Mechanical Problem In Hydraulic Control System - Honda 2002 Accord Manual

Automatic Transmission
DTC Troubleshooting (cont'd)
DTC P0780: Mechanical Problem in Hydraulic
Control System for Shift Solenoid Valve A
and A/T Clutch Pressure Control Solenoid
Valves A and B, or Problem in Hydraulic
Control System
NOTE:
• Record all freeze data before you troubleshoot.
• Keep replacement solenoid valves on hand:
- Torque converter clutch solenoid valve/shift
solenoid valve A
- A/T clutch pressure control solenoid valves A and B
1. Check whether the OBD II scan tool indicates
another code.
Does the OBD II scan tool indicate another code?
Y E S — Perform the Troubleshooting Flowchart for
the indicated Code(s). Recheck for code P0780 after
troubleshooting. •
N O - G o t o step 2.
2. Turn the ignition switch OFF.
3. Replace the torque converter clutch solenoid valve/
shift solenoid valve A (see page 14-106), and the
A/T clutch pressure control solenoid valves A and B
(see page 14-109).
4. Reset the PCM memory by removing the BACK UP
fuse in the passenger's under-dash fuse relay box
for more than 10 seconds.
5. Drive the vehicle for several minutes in 1st, 2nd,
3rd, and 4th gears in H position.
6. Recheck for code P0780.
Does the OBD II scan tool indicate code P0780?
Y E S - R e p l a c e the transmission a s s e m b l y . •
NO —The problem has been c o r r e c t e d . *
14-90