RDS-TMC connection: RDS-TMC connection is faulty

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MalcolmSu
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RDS-TMC connection: RDS-TMC connection is faulty

Post by MalcolmSu » Sun Aug 17, 2014 12:28 pm

all has been well for months then this popped up - "RDS-TMC connection: RDS-TMC connection is faulty". Searched on here for the solution. Two suggestions. Tried disconnecting the power for 5 mins. No joy. Then bought replacement TMC unit off ebay. Arrived yesterday so fitted it. Error message is still there. Tried power cycle again. No joy. Other than "you've bought a faulty unit of ebay" any other suggestions?

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Re: RDS-TMC connection: RDS-TMC connection is faulty

Post by Shoppinit » Sun Aug 17, 2014 8:42 pm

Odd. You can put the RNS-D in diagnostics mode to see if it's talking to the TMC module, but I don't think it'll tell you anything you don't already know - ie it's not talking to it.

I would suspect a faulty replacement unit. Could be the CAN wiring between the unit and the RNS-D but I just can't see it somehow.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

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Re: RDS-TMC connection: RDS-TMC connection is faulty

Post by Shoppinit » Mon Aug 18, 2014 11:24 am

Did you get the exact same part number?
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

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Re: RDS-TMC connection: RDS-TMC connection is faulty

Post by MalcolmSu » Mon Aug 18, 2014 5:32 pm

I did - 4B2919894. I've just bought another one from eBay (UK based this time) so will post result of that in a few days...

I found a link where someone attempted a repair by replacing three of the capacitors so I may try that with my two duffers if this one works

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Re: RDS-TMC connection: RDS-TMC connection is faulty

Post by Shoppinit » Mon Aug 18, 2014 5:36 pm

I had a look at the circuit board in my deceased TMC module. Didn't see anything that look like it might respond to a prod with a soldering iron. Be interested to see your link though.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

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MalcolmSu
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Re: RDS-TMC connection: RDS-TMC connection is faulty

Post by MalcolmSu » Mon Aug 18, 2014 5:56 pm

http://knissine.wikidot.com/rds-tmc-tuner-fix

different part number but internals look exactly like mine.

I also noticed that the bottom CB is soldered to the case which would suggest there some connection (earth?) but refastening my unit back into the bracket made no difference. Some of the links I looked at talk about a fuse specifically for the TMC unit but I've not been able to track one down. Is there?

The first unit came from Latvia - today's eBay purchase comes from a breaker just 3 miles from me - only I'm 40 miles away at work when he's open so it's "in the post". Fingers crossed...

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Re: RDS-TMC connection: RDS-TMC connection is faulty

Post by Shoppinit » Mon Aug 18, 2014 6:09 pm

Definitely no fuse. Sorry.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

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MalcolmSu
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Re: RDS-TMC connection: RDS-TMC connection is faulty

Post by MalcolmSu » Tue Aug 19, 2014 6:25 pm

Bugger! 2nd RDS-TMC unit arrived in the post tonight (our postal service gets later and later!). Quickly plugged it in - same error.. :shock:

Will pull the radio at the weekend and trace some wiring...

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Shoppinit
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Re: RDS-TMC connection: RDS-TMC connection is faulty

Post by Shoppinit » Tue Aug 19, 2014 6:29 pm

Arse. :(
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

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Shoppinit
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Re: RDS-TMC connection: RDS-TMC connection is faulty

Post by Shoppinit » Tue Aug 19, 2014 6:30 pm

Is your menu button working?
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."


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Shoppinit
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Re: RDS-TMC connection: RDS-TMC connection is faulty

Post by Shoppinit » Wed Aug 20, 2014 9:14 am

Can you communicate with the RNS-D with the Vagcom?

Presumably you've got no display on the dash for music or nav or anything?
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

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MalcolmSu
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Re: RDS-TMC connection: RDS-TMC connection is faulty

Post by MalcolmSu » Wed Aug 20, 2014 9:44 am

I haven't tried Vagcom yet but will give that a try tonight. There's no info on the dash and I've tried cycling the display off and on via the Menu button with no success. The 'hidden' menu on the rns-d shows no Canbus connection (surprise).

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Shoppinit
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Re: RDS-TMC connection: RDS-TMC connection is faulty

Post by Shoppinit » Wed Aug 20, 2014 10:06 am

The TMC module gets the car CANbus network from the dashpod. Could be a wiring fault. Have you scanned the car for faults? Any other odd CAN related faults coming up?
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

User avatar
MalcolmSu
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Posts: 757
Joined: Mon Mar 03, 2008 8:26 pm
Location: Falkirk, Scotland
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Re: RDS-TMC connection: RDS-TMC connection is faulty

Post by MalcolmSu » Wed Aug 20, 2014 8:32 pm

A quick scan with VCDS-lite tonight threw up the following codes - not sure which are relevant or which to focus on...

-------------------------------------------------------------------------------
Address 17: Instruments Labels: 4B0-920-xxx-17.LBL
Controller: 4B0 920 983 B
Component: KOMBI+WEGFAHRS. VDO D15
Coding: 01484

2 Faults Found:
01300 - Control Module for Navigation with CD-Rom (J401)
49-00 - No Communications
01304 - Radio
49-00 - No Communications

-------------------------------------------------------------------------------
Address 37: Navigation Labels: Redir Fail!
Controller: 4B0 035 192 K
Component: RNS 4.2 H06 BNO 0140

1 Fault Found:
01317 - Control Module in Instrument Cluster (J285)
49-00 - No Communications

-------------------------------------------------------------------------------
Address 56: Radio Labels: Redir Fail!
Controller: 4B0 035 192 K
Component: Radio BNO 0001
Coding: 00017

2 Faults Found:
00856 - Radio Antenna
36-10 - Open Circuit - Intermittent
01317 - Control Module in Instrument Cluster (J285)
49-00 - No Communications

-------------------------------------------------------------------------------
Address 57: TV Tuner Labels: None
Controller: 4D0 919 146 B
Component: TV Tuner H10 1206
Coding: 0000010

1 Fault Found:
00861 - Connection to Navigation Computer
011 - Open Circuit - Intermittent

-------------------------------------------------------------------------------
Last edited by MalcolmSu on Sun Jun 21, 2015 2:01 pm, edited 1 time in total.

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