Acura 2002 RSX Service Manual page 637

DTC P0840: Problem in 2nd Clutch
Transmission Fluid Pressure Switch Circuit
NOTE: Record allfreeze data and review General
Troubleshooting Inlormation (see page 14-3) before
you troubleshoot.
'1.
Disconnect the 2nd clutch transmission fluid
pressure switch.
2 . T u r n t h e i g n i t i o n s w i t c h O N ( l l )
3. Measure the voltage between PCM connector
t e r m i n a l C 1 3 a n d b o d y g r o u n d
PCM CONNECTOR C (22PI
oP2SW {BLU/REO)
Wire side of female terminals
ls there about 5 V?
YES Go to step 4.
NO Check for shortto ground in the wire between
PCM connector terminal C l3 and the 2nd clutch
transmission fluid pressure switch lf wire is OK,
update the PCM if it does not have the latest
software, or substitute a known-good PCM. then
recheck (see page 14-7). lf the symptom/indication
goes away with a known-good PCM, replace the
o r i g i n a l P C M , I
l
2
3 5 6 1
6
I
t0 2
13
l 4
4. Measure the voltage between the 2nd clutch
transmission fluid pressure switch connector
terminal and body ground.
2ND CLUTCH TRANSMISSION FLUID
PRESSURE SWITCH CONNECTORS
Wire side of female terminal
ls there about 5 V?
YES Go to step 5.
NO Repair open in the wire between PCM
connector terminal C13 and the 2nd clutch
transmission fluid pressure switch l
T u r n t h e i g n i t i o n s w i t c h O F F .
Measure the resistance between the 2nd clutch
transmission fluid pressure switch connector
t e r m i n a l a n d b o d y g r o u n d .
2NO CLUTCH TRANSMISSION FLUID
PRESSURE SWITCH CONNECTOR
Is there 40 M Q or more?
NOT E: An open circuit is greater than 40 M Q
YES Go to step 7.
NO Replace the 2nd clutch transmission fluid
pressure switch.l
F
l r l
-l-
o
I
5 .
6.
It.tI
t--l
I
o
I
T e r m i n a l s i d e o l m a l e t e r m i n a l s
(cont'd)
1 4- 10 5