t5 interior lights not working

[MARK68]

hi can anybody help still have no lights bulbs fine all fuses checked and fine but stuck now any suggestions welcome.... please email me bettinson@blueyonder.co.uk.

[kenney]

What type of vehicle and what year?

[MARK68]

thanks for the reply the van is a transporter 04 plate or 2004 t 28 1900cc
it would be great if some one could point me in the right direction as it's a *** not having lights in the dark.... many thanks to all that helps regards mark...

[kenney]

The light is controlled through the onboard supply control unit,so the first thing you need to check is if the light has power,remove the lamp and check if you have power on the red on black wire

[MARK68]

Hi no power to the lights which is the supply unit the one under dash or under seat.

thanks for help..

[kenney]

It is the one under the dash,be sure the fuses are ok

[MARK68]

i have checked fuses fine must be power supply box under dash

[slarge]

Mark,
did you ever find the cause of this fault? My 2007 T5 has the same problem.

I have seen a report on another van of a poor earth under the floor mat, but haven't looked there yet

[MARK68]

hi yes found the problem your correct in the earth cable under floor mat that isnt the prob as that only earths the heater, there is a power control unit above the throttle approx 6inchesx 6 inches. thats the prob i replaced mine and it was sorted. cost a bit though....i thought i would be clever and buy a new one and stick it in my self i had done that and it was fine threw the old one away until my fuel was s--t i then found out i needed it coded .pity i didnt keep the old one cos they needed the info off it another 50 quid. so the thing is fine now getting 30mpg around town and the light all work.... hope this helps...

[slarge]

Thanks Mark,
how much did it cost for a new control module?

Just thinking whether to bypass that module and wire the lights to a timer relay instead....

Steve