Additional service when replacing
ECM
Description
When replacing ECM, the following procedure must be performed.
PROGRAMMING OPERATION
NOTE:
After replacing with a blank ECM, programming is required to write ECM
information. Be sure to follow the procedure
to perform the programming.
Work Procedure
1.CHECK ECM PART NUMBER
Che ...
P073F Unable to engage 1GR
Description
This malfunction is detected when the A/T does not shift into 1GR position as
instructed by TCM. This is not
only caused by electrical malfunction (circuits open or shorted) but by
mechanical malfunction such as control
valve sticking, improper solenoid valve operation, etc.
DTC ...