Honda ACCORD HYBRID 2005 Service Manual page 1020

Automatic Transmission
D T C T r o u b l e s h o o t i n g ( c o n t ' d )
DTC P1780: Problem in Shift Control System
NOTE: Record all freeze data and review General
T r o u b l e s h o o t i n g Information (see page 14-4) before
y o u troubleshoot.
1. Clear the DTC w i t h the HDS.
2. Test-drive the vehicle for several minutes in the D
position in all five gears. S l o w d o w n and stop the
wheels.
3. Retest-drive the vehicle for several minutes in the D
position in all five gears. S l o w d o w n and stop the
wheels.
4. Check for other DTCs indicated simultaneous w i t h
the code P1780.
NOTE: DTC P1780 means there is one or more A/T
DTCs about the shift control s y s t e m .
Are there other DTCs?
YES—Perform the t r o u b l e s h o o t i n g for the indicated
code(s).B
NO—Update the PCM if it does not have the latest
software, or substitute a k n o w n - g o o d PCM
(see page 14-7), then recheck. If the s y m p t o m /
indication goes away w i t h a k n o w n - g o o d PCM,
replace the original PCM.H
14-184