Subaru Impreza 2003 Service Manual page 1697

9. Clear Memory Mode
A: OPERATION
1. WITHOUT SUBARU SELECT MONITOR
Current DTC shown on display are cleared by turn-
ing the ignition switch to OFF after conducting on-
board diagnostics operation. Previous DTC, how-
ever, cannot be cleared since they are stored in the
TCM memory which is operating on back-up power
supply. These DTC can be cleared by removing the
specified TCM connector for at least two minutes.
CLEAR MEMORY:
Remove the TCM connector (B56) for at least
two minutes.
• TCM connector (B56) is located in the line to
memory back-up power supply of TCM. Removal of
this connector clears the previous DTC stored in
TCM memory.
• Be sure to remove TCM connector (B56) for at
least the specified length of time. Otherwise, the
DTC may not be cleared.
2. WITH SUBARU SELECT MONITOR
Refer to Subaru Select Monitor for information
about how to clear DTC.
<Ref. to 4AT-23, CLEAR MEMORY MODE, OP-
ERATION, Subaru Select Monitor.>
CLEAR MEMORY MODE
4AT-27
AUTOMATIC TRANSMISSION (DIAGNOSTICS)