Replaced motor . checked all grounds
With engine running and not.?
front or rear wiper,?????
toss dice, land on front......( 50/50 odds)
it's a network now, no more old style, point to point one wire for every thing on car and a ton of copper to match.
first test all fuses, then scan it.
or it will get expensive fast guessing.
the Switch bank brain under the wiper stalk
sends what you did, on to the LIN bus network,
The switch there does not actually drive lamps.
its just a digital switch, (some are 3 level logic)
The switches on some use a bank of internal resistors to tell the switch bank what you did.
this LIN data stream, is sent to the cluster brain
and also to the TIPM brain.(Allen Turing brains)
the cluster responds for many actions, taken and shows you what you did (EG) for blinkers, flashes the cluster TURN lamp. in same.
Wipers front.
the command for wipers are sent to the TIPM
this device, runs (DRIVES) a huge number of things on the car. (ask for schematics, I have it in pdf forum now,)
Totally Integrated power module. or TIPM
It drives the wiper motor using internal high powered electronics. Direct drive,..
It also senses the wipers location called the sense wire.
The TIPM brain, has complex logic to do all that
it gets many commands to do, (fast ,slow, intermittent wipe) and via TIPM computer memory instructions,
does the job.with pure software. inside.
the wipers can fail for many reasons besides simple mechanical jam or a cut wire.
1: fuse blown to any of those module. check them all if you are SAVVY!
2: TIPM bad,
3: TIPM power supply pin too low, say car battery is 10v ( are head lamps dim,, hummmmmmmmmm)
4: TIPM programming bad. (scrambled brain, needs re-flash)
5: CAN bus or LIN bus, noise, or gross collisions of data on that vital bus. (only scans work here)
IF all fuses are good we scan it .
as always , we check battery voltage first.
with out fail, and listening to the starter motor.
if the starter is dead or weak , we want a strong battery to make all this complex electronics in the car work.
A $10 voltmeter and you know know, battery is above 12.6vdc rested, key on, engine off.
start engine and it goes above, 13.3vdc.
That same tool i can test all fuse. ask.
end comments.
FSM page:
the first page states (QUOTE)
The most reliable, efficient, and accurate means to diagnose the front wiper motor or the electronic controls and communication related to front wiper motor operation requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.
NOTE The front wiper and washer switches are integral to the right multi-function switch. The right multi-function switch is hard wired to the left multi-function switch/Steering Control Module (SCM), which communicates with the ElectroMechanical Instrument Cluster (EMIC)/Cab Compartment Node (CCN) over the Local Interface Network (LIN) data bus.
Before performing any of the following tests, determine whether the other functions of the right and left multi-function switch/SCM are operational. If only the right multi-function switch functions are inoperative, test and repair the right multi-function switch or the jumper harness between the right and left multi-function switches before attempting to repair the Front Wiper and Washer System. If both the right and left multi-function switch/SCM functions are ineffective, diagnose and repair that problem before attempting to repair the Front Wiper and Washer System. end quotes.
what's MORE?
what is missing is a block diagram, here ill make one so we can all learn....
Binary switch stalk. via 7 pin connector.
to:
SCM module (steering control module)
to: (i guess the SCM is the Bank switch brain)
the LIN>CAN network, (the SCM sends digital commands to)
to:
if you scan it and see errors from SCM to TIPM
that needs to be corrected first.
garbled bus data will make the TIPM go nuts.
That ground bad theory fails. because...
the motor uses Ground G112
if that wire fails you get vast numbers of failure from 10 majors. including oxygen sensor 1/2
so it;'s not G112 bad.
the motor has fast winding and low speed.
and a common ground. and a sense wire.
never skip scanning the car, or its all like a dog chasing his tail.
Battery not discharged, (you never said car runs)
fuses all good, (means tested)
scanned and not DTC errors. (i bet yes errors)
there 7 pages for the whole can/lin bus.
but this one is switch banks.
one tricky aspect of this, is the cluster
I think translates this wiper data commands from the LIN bus and then rebroadcasts to to the CAN-BUS. that he TIPM uses.that means.
so error are both buses are important.
this is the LIN-bus, the cluster retransmites the commands do the CAN-BUS. so if cluster is dead
that kills those commands,... out.bound. see?
tricky, i told you.
as ALWAYS do not play near AIR BAG they can kill.. (defeat them first per manual)
the full set of schematics are here.
ultra compressed. in 7zip format
9MB size.http://jeepdied.com/data/MK/pdf/mk08all....
the FULL FSM is here.
read the wiper pages, it's on a network.
the service CD is $135
https://www.techauthority.com/en-us/prod...
or log in to Mitchells, DIY.
Google that .
as you can see the switch is easy to test.
so for low speed (dead now)
the switch reads open , open, open, in binary
that is in binary a 1,1,1 (logical)
it's either 5v 5v, 5v or 12,12,12v.
or switch unplugged
the 3 pins all measure infinity OHMS.
to pin 7 common (ground)
super easy test here,no need at all to rip column asunder.
just unplug the conn, and check ohms
but again.
battery charged.
all fuses good.
NO SCAN ERRORS is next. or fail you will
now the 2 photos.
the switch and then the logic of same.
if you look at the binary there,
you see that , if the switch is bad, it will be sending the wrong commands to the brain.
if switch 6 shorts, you are stuck in 1 to 4 delay.
if all 3 pins are cut, you get wiper low for ever.
knowing these facts, one can easilly discount
that the switch is not bad. after testing
all 8 modes and noting the results.
(note 4 wires, for 8 modes) saving 4 copper wires)
here ill quote mil doctrine in this for 45 years. (complex systems we've used, way before cars had any of this! stuff!)
we check for valid power supplies first.
in this case the car battery weak.
or low system voltage (12dc primary power)
if only fails driving we check voltage running. (make sense?)
OK, power is GOOD. (a voltmeter is the tool)
1: check all features on car, in the old days, they say turn all knobs, check all functions.
still applies to 2016.
for example is only high wiper speed (weak)working (as said)
but what about the OTHER 6 modes.?
and what about all other switches on the column, blinks(turns) HAZ , HL, park, horn, any of those fail too?
do all lamps in the cluster work and gauges.
1a: does car drive perfectly at night (no rain sure)??? no other symtoms?
1b: starter sounds robust (not weak)
1c: radio work , nAV , all displays in car work ok>? no funny messages.?
2: check all fuse next? do the all,
means test them,
fuses that look blown ARE.
fuse that look ok, can be cracked,
we test them, off car
ohms =0 good
infinity bad,
OR?
on car test, 12v both sides key on = good.
less bad.
learn now, that some things must work that seem unrelated to the failure. (like the cluster )
NEXT! THE SCANNER, (it's not expensive)
3: scan it yet, not doing this is going to cost most car owners a big waste of cash.
eg: DTC errors. Diagnostic trouble codes.
a: can-bus errors,
b: lin-bus errors.
c: comm errors of any kind.!
d: CLuster, or TIPM , or ESC or switch bank or POD errors.
4: the wiper motor can be tested on a bench.
using any 12vdc battery or power pack with enough amps. 15amp i recommend , min.
no need to guess if a motor works or not
it's just a DC brush motor. 2 speeds,
5: the switch can be bad, i'd say last possible if it looks undamaged.(but ?)
the switch logic is posted above,
0ohms = closed.
infinity = open.
unplugged sure.
did you know modern jeeps even scan and show
DTC for blown fuses.
and even dead critical outputs. ?
and more, some 100 errors, or more,
not scanning is the #1 reason for a thin wallet.
see here 10,000+ times.
my answer, is , in conclusion
it can be many things, ill avoid gue$$ing.
QOD:
one of the parts is $800 + programming.
are you going to guess that?
×
If the old motor did the same thing. It could the switch(turn signal). I have never replaced one for this. the module for wipers is built into the motor. I would go back to the grounds, and power. 12 volts at the wiper plug from the power and ground pins. Then check continuity of both wires. Over 5 Ohms. fix/replace that wire.
not true at all , you are thinking in 1980s terms or older.
its 2007.
and is not built in to the motor, only the senses switch is in the motor. gear box.
this motor is computer and high power driven.
the ground comes from the TIPM
in fact the motor connects directly to it and only it.
all facts.
why not read the book on car first and not guess/.?
Your right. Not quite the 80's but 07 is on the money. I am quickly learning about the TIPM. May mistake for wanting to learn to rebuild transmissions. Now I do strictly electrical again. I'll catch up soon.
good, use real fsm first read the chapters.
it covers how each system how it really works.
most the cars are networked now. (saves a ton of copper)
the switch bank, on this car, (controls)
sends data (eg; flip a switch) data to the TIPM, and it does what you ask
turns sigs?
or wipers.? etc.
checking fuses is first.
scanning 2nd.
the trick with the cluster is deep in that book, how the lin buss data is re transmitted to the can-bus.
this fact might cause. for example
say you turn blinkers on.
and the cluster lamp flashes and clicks
see it heard the LIN command but the cluster
re-transmits it to the CAN bus but its trashed there.
and is never received by the TIPM.
and blinker are dead. on car.
the lin bus is a slow speed, bus,(Local Interconnect Network) and is cheaper and limited to 16 nodes.
the canbus 2 wire is fast and long distance.
and works in multimaster mode, (no ones in charge)
as state here, very well.!http://www.jeepforum.com/forum/f98/bus-s...
knowing who is the master, on the bus is important.
from the manual we have this key paragraph.
---------------fsm---------------------
The ElectroMechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN) is the Local Interface Network (LIN) master {ccn = cluster}
module in this vehicle and it gathers information from the compass module, the instrument panel switch bank, the Steering Control Module (SCM), and
the Heated Seat Module (HSM) through the LIN data bus.
--------------comments)
the cluster being master of all 16 LIN nodes
can translate data and rebroadcast it to the
Can-bus.
these facts are key to diagnosing any modern jeep.
hope this helps some.
what is a master?
this means the node, LIN device must ask permission to start a communication.
where in the CAN bus is multi-master
each node can be master.
in that it , announces that it has the bus now, after being sure , it's FREE.
see?
Knowing this, we can see that all bus systems
there can be collisions.
and if this happens you get DTC errors.
we call it someone is trashing the bus.
Yes it does. Thanks.
Is this applying to the new chryslers also.
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WINDSHIELD WIPERS
It
can be faulty wiper motor or blown wiper control fuse.
Do
you hear any kind of noise when you starter the wiper function. If yes then
fuse is ok, but issue is wiper motor.
If
no movement at all and no noise then its blown fuse or shorted/loose wiper
control wiring: -----
For
complete troubleshooting i suggest you a helpful link with accurate
solutions.
-------------
Click
the link below: -------
http://alltypesofpartsreplacing.blogspot.com/2012/12/windshield-wipers-windshield-wipers-not.html
--------
These will help.
Thanks.
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