no power to tail lights - Page 2 - Dodge Caliber Forums
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post #11 of 22 Old 10-25-2019, 12:18 AM
dbacon
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Now that sounds like a good plan!

Last edited by dbacon; 10-25-2019 at 12:32 AM. Reason: speling
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post #12 of 22 Old 10-28-2019, 06:25 PM Thread Starter
Mike Samansky
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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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post #13 of 22 Old 10-29-2019, 02:16 AM
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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.

Last edited by dbacon; 10-29-2019 at 03:15 AM.
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post #14 of 22 Old 10-29-2019, 12:10 PM
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Quote:
Originally Posted by dbacon View Post
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.

Quote:
Originally Posted by dbacon View Post
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

Last edited by Moc; 10-29-2019 at 12:39 PM.
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post #15 of 22 Old 10-29-2019, 06:16 PM
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Thank you, Moc, for explaining the way the switch works.
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post #16 of 22 Old 10-31-2019, 12:51 PM
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Quote:
Originally Posted by dbacon View Post
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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post #17 of 22 Old 10-31-2019, 03:42 PM
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Quote:
Originally Posted by Moc View Post
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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post #18 of 22 Old 11-02-2019, 04:43 PM Thread Starter
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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.

Last edited by Mike Samansky; 11-02-2019 at 04:51 PM.
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post #19 of 22 Old 11-02-2019, 05:48 PM Thread Starter
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Quote:
Originally Posted by dbacon View Post
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.

Last edited by Mike Samansky; 11-02-2019 at 05:53 PM.
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post #20 of 22 Old 11-03-2019, 01:17 AM
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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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