Honda CR-V 1997 Service Manual page 594

Electrical Troubleshooting ('97 Model)
Troubleshooting Flowchart - Mainshaft Speed Sensor
• OBD II Scan Tool indicates Code
P0715.
• Self-diagnosis
~
indicator light
indicates Coda 15.
Check and record the freeze data
in case it is needed later for prob-
lem verification .
Check the mainshaft and counter-
shaft speed sensor installation.
and check the sensors for damage.
Are the mainshaft and counter-
shaft speed sensors installed
properly, and not damaged?
YES
Measure M.inshaft Speed Sansor
Resistance at the Sensor Con-
nector:
1. Disconnect the 2P connector
from the mainshaft speed sen-
sor connector.
2. Measure the resistance of the
ma inshaft speed sensor.
"-
Is the resistance 400 - 600
n?
./
YES
Check Main,haft Speed Sensor
for a Short Circuit:
1- Disconnect the B (25P) connec-
tor from the PCM.
2. Check for continuity between
body ground and 815 terminal
and the 814 terminal individu-
ally.
"-
Is there continuity?
./
NO
TO page 14-79
14-78
PossJble Cause
• Disconnected malnshaft speed sen-
sor connector
• Short or open in main.haft speed
sensor wire
• Faulty malnshaft speed sensor
NO
Reinstall or replace and recheck.
NO
Replace the mainshaft speed sen-
sor.
YES
Repair short in the wires between
the 815 and B14 terminals and
ttle mamshaft speed sensor.
NOTE : Code P07 1 51 15) on the PCM
doesn' t always mean there's an electrical
problem in the mainshaft or countershaft
speed sensor circuit; code P07 1 5('5) may
also indicate a mechanical problem in the
transmission. Check the freeze data with
a Honda PGM Tester. If the mainshaft
speed sensor rpm was 0, proceed with
this troubleshooting . If no', the probable
cause is
a
mechanical problem within the
transmission.
MAINSHAFT SPEED
SENSOR CONNECTOR
Terminal side of male terminals
PCM CONNECTOR B 125PI
NM IRED I
n
'i-~
3" 5 8
" 12 131415 1617 18
22 232425
NMSG IWHTI
n
Wire side of female terminals