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  #13  
Old 02-14-2014, 02:01 PM
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Re: EVIC message - 4WD not available transmission overheated

Here is what is noted on $0 service invoice.

C/S when in 4WD auto shows unavailable at times and transmission over temp on display.
Scanned system to find stored DTC C1477-4B transfer case clutch over temp intermittent. Checked temp sensors, found OK. Cleared codes and road test. Condition to set code not present. Checked for updates or TSB's. Non found.
Unable to duplicate concern at this time.

I assume someone here has a list of the codes and what they signify.
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Old 02-14-2014, 02:33 PM
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Quote:
Originally Posted by grandriver125 View Post
Here is what is noted on $0 service invoice.

C/S when in 4WD auto shows unavailable at times and transmission over temp on display.
Scanned system to find stored DTC C1477-4B transfer case clutch over temp intermittent. Checked temp sensors, found OK. Cleared codes and road test. Condition to set code not present. Checked for updates or TSB's. Non found.
Unable to duplicate concern at this time.

I assume someone here has a list of the codes and what they signify.
The vehicle is so new it is doubtful anyone would have the codes.

It is weird they call it transfer case unless they call the whole system the transfer case. The ptu only has gears and an actuator so they must be talking about the rear axle clutch.
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Old 02-14-2014, 04:06 PM
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Re: EVIC message - 4WD not available transmission overheated

C1477-4B-TRANSFER CASE CLUTCH - OVER TEMPERATURE
  • When Monitored: Ignition on.
  • Set Condition: The Drive Train Control Module (DTCM) detects an overheat condition due to excessive usage of components from hard driving conditions (Mud, Sand, Snow, 2WD Chassis dynamometer etc.) or ambient temperatures.
Possible Causes

DRIVING CONDITIONS
AMBIENT TEMPERATURE SENSOR
ELECTRONICALLY CONTROLLED CLUTCH (ECC)
DRIVE TRAIN CONTROL MODULE (DTCM)
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Old 02-14-2014, 07:47 PM
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Re: EVIC message - 4WD not available transmission overheated

Quote:
Originally Posted by fnkychkn View Post
C1477-4B-TRANSFER CASE CLUTCH - OVER TEMPERATURE
  • When Monitored: Ignition on.
  • Set Condition: The Drive Train Control Module (DTCM) detects an overheat condition due to excessive usage of components from hard driving conditions (Mud, Sand, Snow, 2WD Chassis dynamometer etc.) or ambient temperatures.
Possible Causes

DRIVING CONDITIONS
AMBIENT TEMPERATURE SENSOR
ELECTRONICALLY CONTROLLED CLUTCH (ECC)
DRIVE TRAIN CONTROL MODULE (DTCM)
Thanks. Clearly something is haywire since 70 mph in 8th gear and auto mode is not exactly hard driving. It has also occurred at lower speeds. I now wonder what it is going to take to get it corrected.

GR
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Old 02-14-2014, 08:34 PM
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Quote:
Originally Posted by grandriver125 View Post

Thanks. Clearly something is haywire since 70 mph in 8th gear and auto mode is not exactly hard driving. It has also occurred at lower speeds. I now wonder what it is going to take to get it corrected.

GR
Is your ambient temp display relatively accurate?
If temp display is accurate, I'm thinking a software update will most likely fix it.
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Old 02-14-2014, 08:37 PM
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Re: EVIC message - 4WD not available transmission overheated

Quote:
Originally Posted by fnkychkn View Post
Is your ambient temp display relatively accurate?
Yes. very close. Ties in to Weather Channel within a degree or two.

Further, it sure hasn't been that warm in Florida the past month. I don't think ambient has been as high as 80 when this warning popped up.
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Old 02-14-2014, 09:25 PM
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I had a similar issue with a customer's jeep. He couldn't wait and said he'd come back of it ever happened again. Haven't heard from him on over month.
Btw, it was -5*F when it happened.
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