Honda Civic Service Manual page 896

I
Vehicle Speed Signal Circuit Troubleshooting
Special Tools Required:
Test Harness 07LAJ-PT3020A
Before testing, inspect the No. 4 (10A) and No. 10 (7.5A)
fuses in the under-dash fuse/relay box.
1. Disconnect the 3P connector from the vehicle
speed sensor (VSS) {A).
Connect the test harness only to the engine wire
harness.
Connect the RED test harness clip (B) to the positive
probe of an ohmmeter. Cover the white (C) and
green {D) test harness leads with protective tape (E).
Check for continuity between the RED test harness
c l i p a n d b o d y g r o u n d ,
ls there continuity?
YES Go to step 5.
N O R e p a i r o p e n i n t h e B L K w i r e b e t w e e n t h e V S S
a n d G 1 0 1 . I
3 .
4 .
5. Connect the WHT test harness cliD (B) to the
positive probe of a voltmeter, and connect the RED
test harness clip (C) to the negative probe.
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 ) .
l e t h a r a h 2 l t a r v v ^ l t a d a ?
Y E S - G o t o s t e p 7 .
NO Repair open in the BLK,/YEL wire between the
VSS and the under-dash fuse/relay box.l
Disconnect the WHT test harness clip (B).
C o n n e c t t h e G R N t e s t h a r n e s s c l i p { D ) t o t h e
positive probe of a voltmeter.
Is there 5 V or more?
YES- Go to step 9.
NO Repair short or open in the BLUMHT or WHT/
GRN wire between the VSS and the cruise control
u n i t , o r t h e E C M . I
(cont'd)
7 .
8 .
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