Honda ACCORD HYBRID 2005 Service Manual page 975

DTC P0842: Short in 2nd Clutch Transmission
Fluid Pressure Switch Circuit or 2nd Clutch
Transmission Fluid Pressure Switch Stuck
ON
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. Check the 2nd PRES SWITCH signal w i t h the HDS in
the A/T data list w h e n not in 2nd gear.
Is the 2nd PRES SWITCH OFF?
Y E S — G o t o step 3.
N O — G o t o step 6.
3. Start the engine and w a r m it up to normal
operating temperature (the radiator fan comes on).
4. 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.
5. M o n i t o r the OBD status for P0842 in the DTCs/
Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate a fail?
YES—Go to step 6.
NO—Intermittent failure, the system is OK at this
t i m e . Check the OP2SW (BLU/BLK) w i r e for an
intermittent short to ground between the 2nd clutch
transmission fluid pressure switch and the PCM. If
the tester indicates NOT COMPLETE, return to step
3 and recheck. •
6. Turn the ignition switch OFF.
7. Disconnect the 2nd clutch transmission fluid
pressure switch connector.
8. Turn the ignition switch ON (II).
9. Check the 2nd PRES SWITCH signal w i t h the HDS in
the A/T data list.
Is the 2nd PRES SWITCH OFF?
YES—Replace the 2nd clutch transmission fluid
pressure switch (see page 14-224), then go to step
14.
N O — G o t o step 10.
10. Turn the ignition switch OFF.
11. J u m p the SCS line w i t h the HDS.
12. Disconnect PCM connector C (22P).
13. Check for continuity between PCM connector
t e r m i n a l C11 and body g r o u n d .
PCM C O N N E C T O R C (22P)
1 2
U
3 4 5 6 7
8 9 10 11 12 13 14 15
16 17 18 1 9 20
n
21 22
O P 2 S W ( B L U / B L K )
W i r e side of f e m a l e t e r m i n a l s
Is there continuity?
YES—Repair a short to g r o u n d in the w i r e between
PCM connector terminal C11 and the 2nd clutch
transmission fluid pressure switch, then go to step
14.
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. •
(cont'd)
14-139