Honda ACCORD HYBRID 2005 Service Manual page 977

DTC P0843: Open in 2nd Clutch Transmission
Fluid Pressure Switch Circuit, or 2nd Clutch
Transmission Fluid Pressure Switch Stuck
OFF
NOTE:
• Record all freeze data and review General
Troubleshooting Information (see page 14-4) before
y o u troubleshoot.
• This code is caused by an electrical circuit p r o b l e m
and cannot be caused by a mechanical p r o b l e m in the
transmission.
1. Clear the DTC w i t h the HDS.
2. Start the engine, and w a r m it up to normal
operating temperature (the radiator fan comes on).
3. Shift into the 2 position w h i l e pressing the brake
pedal, and verify w i t h the HDS in the A/T data list
that the SHIFT MAP NUMBER indicates 2nd.
4. Check the 2nd PRES SWITCH signal w i t h the HDS in
the A/T data list.
Is the 2nd PRES SWITCH ON?
Y E S — G o t o step 5.
N O — G o t o step 7.
5. Drive the vehicle in the 2 position for more than
5 seconds, then shift the shift lever into the D
position, and drive in 4th gear for more than
5 seconds. S l o w d o w n and stop the wheels.
6. M o n i t o r the OBD status for P0843 in the DTCs/
Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate a fail?
Y E S — G o t o step 7.
NO—Intermittent failure, the system is OK at this
t i m e . Check for poor connections or loose terminals
at the 2nd clutch transmission f l u i d pressure switch
and the PCM. If the tester indicates NOT
COMPLETE, return to step 5. and recheck. •
7. Turn the ignition switch OFF.
8. Disconnect the 2nd clutch transmission fluid
pressure switch connector.
9. Turn the ignition switch ON (II).
10. Measure the voltage between the 2nd clutch
transmission fluid pressure switch connector
terminal and body g r o u n d .
2ND C L U T C H T R A N S M I S S I O N FLUID
P R E S S U R E SWITCH C O N N E C T O R
1
| 0 P 2 S W (BLU/BLK)
X)
W i r e side of f e m a l e t e r m i n a l s
Is there about 5 V?
YES—Replace the 2nd clutch transmission fluid
pressure switch (see page 14-224), then go to step
12.
NO—Go to step 11.
(cont'd)
14-141