I've had EBCTM codes and problems since I bought my car. they are usually few and far between so I haven't bothered with them much. I got another one day and really want to get this fixed once and for all. I'm getting the well documented Service TC, Service ABS, service active handling messages. they come up on occasion when starting the car, maybe 1 out of 100 times. they also come up 1/3 or 1/2 or so of when the active handling or TC kicks in. its been getting better lately, but I want them gone! I think I know what the problem is. my code is 1242 I think, some descriptions call it ABS motor stalled, some call it ABS motor ground. from researching here I think I have a bad ground connection to my ABS pump motor. I cleaned the side on the frame rail to no avail. its a 99, so I've got the ground right at the end of the motor, the small screw with 2 nuts on it, and the ground eyelet in between. I understand I need to soak that in PBblaster or something similar, then remove the outer nut while holding the inner one still, because turning the entire screw could damage the pump motor for good. last time I looked at that I found a problem though, the inner nut is so thin that I have no wrench that will get on it. its blocked by the ground eyelet. any advice for how to do this? I'm hoping that if I remove the ground connection and clean it up really good that my problems will be gone. I'm just not sure how to get that thing off safely.

thanks,

 

Try a few other things first before you break the stud. If you take the EBTCM off you can make some resistance measurements to prove the ground is good. Here is the procedure:

DTC C1242 BPMV Pump Motor Circuit Open
Step
Action Value(s) Yes No
Step 2
1. Turn the ignition switch to the OFF position.
2. Using J 39200 DMM, measure resistance between the motor ground stud and a good chassis ground.
Is the resistance within the range specified in the Value(s) column? 0-2 ohms Go to Step 3
Go to Step 8

Step 3 1. Disconnect the EBTCM connector.
2. Remove the EBTCM from BPMV.
3. Inspect the EBTCM to BPMV connector for conditions which could cause intermittents, such as damage, corrosion, poor terminal contact, or presence of brake fluid. Refer to General Electrical Diagnosis in Wiring Systems.
Is connector OK and cavity free of brake fluid? -- Go to Step 4
Go to Step 5

Step 4
Using J 39200 DMM, measure resistance between BPMV internal connector terminal 8 and motor ground stud.
Is the resistance within the range specified in the Value(s) column? 0.2-10 ohms Go to Step 6
Go to Step 7

Step 5 1. If connector corrosion or damage is evident, replace BPMV and/or EBTCM as necessary.
2. If brake fluid is present, replace BPMV and EBTCM.
Is the replacement complete? -- Go to Diagnostic System Check - ABS
--
Step 6 Replace the EBTCM. Refer to Electronic Brake Control Module (EBCM) Replacement .
Is repair complete? -- Go to Diagnostic System Check - ABS
--
7 Replace the BPMV. Refer to Brake Pressure Modulator Valve (BPMV) Replacement .
Is repair complete? -- Go to Diagnostic System Check - ABS
--
Step 8 Repair open or high resistance in CKT 1250. Refer to Wiring Repairs in Wiring Systems.
Is repair complete? -- Go to Diagnostic System Check - ABS
--

Bill