Honda Civic Service Manual page 749

Electrical Troubleshooting ('96 - 98 Modelsl
Troubleshooting Flowchart - Mainshaft Speed Sensor
NOTE: Record all freeze data before you troubleshoot.
Po$ible Cause
. Disconnect€d mainshaft sD€ed
Sensor @nnoctot
. S h o r t o r o p e n i n m a i n s h a t t
sJt€ed s6nsoa wire
. Faulty mainshaft lpeed s6nso.
N O T E : C o d e P 0 7 1 5 ( 1 5 ) o n t h e P C M
doesn't always mean there's an electrical
problem in the mainshaft or countershaft
s p e e d s e n s o r c i r c u i t ; c o d e P 0 7 1 5 ( 1 5 )
may also indicate a mechanical problem
in the transmission.
MAINSHAFT SPEEO
SENSOR CONNECTOR
Terminal side of male terminals
PCM CONNECTOR B I25PI
. OBD ll Scan Tool indicates Code
m715.
. S e l f - d i r g n o s i 3 E
i n d i c a t o r
light indicstes Code 15.
Check the mainshaft and counter-
shaft speed sensor installation.
Are the mainshaft and countershaft
speed sensor installed properly?
Moasure Mainshaft Spoed Sgnsol
Rosistance at the Sensor Con-
n€ctor:
1. Disconnect the 2P connector
from the mainshaft speed sen-
sor connector.
2. Measure the resistance ot the
mainshaft speed sensor.
ls the resistance 400 600 O?
Check Mainshaft Sp6ed Sensor
for a Short Circuil:
1. Disconnect the B {25P) connec'
tor lrom the PCM.
2. Check for continuity between
body ground and 815 terminal
and the 814 terminal individu,
Repai. shon in the wi.os bstwoen
the 815 and 814 te.minals and
the mainshatt .Dood 3ensor.
ls there continuity?
T o p a g e 1 4 - 7 1
14-70
Wire side of female terminals