General Information

Automatic Transaxle

P0605 Internal Control Module Read Only Memory (ROM) Error - General Information

Component Location





General Description

TCM is activated by power supply. Signals from several sensors, such as ATFS and APS, is inputted to TCM. Comparing inputted signals with control LOGIC saved at micro controller and EEPROM, TCM controls Transmission as actuating solenoids. To guarantee accurate control, TCM performs SELF TEST, DIAGNOSIS of several sensors and actuators. And if serious trouble which affects vehicle performance occurs, TCM sets DTCs. At certain cases, TCM inhibits shifting in order to prevent dangerous situation due to incorrect control.

DTC Description

TCM detects internal RAM value by itself. If the value TCM wrote on RAM differs from the value TCM read, Malfunction can be detected.
(MIL ON : 2 driving Cycle)

DTC Detecting Condition





CAUTION:
1. The function with the higher priority will always take precedence. However, a low-priority is not overruled by a higher priority function.
2. Functions from different priority categories can also run in parallel. It is important to note which function will take precedence in this case.
3. In such an event it is possible for a substitute function with low priority not be carried out if a second, higher-priority function is present. This has been taken into account when compiling the priority list and is international.
4. The mechanical emergency run function must always have the highest priority, since from the electrical standpoint it is the only safe condition.