After fixing the EBCM, now I get the code 1241. I read to check/clean plug or maybe replace magnasteer. Where is this device at and what other things to check? Thanks.

 

The Speed dependent Steering System (MAGNASTEER) incorporates its controller into the EBCM. The EBCM controls the amount of current supplied to the MAGNASTEER actuator based on input from the wheel speed sensors and based on the steering wheel position sensor.


One or both of the MAGNASTEER actuator circuit wires become open or shorted.

A malfunction DTC is stored. No ABS/TCS indicator lamps are turned ON but MAGNASTEER is disabled. ABS/TCS remains functional.

A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.
The On-Board Diagnostic (clearing DTCs) feature
Using a scan tool


The following conditions may cause an intermittent malfunction to occur:
A poor connection
A rubbed through wire insulation
A broken wire inside the insulation
Check the frequency of the malfunction by using the enhanced diagnostic function of the scan tool. Refer to Enhanced Diagnostics
Check the following for all circuitry suspected as causing the intermittent complaint:
Check for backed out terminals
Check for improper mating
Check for broken locks
Check for improperly formed terminals
Check for damaged terminals
Check for poor terminal to wiring connections
Check for physical damage to the wiring harness

 

Thank dadaroo for the useful Info. Where is the magnasteer?

 

Not at home now, will look to get you the circuit routing info later. Never worked on this before we'll both be in new territory. I am sure others will chime in also, hopefully.

The Magnasteer is the way to vary the steering effort from light to more resistance when you go faster.

 

Magnasteer is your steering rack. Not something you want to replace unless you really have to.

How did you fix your EBCM? Did you send it out to get the C1214 relay error fixed? A lot of times they just send an EBCM they have on the shelf. Since they have no way to know whether the EBCMs they are sent have any failures besides a bad relay you just take your chances.

If you didn't have that failure before you repaired the EBCM i would suspect the EBCM or the wiring going to the EBCM since you had to manipulate that to replace it. Right now my gut tells me the EBCM is a probable cause.

If you didn't get your original EBCM back from a repair shop it might need to be programmed to the car. Do you have any other codes?

Bill

 

There are only two wires from the EBCM to the steering rack that are involved. They are a Grey and a White wire coming from EBCM connector pins C and D. They should terminate to the solenoid in the rack very near where the steering column connects. There isn't much other info in the FSM that would help. It says you have an open or shorted circuit.

If you can locate both ends you could at least do a continuity check for an open circuit or short to ground somewhere.

Not sure what else I can do to help. Please feel free to ask if you think of anything.

 

Back to beginning. I was having all kind of codes (Do not remember the codes but one of them was bad EBCM). So, I sent it off to get it repaired. Received the EBCM (I know it my original EBCM because the pry mark is still there where I tried to open it) and installed it. Crank the car and no codes. Back the car out and put it in drive. The moment I hit the brake which was soft, the check engine light came on. The abs & TC lights also came on and the brake felt hard. Checked the code afterward and the only current code is 1241.

 

You SURE it was a 1241 and not a 1214??

 

Yes, it 1241.

 

Ok, I need to find the solenoid plug. Is it under hood or under dash?

 

I notices I have some history codes popping up lately. What weird is when I check the code with the car in on position. I have C1218H, C1237H, C1241HC, C1256H, C1261H, C1262H, C1263H, C1264H, C1266H, C1268H, C1271H, C1272H, C1273H & C1274H. But with the car running, same codes with HC on end.
Are these codes signs of bad BVMP?

 

Guess I'll have to take care of this myself.

 

Don't worry Grasshopper. Some of us are juggling more ***** than just Forum issues.

Many codes will go to H once you turn the car OFF. If you pull any active codes before you turn the ignition to OFF they can show as C or HC.

Will try and look at your more recent issues as soon as I can.

PS: What year is your car? Also curious about what made you have the EBCM repaired. I don't think it is "fixed" yet.

 

2002 corvette. ASAP Speedo offer lifetime warranty on their repairs. I'll send it back if I have to.

 

I think it is time for you to call them. Just make sure the connections at the EBCM are fully seated first.