pin 13 on the headlight switch is a switched 12V line at the headlight switch which is supposed to turn on when you flick the switch. It runs to the instrument cluster and side lights, tail lights etc.

Either the cable from pin 13 has shorted to a 12V line or the headlight switch is faulty?

kkelly77

shietpilot wrote: »

Pin 15 on the headlight switch is power straight from the battery positive terminal
Pin 13 on the headlight switch is a switched 12V line at the headlight switch which is supposed to turn on when you flick the switch. It runs to the instrument cluster and side lights, tail lights etc.

Either the cable from pin 13 has shorted to a 12V line or the headlight switch is faulty?

I'd have to assume a short, as the passenger side parking lights are on with the headlight switch physically disconnected from the connector.

shietpilot

kkelly77 wrote: »

I'd have to assume a short, as the passenger side parking lights are on with the headlight switch physically disconnected from the connector.

Most likely! Pin 14 on the headlamp switch connector brings 12V to the driver side parking lights. I would assume if it was the headlight switch that both sides would be on.

kkelly77

shietpilot wrote: »

Most likely! Pin 14 on the headlamp switch connector brings 12V to the driver side parking lights. I would assume if it was the headlight switch that both sides would be on.

Any chance you have a PDF for the Pin 13 wiring so I can start tracing it for the fault?

shietpilot

kkelly77 wrote: »

Any chance you have a PDF for the Pin 13 wiring so I can start tracing it for the fault?

There you go buddy: http://dev.povilas.ovh/cordoba_lighting_system.pdf

The light switch is marked S3 on the diagram.

shietpilot

Try to remove Fuse 7 on the diagram and then check the instrument cluster. If the short is between the fuse and the passenger headlight/tail light the instrument cluster will stop lighting when you remove the fuse. If the instrument cluster remains lighting and the parking lights go off then you know the short is between the fuse, cluster or light switch.

kkelly77

shietpilot wrote: »

There you go buddy: http://dev.povilas.ovh/cordoba_lighting_system.pdf

The light switch is marked S3 on the diagram.

Thanks for that Shietpilot.

Time to go look for a good deal on a wire tracer now

kkelly77

So in typical electrical troubleshooting style, nothing went as expected :rolleyes:

With ignition off & key out, I reconnected the instrument panel and the headlight switch, reconnected the battery and the front/rear passenger lights did not come on, which is what was happening yesterday.

However, the original issue of the instrument cluster backlight and TCPS warning light flickering happened again.

I pulled fuse 7 and there was no change. I don't have an owners manual so I can't confirm if all the fuses are correct rating and in the correct position. I've attached a photo of the fuses and fuse card. For example, the 5A fuse in position 16 shouldn't even be there - no heated seats plus the fuse is sitting loose as there is no connection in that position.

I disconnected the headlight assembly and tried just using each instrument cluster terminal one at a time. The backlight flickering has stopped but the warning light is still flickering.

I know if I put everything back together the instrument cluster will probably start flickering again. Must find the source of the problem :mad:

I wonder if the issue is with the instrument cluster itself?

kkelly77

Just to update the thread - The car was back to the local mechanic a couple of times.

The first visit was to replace the instrument cluster but this didn't fix the issue. The second time was to replace the electrical control module. This also didn't fix the issue.

Does anyone have a PDF or some documentation where all the grounding points for this vehicle are? I'd like to check these myself. Thanks.