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BrianGlenn · 10-16-2019, 09:38 AM

I have the "no headlight" issue that some have experienced. 2007 Allure 470 Sunset Bay with VIP Smartwheel SM211. I have the VIP troubleshooting document and have located all the components in the coach.

So far I have confirmed good fuses and good bulbs. Now I am digging into the turn signal switch as a culprit (wear part). The headlight circuit travels through this switch.

Question - Can anyone confirm the part number of the turn signal switch as a Douglas Autotec TM012? My google search shows this may be unit.

I will pull the old one before I order - just wanted to get a head start.

Any comments from others who have done this repair are appreciated. Your trouble shooting input is always appreciated.

Brian

Ssgritton · 10-16-2019, 01:51 PM

When this happened to me I replaced the board behind the brake pedal panel, then my lights went out again and I unplugged the board and reseated them and the headlights came back on. have you tried that?

this was a 2005 allure

BrianGlenn · 10-16-2019, 06:31 PM

Quote:

Originally Posted by Ssgritton

When this happened to me I replaced the board behind the brake pedal panel, then my lights went out again and I unplugged the board and reseated them and the headlights came back on. have you tried that?

this was a 2005 allure

I am pretty lazy troubleshooter - removing and replacing all connectors is the first thing I usually do.... For me cycling the connectors did not solve my problem.

Ssgritton · 10-16-2019, 08:45 PM

ok throwing out some ideas, one time I had a problem when I would pull on the high beam switch, might try hitting that if you have not already done so.

BrianGlenn · 10-16-2019, 09:10 PM

Update.

Symptoms - no headlights yet. High beam indication is "on" on dash lights, no headlights. Also no Daytime Running lights when put into drive with service brake released (motorhome has DRL module hamsar H8015b - adds confusion as to how it is wired into headlight circuit).

Trouble shooting today - had wiring list for CC and found wire labels 196 from switch to smart wheel module, headlight on from smart wheel module to relay, relay to dimmer switch (in turn signal assembly) and wire label 59 to low beam and label 58 to high beam.

Confirmed turn signal assembly is Douglas Autotech TM012.

Interestingly - when checking voltage at integrated dimmer/turn signal switch - running voltage at both high and low beam terminals (58/59) - cycling dimmer switch did not change voltage at either low or high beam terminals - had running voltage 13.5V. Disconnected connector and checked continuity on dimmer switch - continuity correctly cycled from low beam terminal (59) to high beam (58) with cycling dimmer switch - it appears to be operating properly.

Reconnected harness to turn signal/dimmer switch in column and disconnected headlights at bulbs - high beam indication in dash lights goes out and all appears to work correctly - I can cycle high/low beam and dash light indicates high beam cycles correctly. Once I reconnect head light bulbs it "shorts" and no ability to cycle high/low beam according to dash indication. And no low or high beam headlights - and no DRL.

Tommorow I will buy a couple of new 9007 HID bulbs and try that - hard to imagine both bulbs are NFG. No wiring harness issues - wear or pinching.

Saga continues.

PS - I have yet to put the VIP SM211 into diagnostics mode and check but it seems to be working on all other functions - so hard to believe it is NFG. Will do that in the next couple of days.... sigh - work gets in the way....

Brian

Rsponsford · 10-20-2019, 12:09 AM

Quote:

Originally Posted by Ssgritton

ok throwing out some ideas, one time I had a problem when I would pull on the high beam switch, might try hitting that if you have not already done so.

Same thing happened to me. Check the high beam switch.

BrianGlenn · 10-21-2019, 01:56 PM

Update. Ground connection at FC2 connector. Connects headlight harness to Chassis Dash harness - located behind inspection panel front of driver behind generator slide. It is right beside steering box and is exposed to road spray.

CC taped it well with electrical tape but was dirty and not making contact on headlight ground back to chassis. Cleaned up and electrical contact grease added, resealed. All good.

Smart wheel control module tested good with diagnostics mode. High beam/signal flasher tested good with headlight harness disconnected from column.

Ps it is a Douglas Autotec TM012 flasher.