Service ABS and other display
Thread Starter
Burning Brakes
Joined: Mar 2001
Posts: 1,020
Likes: 0
From: Plano Texas
Service ABS and other display
On my 2000 with 56k miles the service ABS, service Traction System and service active handling display came on. I checked for DTC codes and my code reader said there were no codes found. I reset the codes anyway on my code reader and started the car. The lights went off and no messages in the display. I re started the car and the lights were on and the messages were in the display again. I shut the car off, went inside for about 15 minutes, came back out and started the car several times and there was no display.
Any idea what is going on?? Thanks for any help!!!
Any idea what is going on?? Thanks for any help!!!
Le Mans Master
Joined: Nov 2005
Posts: 6,993
Likes: 25
Your code reader (unless it a GOOD one) won't read these codes. Read the electrical sticky at the top to get the codes via the DIC, it can get them. Cheapy $100-200 scanners only get GENERIC codes, not model specific.
Thread Starter
Burning Brakes
Joined: Mar 2001
Posts: 1,020
Likes: 0
From: Plano Texas
Thanks for the reply. I pulled the codes from the car using the display buttons. I had some set but all showed an H which I believe is all history. Although there were several, none indicated an ABS or Active Trac Cntl issue. Any suggestions. I am going now to drive the car to see if they come back on. I did have the RR tire low with air pressure but I don't think this would cause any DTC codes....
Burning Brakes
Joined: Jan 2006
Posts: 1,170
Likes: 27
From: Magnolia Greens NC
C1243 H Tip
Service ABS/Service Traction Control DTC C1243 H
When the car is started the system turns the ABS pump on and off and if the voltage readout is not high enough, code C 1243 is set and you get the messages. If you do not have the interface connector for the EBCM, pull the module away from the pump section. I measured the resistance of the pump motor from pin number 8 ((from left to right) (it is the first pin on the right hand connector) to the frame ground and it was in spec according to the manual. When a pump is new or has been rebuilt it requires some break in period. If a pump has not been used for some time it will also draw more current due to sediment build up and not being exercised. With this in mind I pushed a wire into pin 8 and ran it over close to the positive post of the battery so I could exercise the pump manually. The pump came on the first time I touched the positive post but sounded sluggish. I exercised the pump about 6 more times for about 15 to 20 seconds at a time. I put the EBCM back on the pump section cleared the codes. If you try this use a heavy gauge wire and be aware the wire may get warm as you touch the battery. The pumps on these ABS units are most likely not broken in since they hardly run during the life of the car.
Burning Brakes
Joined: Oct 2004
Posts: 931
Likes: 35
From: Rowlett, Texas
Mac, I see you are in Plano, and have a 2000. I am in Rowlett now.
My 2000 has set the 1243 code several times in the past couple years, due to a sticky ABS motor.
There are several long threads about exercising the motor.
I have exercised mine 3 times, last time was just a few days ago.
Do a search here and read up on it - I have posted in all of these threads I think.
Unfortunately, the 2000 motor connector (pin 8) is pretty hard to get to in the 2000. You have to take the top radiator hose off, pull the ABS module loose from it's mounts, unbolt the EBCM from the BPMV, and then you can reach the infamous pin 8.
Code 1243 is a serious issue, because when the motor gets sticky, it pulls more current thru the relay in the EBCM. If the relay fails, or takes other components in the EBCM out, we are in deep trouble, because these units for the 2000 are not available new anymore, and rebuilding them is difficult if not impossible. The later models are easy, but not ours.
I would suggest that if the 1243 code continues to bug you, you will have to address it via the motor exercise route.l Meanwhile, try not to activate the ABS, traction control, or active handling, which will just stress the relay and the EBCM.
Feel free to PM me, maybe I can offer help or advice.
DG
My 2000 has set the 1243 code several times in the past couple years, due to a sticky ABS motor.
There are several long threads about exercising the motor.
I have exercised mine 3 times, last time was just a few days ago.
Do a search here and read up on it - I have posted in all of these threads I think.
Unfortunately, the 2000 motor connector (pin 8) is pretty hard to get to in the 2000. You have to take the top radiator hose off, pull the ABS module loose from it's mounts, unbolt the EBCM from the BPMV, and then you can reach the infamous pin 8.
Code 1243 is a serious issue, because when the motor gets sticky, it pulls more current thru the relay in the EBCM. If the relay fails, or takes other components in the EBCM out, we are in deep trouble, because these units for the 2000 are not available new anymore, and rebuilding them is difficult if not impossible. The later models are easy, but not ours.
I would suggest that if the 1243 code continues to bug you, you will have to address it via the motor exercise route.l Meanwhile, try not to activate the ABS, traction control, or active handling, which will just stress the relay and the EBCM.
Feel free to PM me, maybe I can offer help or advice.
DG
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Burning Brakes
Joined: Oct 2004
Posts: 931
Likes: 35
From: Rowlett, Texas
Ha, when you're my age you defiitely HAVE to remove the top rad hose, just to get the bifocals to focus on the screws! but, yeah, it can be done with the hose intact, I guess.
Certainly nowhere near as bad as replacing the passenger-side AIR valve.
DG
Certainly nowhere near as bad as replacing the passenger-side AIR valve.
DG
Le Mans Master
Joined: Nov 2005
Posts: 6,993
Likes: 25
Did mine from underneath-much easier.
