When I left the garage last Wednesday (a pretty rainy day) with my 2001 Coupe (MN6, some 32000 miles) that I had bought 3 weeks ago, the DIC signaled that these three systems needed to be serviced. Stopping the engine and restarting it did not “solve” the problem. So I went to my dealership who contacted Warranty Direct where I had purchased an extended warranty. I learned that the break pressure modulator and the control module were malfunctioning – replacement cost some $3100.

Yesterday, a beautifully warm and dry day, the message disappeared and today (nice weather too) I picked up the car which is still fine. During spirited driving I could indeed verify that all three systems work fine (to my feeling). It looks to me as if the problem is rather due to bad electric connections than bad devices. Thus, when it gets moist, the DIC complains. Indeed, I had similar problems with my previous 1997 Coupe (A4, 120,000 miles), but with that car, switching off the engine cured the problem.

I find it odd that this system is malfunctioning in such a rather new car. Somehow I feel that it would be sufficient to clean, oil, and isolate the electrical connections against moisture. Sure, Warranty Direct pays the bill, but still, I do not want to waste their money.

Any experiences/opinions on this issue?

Thanks, Robert

 

It seems the Service traction control message is a popular one this week on the forum. Another forum member just posted in the tech forum concerning the same issue. He's still trying to isolate where the problem exists but from some of the responses it appears that the computer needs replacing. I sure hope I don't get this message... It looks costly to replace the computer. I'd definately check some connections and read some codes for yourself to maybe find your way around replacing computers. Thats what I plan on doing should I be greeted with this error. Darn JL4 option....

 

If I turn on my hazzard flasher while the car is running, I get those same messages. Turn it off and restart and all is well.

Wierd Quirks

 

Sometime if you have the traction control button on and you exceeded the computers amount of tq it can understand it will light up all the DIC lights. I did this once when I shot n20. I turned the car off and it was ok and never came back. Just something to think about.
Jon

 

According to my mechanic the sensors were dirty. The last time I had this problem, I had just washed the car and probably oversprayed tire cleaner on the brake system. I possibly reset it at least 7 times i( in a period of 3 weeks) before it completely went away. I hope it is just dirt for to fix it seems to be mighty expensive. But, who knows replacing those parts may not even solve the problem - at least for my car.

 

I am having the same message right now, I hope the cost to repair it isnt $3k. I dont have an extended warranty, 02 Z with 17k miles.....

 

I think you have short somewhere in your hazards ... If they power is lost somewhere, it'll do that. I learned from a real long/bad experience.

 

Had the same problem with mine.
There is a thread that shows pictures of the grounding points. i'll see if I can find the link and put it on this thread, but I took apart, cleaned with electrical cleaner, and reinstalled G401 and G402 and I have not had a problem since.
I am in the process (bout 95% done) in finding, cleaning and resecuring all grounding points. Car runs better than when I picked it up.

GROUNDING POINTS
engine ground strap top left frame behind left front wheel well
G101 left front frame (with SP101)
G102 right front frame (with SP100)
G103 left front of engine
G104 frame next to battery (with G108 & SP102)
G105 left lower engine block, engine ground strap & wire
G106 Battery negative pole
G107 Left rear head
G108 frame next to battery (with G104)
G201 bottom of A-pillar, left (with SP201 & SP203)
G202 bottom of A-pillar, rt, bolted at the bottom (with SP202)
G205 inside door pillar driver seat (with G301)
G301 inside door pillar passenger seat
G302 inside door pillar driver seat (with G205)
G401 left rear outer frame
G402 right rear inner frame
SP201 bottom of A-pillar, left (bolted with G201)
SP202 bottom if A-pillar, rt (bolted to G202)
SP203 bottom of A-pillar, left (taped to wire bundle, with G201 coming out of it)
G101: windshield washer fluid pump
Windshield washer fluid level switch
Brake fluid switch
Headlamp door assembly, left
G102: cooling fan, right
Cooling fan 3 relay 44
Horn assembly
Underhood lamp
Headlamp door assembly, right
Headlamp door control module
A/c compressor clutch
A/c compressor clutch diode
Secondary air injection pump
G103: Electronic brake control module (ebcm)
G104: battery negative pole
Splice pack SP102:
Marker lamp, right front
Marker lamp, left front
Park/turn signal lamp, right front
Park/turn signal lamp, left front
Turn signal lamp, right front
Turn signal lamp, left front
Splice pack SP208:
Body control module (bcm)
Instrument panel cluster (ipc)
Data link connector (dlc)
Inflatable restraint & diagnosis module
Inflatable restraint ip module disable switch
Park/neutral switch
Remote control door lock receiver
G105: fuel pump relay 35
Engine oil level switch
Heater O2 sensor, bank 1 sensor 1
Heater O2 sensor, bank 1 sensor 2
Heater O2 sensor, bank 2, sensor 1
Heater O2 sensor, bank 2, sensor 2
G106: battery negative pole
Ignition relay 42
Powertrain control modules (pcm, 4 wires)
Throttle actuator control module (tac)
Mass airflow sensor (maf)
G107: ignition control modules 1-3-5-7
Ignition control modules 2-4-6-8
G108: Electronic brake control module (ebcm)
G201: Splice pack SP201:
Data link connector (dlc)
Air temperature actuator
Instrument panel cluster (ipc)
Traction/suspension control switch
Driver door module (ddm)
Door latch, driver
Auxiliary power outlet
Windshield wiper motor
Steering column lock
Footwell courtesy lamp, left
Instrument panel cluster (ipc)
Hazard switch
Telescopic actuator switch
Splice pack SP203:
Remote CD changer
Fuse block I/P
Speaker, right door
Speaker, left door
Radio
G202: Splice pack SP202:
Passenger door module (pdm)
Door latch, passenger side
Body control module (bcm)
HVAC control module
IP compartment lamp
Footwell courtesy lamp, right
Vanity mirror lamp, left
Vanity mirror lamp, right
Inside rearview mirror
Bose relay 45
Ignition switch
Blower motor relay c60
Blower motor control processor
Hood ajar switch
Cigar lighter
A/t shift lock control solenoid
G205: seat belt switch, driver
Seat control module (scm), driver
Seat pump, driver
Seat belt switch, driver
Seat relay center, driver
G301: defogger grid
G302: Splice pack SP302:
Seat relay center, passenger
Seat pump, passenger
Rear compartment courtesy lamp, right
Rear compartment courtesy lamp, left
Rear compartment lid latch
Rear compartment lid latch, right
Rear compartment lid latch, left
Folding top lid latch
Folding top release switch
Fuel door lock actuator
Radio power antenna
G401: Splice pack SP400:
Fuel pump & sender assembly, left
Fuel level sender, right
Tail, stop, turn signal, rear left
Tail, stop, turn signal, rear right
Center high mounted stop lamp
Backup lamp, right
Backup lamp, left
License lamp, right rear
License lamp, left rear
Marker lamp, left rear
Marker lamp, right rear
G402 electronic suspension control module (esc)

 

Thanks for the list Jim! Very helpful ... copied and saved The people here are awesome.

 

Go to this thread for a quick map on grounding points, still looking for the good one.
http://forums.corvetteforum.com/show....php?t=1010042

 

Battery was probably run down from sitting too long. Weak battery will do it everytime.