michaelgreen Posted March 22, 2012 Report Share Posted March 22, 2012 I've recently purchased a '98 Seville STS, and have a couple of problem codes to try to eliminate. I initially had a "change brake pads" display, but with assistance from this forum, I was able to locate wiring for the front sensors, which had been cut from the sensor and tucked behind pipes on the front suspension. As a temp. fix, I joined the two wires together to eliminate the error display, and will order new sensors ASAP. That cleared the brake error display, but I still have another, that I suspect is brake related. It is a code of ABS 1285. I would appreciate any help with diagnosing the source of the error and fixing it. Thanks. Mike. Link to comment Share on other sites More sharing options...
JimD Posted March 22, 2012 Report Share Posted March 22, 2012 ....but I still have another, that I suspect is brake related. Why do you suspect it is brake related? It is a code of ABS 1285. Do you mean C1285? Do you have a SERVICE STABILITY SYS message on the DIC? Jim Drive your car. Use your cell phone. CHOOSE ONE ! Link to comment Share on other sites More sharing options...
Cadillac Jim Posted March 22, 2012 Report Share Posted March 22, 2012 C1285 Lateral Accelerometer Sensor Circuit Malfunction This code is thrown from the EBTCM when there is a wiring problem to one of the accelerometers. It *will* throw ABS and stability system codes. It may throw traction control codes. The sensor is connected to the EBTCM, so it may be a bad connection in the EBTCM connector, and that is where I would look. The wire is BLU. Table: P1285 Accelerator Pedal Position Sensor 3 Circuit This is a wiring or sensor problem on the throttle body. It might throw an ABS code. I believe that the TPS sensor goes right to the PCM. I would look at the TPS sensor if the code is P1285. -- Click Here for CaddyInfo page on "How To" Read Your OBD Codes-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data -- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC Yes, I was Jims_97_ETC before I changed cars. Link to comment Share on other sites More sharing options...
michaelgreen Posted March 23, 2012 Author Report Share Posted March 23, 2012 ....but I still have another, that I suspect is brake related. Why do you suspect it is brake related? It is a code of ABS 1285. Do you mean C1285? Do you have a SERVICE STABILITY SYS message on the DIC? Link to comment Share on other sites More sharing options...
michaelgreen Posted March 23, 2012 Author Report Share Posted March 23, 2012 Yes, I do have a "Service Stability System" message on the DIC together with the ABS1285. Does that narrow the problem down? I have no other codes. Thanks for the table Jims_97. I will look for the EBTCM connector tomorrow and go from there. Mike Link to comment Share on other sites More sharing options...
JimD Posted March 23, 2012 Report Share Posted March 23, 2012 Yes, I do have a "Service Stability System" message on the DIC together with the ABS1285. Your C1285 code points directly at the lateral accelerometer sensor circuit. Your lateral accelerometer is located under the rear seat bottom cushion on the LH side. See item #4 in the attached picture. I would start there by checking the connector for oxidized contacts (use a contact cleaner to remove invisible oxidation) and/or wire harness damage. Given your experience with previous owner's short cuts in your brake pad wear system, there is no way to know what you might find. Jim Drive your car. Use your cell phone. CHOOSE ONE ! Link to comment Share on other sites More sharing options...
michaelgreen Posted March 23, 2012 Author Report Share Posted March 23, 2012 Thanks JimD, you were spot on. I checked the wiring to the lateral accelerometer and found that the wires had been chewed through by (presumably) mice. There was a nest of material scraps just to the side of it. I trimmed the wires, re-soldered and plugged in. NO MORE ERRORS. Yippee!!!!! Thanks to all. Mike. Link to comment Share on other sites More sharing options...
Texas Jim Posted March 23, 2012 Report Share Posted March 23, 2012 Glad you got it fixed.... Link to comment Share on other sites More sharing options...
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