Honda ACCORD HYBRID 2005 Service Manual page 953

DTC P0731: Problem in 1st Clutch and 1st
Clutch Hydraulic Circuit
NOTE: Record all freeze data and review General
Troubleshooting Information (see page 14-4) before
y o u troubleshoot.
1. W a r m up the engine to normal operating
temperature (the radiator fan comes on).
2. Make sure that the transmission is filled to the
proper level, and check for fluid leaks.
3. Drain the ATF (see step 3 on page 14-231) t h r o u g h a
strainer. Inspect the strainer for metal debris or
excessive clutch material.
8. M o n i t o r the OBD status for P0731 in the DTCs/
Freeze Data in A/T M o d e Menu for a pass/fail.
Does the result indicate a fail?
Y E S — R e p a i r the 1st clutch, or replace the
t r a n s m i s s i o n . •
NO—Intermittent failure, the system is OK at this
t i m e . If the tester indicates NOT COMPLETE, return
to step 7 and recheck. •
Does the strainer have metal debris or excessive
clutch material?
Y E S — R e p l a c e the transmission. •
NO—Replace the ATF (see step 5 on page 14-231),
then go to step 4.
4. Measure the line pressure (see page 14-202).
Is the line pressure within the service limit?
Y E S — G o t o step 5.
NO—Repair the ATF p u m p and regulator valve, or
replace the transmission. •
5. Measure the 1st clutch pressure (see page 14-202).
Is the 1st dutch pressure within the service limit?
Y E S — G o t o step 6.
NO—Shift valves B and C are stuck. Repair the shift
valves and hydraulic circuit, or replace the
t r a n s m i s s i o n . •
6. Clear the DTC w i t h the HDS.
7. Test-drive the vehicle for several minutes under the
same conditions as those indicated by the freeze
data, or drive in 1st gear in the D position at speeds
over 10 m p h (16 km/h) for 20 seconds. S l o w d o w n
and stop the wheels.
14-117