Vehicle Speed Sensor - Honda Civic Service Manual

PGM-FI System
Vehicle Speed Sensor (VSSI ('96 - 98 Models,'99 - 00 D16Y5 engine with M/Tl
@
The scan tool indicates Diagnostic Trouble Code (DTC) P0500: A malfunction problem in the Vehicle Speed
Sensor (VSS) circuit Iexcept A!/T (D16Y7, D16Y8 engine)1.
The scan tool indicates Diagnostic Trouble Code (DTC) P0501: A range/performance problem in the Vehicle
Speed Sensor (VSS) circuit [A,rT {D16Y7, D16Y8 engine)].
ECM/PCM CONNECTORS
A {32P}
LG.t
VSS IBLU/WHT}
Wire side ot temale terminals
L G I
( B R N / 8 L K }
The MIL has been reDorted on.
DTC P0500 or P0501 is stored.
Problem verification:
1- Test drive the vehicle.
2. Check the vehicle speed with
the scan tool.
Intermittent tailure, system is OK
at this time. Check tor Door con-
nections or loose wires at C117
{VSSland ECM/PCM.
ls the correct speed indicated?
Check for an open in the ECM/
PCM:
1. Turn the ignition switch OFF.
2. Elock the rear wheels and set
the parking brake.
3. Jack up the front of the vehicle
a n d s u p p o r t i t w i t h s a f e t y
stands.
4. Turn the ignition switch ON (ll).
5. Block the right tront wheel and
s l o w l y r o t a t e t h e l e f t f r o n t
6, Measure voltage between the
E C M / P C M c o n n e c t o r t e r m i -
nals C18 and A9.
Subslitute a known-good ECM/
PCM and recheck. lf symptom/
indic.tion goes away, replace the
orisinal ECM/PCM.
Does the voltage pulse 0 V
a n d 5 V ?
Check tor a short in ihe ECM/
PCM:
1. Turn the ignition switch OFF.
2 . D i s c o n n e c t t h e E C M / P C M
connector C (31P).
3. Turn the ignition switch ON {ll).
4 . B l o c k t h e r i g h t f r o n t w h e e l
and slowly rotate the left front
5. Measure voltage between the
ECM/PCM connector terminals
C18 and A9.
Substitute a known-good
ECM/
P C M a n d r e c h e c k . l I s y m p t o m /
i n d i c a t i o n g o e s a w a y . r e p l a c e
the original ECM/PCM.
D o e s t h e v o l t a g e p u l s e 0 V
a n d s V ?
-
R e p a i r s h o r t i n t h e w i r e
betwGen ECM/PCM {C18} end
vss, TcM.
-
R e p a i r o p e n i n t h e w i r e
between ECM/PCM {Cl8} and
vss.
-
l f w i r e i s O K , t e s t t h e V S S
lsee section 23).
{BRN/BLK}
2 3 9 l 0 l t
12
1 6 1 1
t 8 t 9 20 23 21
2A 29 30
c {31P}
I
3
8 1 9
1 o
t l 1 2 i a l r 5 i 6 l 1 0 ./
I 2
3
5 6
a
9 l 0 1 1
12 l 3 l 5 t 6
1 t
l 8 t 9
20 22 2a
27
20
29
30
1
2
9
1 0
t 2 l
13l
. l
7
I l ,
/ 1,/
2 3 1
r . l
s l t.
, ) ,
r l
L
VSS {BLU/WHT}
1 1 - 1 7 6