Centre Room/Dome Lamp Dimmer not working??

[ABS]

Hi guys, today I was in the process of installing a map lamp for the front so I got the roof lining off (pain in the ass) and cut a hole to fit the lamp...anyway I needed to bridge the front map lamp wiring with the centre one for power it up.

I used a test meter to confirm which wire was positive and negative and then tested it before soldering. It worked, so I went on to solder it. After soldering, it didn't work and the dimmer function of the existing centre lamp didn't work.

Now I am stumped as to why the dimmer function has failed and how to fix it. I was told my Jeffaz that there is a special relay for fade in/out when doors shut etc. But where?

Any CH owners experienced this before or more importantly do you guys know any possible solutions??

Any help would be really appreciated. Thanks.

 

[ABS]

Re: Centre Room Lamp Dimmer not working??

Some pictures...

 

[ABS]

Re: Centre Room Lamp Dimmer not working??

I double checked the fuses and no. 18 (room lamp according to handbook) on the interior fuse box is empty but you cant put a fuse in there because some piece of plastic is blocking it. The thing is, even without this fuse the door light was working. Can anyone with a CH please post a pic of their interior fuse area?

 

[ABS]

Need not to worry. After hours of research online, I came to the conclusion that the Body Control Module or ETACS ECU (in Mitsubishis) was the cause. This basically controls all the interior electronic components such as timings, dimming, hazard lights...etc.

The ETACS ECU on mine was functioning well except the room lamp 'door' dimmer (controlled by capacitors/transistors which could've fried) function. This was probably due to the fact that I didn't disconnect the room lamp wiring from the junction box during soldering nor the battery terminals, although the wiring to the lamp was disconnected. -_-

Anyhow a $10 front map lamp job turned into a $110 job as I went on to replace the ETACS ECU, which prior to this I had no clue about having come from an older Lancer.

Next on the agenda is to play around with the old ETACS to see which component has fried.