Mitsubishi Eclipse II technical information manual page 189

text version of content this owner's manual page from owners manual to the vehicle Mitsubishi Eclipse, year of production 1995 - 1999:

2-76 POWER TRAIN - Automatic Transaxle (3) Self Diagnostics Another feature of the TCM is that it helps the techni- major electronic circuits in the TCM and/or its input cian find a problem within a malfunctioning transaxle sensor and output device network, a two digit numer- or control system. It can do this through self-diagnos- tics. When something goes wrong with any of theic diagnostic trouble code is put into memory. (4) Diagnostic Trouble Codes In addition to sensing electrical malfunctions, the up to a diagnostic connector, located under the TCM can also detect some hydraulic and mechanical instrument panel. malfunctions that also produce diagnostic trouble To retrieve diagnostic trouble codes, it is necessary codes. Each code represents a different malfunction.to follow the procedures outlined in the Powertrain In order to read the diagnostic trouble codes, theDiagnostic Procedures manual for this transaxle. technician must hook-up a special diagnostic scanThe TCM can retain up to seven diagnostic trouble tool, called a scan tool (MUT-II). It will be hookedcodes in memory at one time. (5) Default or Limp-In Mode Another feature of the TCM is the ability to protect the transaxle from potentially hazardous.operation,No matter what forward gear is selected, the vehicle stays in second gear. Park, Neutral, Reverse, and when certain problems arise. The TCM constantly Second gear are the only gears that the transaxle monitors its systems. If it senses a problem, it putswill operate in when in the limp-in mode. The idea a diagnostic trouble code in memory and shuts downbehind limp-in mode is to prevent the customer from the electronic controls. When this happens, it isbeing stranded and to provide them the ability to referred to as default or limp-in. Not all diagnosticdrive in (or limp-in) for service. As mentioned previously in the “Component Identifi- trouble codes put the transaxle into default or limp-in cation” section, the TCM has the job of controlling mode. Only the codes that indicate a problem that four solenoids in the solenoid assembly. To do this, could potentially cause further transaxle internal the TCM uses its programming and information from damage or hazardous operation. If the TCM fails several sensors. Some of the sensors are wired for some reason, the transaxle automatically goes into default. directly to the TCM and other sensor signals come from other electronic components across the CCD When the transaxle goes into the default mode, it automatically shifts to second gear when in anybus. The CCD bus is simply a communication link forward gear selection and stays there. When thebetween the TCM and other electronic components ignition key is turned “off” and then back “on” again,on the vehicle. The communication link is made the TCM resets itself to operate normally until itthrough two twisted wires. senses the fault and again goes into second gear.

owners manual Mitsubishi Eclipse

owners manual Mitsubishi Eclipse - year of production: 1995, 1996, 1997, 1998, 1999 - Mitsubishi Eclipse II technical information manual EN