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Discussion Starter #1
Hello everyone I'm new here and was hoping someone might be able to help me out. I have 2007 Caliber. I bought it used. The other night someone stopped me and said my tail lights were out. No big deal I thought I'll just change the lamps. Well come to find out the lamps are good but I don't get any voltage to them when I turn on the headlights Has anybody had this issue before? Does anybody know where I might find a wiring diagram? Thanks
 

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Hello Mike

Here's your quick wiring diagram for tail lights and TIPM pinout: dropbox.com/s/3c58s0ymktvnmik/caliber%20tail%20lights.pdf?dl=0

There are no fuse or relay for tail lights all is done in Total Integrated Power Module so most probably your TIPM output for taillights is busted.
TIPM act like automatic fuse that cut power as long a short-circuit is detected and restore power once condition cleared. Therefore if you are lucky you can have a failed light bulb that went on short-circuit and once light-bulb replaced power is restored and will work. Yet if with light bulbs removed you still don't get any voltage to them you are looking at a faulty TIPM.
I've repaired lots of TIPM all you need is to replace the high side switch IC that correspond to taillights output , its $5 Freescale QFN power IC

Good luck
 

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Moc,

I gave you a "thanks" because that was a great answer. Now I hope our original poster shows up for your answer. My last few responses to the forum have been thoughtful and detailed, but the original person asking for help never returned!
 

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Discussion Starter #5
Moc and dbacon,

Right on! thanks for the help. I have been having a problem logging on. But I got an email yesterday and that link got me on! Sweet. I Tried to reset the TIPM by disconnecting the battery and shorting the cables for 10 min. That didn't work and when I connected the battery back I found out I have a after market alarm. I was thinking that might be the problem.
I haven't tried your advise yet but I hope to get to it today. I will be sure to let you guys know what happens.
Thanks again.
 

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Discussion Starter #7
Well I have no power to the tail lights and replacing the "high side switch IC that correspond to taillights output" looks to be outa my league. Soooo looks like I'm replacing the TIPM. I'm still trying to find out if the TIPM does or does not need to be programed by the dealer. Stay tuned.
 

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Yes, Totally Integrated Problem Module is a well deserved nickname for good reason.
Despite of what a stealer may say you don't need to pay him a visit for programing a pre-owned TIPM.
 

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Moc,

Seems a shame he should pay $300 for a TIPM when you could either fix it for him or post a picture of what to replace. I searched and searched but could not find the IC you mentioned, only the manufacturer.
 

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Discussion Starter #10
Moc,

Seems a shame he should pay $300 for a TIPM when you could either fix it for him or post a picture of what to replace. I searched and searched but could not find the IC you mentioned, only the manufacturer.
Haha That's cool thanks. I was just looking for some advise, I don't mind paying a fair price. I just don't want to get ripped off. Dealer said $1200. I found a company on line rebuilt $295 guaranteed and they said if it doesn't fix it I can return it. I'll let you know what happens.
 

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Discussion Starter #12
Well I changed out the TIPM. Easy 15 mins. My tail lights still don't work. Going to have the after market alarm removed.
 

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Oh noooo, that's awful. Sorry to hear that.
Were you able to see that power appeared on the output of the TIPM to the tail lights?
Reference the link in post 3 from Moc.
C3 pin 8 is tail lamps (20Ga wht/vio)
C3 pin 13 is stop lamps (18Ga wht/orn)

Or maybe the signal is mot applied to the input on the TIPM?
Seems like it comes over a lighting signal from the headlamp switch, which I am having trouble finding in the service manual. Looks like one of those circuits where different voltages trigger different systems all over one wire.
 

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Were you able to see that power appeared on the output of the TIPM to the tail lights?
Reference the link in post 3 from Moc.
C3 pin 8 is tail lamps (20Ga wht/vio)
C3 pin 13 is stop lamps (18Ga wht/orn)
"To measure is to know" that's why I've shared the wiring diagram.
As I've said in the first post: if no voltage present at TIPM output then check for short circuit to ground on that output. That is, with battery disconnected, measure its resistance to ground. I've saw wire's sleeves sliced that touched chassis metal along their way.
TIPM can act like automatic fuse and cut power to that output while short-circuit present. Once surge condition cleared it restore normal power output functionality.
Any cheap multi-meter can be used for that, easy 2 mins and no cost.
IF all good with TIPM and voltage present at its output, THEN dismantle the car to check wires interrupted, alarm issue or whatever else is stopping signal reaching tail lights.

Seems like it comes over a lighting signal from the headlamp switch, which I am having trouble finding in the service manual. Looks like one of those circuits where different voltages trigger different systems all over one wire.
No different voltages, headlamp switch is full digital, communication with the instrument cluster is done over one wire LIN bus
 

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Thank you, Moc, for explaining the way the switch works.

No problem dbacon.

Anyway, spreading digital communication to the last simple switch in the car is not always a bright idea yet this is what they do with most cars today
 

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No problem dbacon.

Anyway, spreading digital communication to the last simple switch in the car is not always a bright idea yet this is what they do with most cars today

Well we should invent jumpers for these circuits, we could call them "The ASCII jumper"...
 

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Discussion Starter #18 (Edited)
Looks like my problem was with the aftermarket alarm. Once I got it removed and the wiring back to I hope factory state. Anyway the tail lights work now..I just have to remove the TIPM and send it back. Unless someone out there needs one? Thanks for the advice and help.
 

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Discussion Starter #19 (Edited)
Oh noooo, that's awful. Sorry to hear that.
Were you able to see that power appeared on the output of the TIPM to the tail lights?
Reference the link in post 3 from Moc.
C3 pin 8 is tail lamps (20Ga wht/vio)
C3 pin 13 is stop lamps (18Ga wht/orn)

Or maybe the signal is mot applied to the input on the TIPM?
Seems like it comes over a lighting signal from the headlamp switch, which I am having trouble finding in the service manual. Looks like one of those circuits where different voltages trigger different systems all over one wire.

No, I didn't see anyway to get to that output easily and I didn't know what S326 or 8W-13-26 was exactly or if I could even access the wire there. And after seeing all the different issues people on the interne are having with TIPMs, I thought changing the TIPM was worth a shot. I knew I could return it if that wasn't it. I mean I could have pulled the C3 plug and Ohmed the 8 pin back to the WT/VT wire at the lamp then I would have seen the open through the alarm. In hindsight I should have removed the alarm first. Guess I just got lazy. Thanks for all the help though. Moc's trouble shooting was spot on.
 

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So you got it working? Nice!
8W-13-26 is the page number, which is a lot easier to realize if you have the whole book.
S362 is a splice in the wiring harness.
There are many pages at the beginning of the "8W" section that explain these notations, but without having the whole book, there is no way you could realize that.
I am glad (and surprised) you can return the TIPM, you have a great supplier, but this practice could result in a bad one getting put back on the shelf, a common problem I have had to deal with in all of my life doing trouble shooting for industrial electronics.
 
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