Question about Saturn L300
Transmission control system malfunction light comes on.
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Posted on Jan 02, 2017
Dave, The P0700 code is a generic fault code indicating the the TCM (transmission control module) has recognized a problem and the P0755 is the indicated problem. I'd recommend you check your transmission external electrical connector for water intrusion and corrosion at the terminals by disconnecting the connector. If nothing appears wrong, I'd then recommend you drop the lower transmission pan and take a look at the residue deposit that is laying on the bottom of the pan. You should only see a relativily minor amount of grayish, black clutch material residing there. Pay particular attention for a gross amount of this or any large particular material, including any metal, either filings or chunks, or any brass or aluminum. If this checks out to be fairly clean, then I'd recommend you replace that "B" solenoid (2-3 shift solenoid) and have the trans. pan and filter replaced.; I'd also highly recommend you have the trans flushed for anyother particular matter that may reside internally inside the transmission. You'll have to have the codes cleared and the transmission relearned for shift feel, at that point.
Posted on Jan 08, 2009
on the fire wall . be carful you replace the tcm there is no bringing it back if you smoke that one to . remeber check for why the tcm failed!. unless you got money to burn i do not. good luck kdc744
Posted on Feb 08, 2009
(DTC) CODE # P0700....Transmission Control System (MIL Request)
Translation: Transmission Control Module (TCM) Malfunction or Failure.
P0700 Information Code
The Transaxle Control Module (TCM) monitors the malfunction of sensors and actuators relating to transaxle control. If any malfunction is detected, the TCM informs the PCM by sending a signal (P0700 code). P0700 means that a code has been set in the TCM.
This code is for information ONLY. If this code is present, check for transaxle codes.
P1776: Solenoid Switch Valve Latched in Low/Reverse Position. The TCM monitors the L/R solenoid to ensure that the fluid transfer happens. It uses a Pressure switch to verify this. Usually this code is set by a switch that is stuck or a solenoid that is not mechanically operating.
A transmission shop would be better suited for this type of work.
Posted on Apr 11, 2009
check all the fuses before you do anything else. After all a fuse provides power to the electronic box that controls the transmission. Other than that I would not advice on a more complicated troubleshooting since there is no way for you to test a bad transmission computer, even mechanic shops don't know how to test them. The only thing they would do is slap a known good one and see what happens.
Posted on Dec 27, 2009
THIS IS A DEALERSHIP FIX.CODE MEAN TRANSMISSION CONTROL MODULE REQUESTED MIL ILLUMINATION.IF YOU HAVE PROBLEM WITH TRANSMISSION MODULE IF REPLACED IT HAS TO BE REPROGRAM BY THE DEALERSHIP.
Posted on May 17, 2010
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