Honda Civic Service Manual page 941

Ftom page 14 262
ls there battery voltage?
Measure Powet SUPPIY Ci.cuit
Voltage:
1. Turnthe ignition switch ON (ll)
2. Measure the voltage between
t e r m i n a l s A 1 2 a n d A 1 3 a n d
b e t w e e n t e r m i n a l s A 2 5 a n d
426.
Repair open or short in the wire
between the A'12 andlor Ms ler-
minrls and the under-dash fuse
D O X ,
Measure D IND Voltage:
1. Turn the ignition switch OFF
2. connect the A (26P) connec
tor to the TcM.
3. Connect a digkal multitester
to the A20 and A'13 or A26 ter
minals.
4. Turn the ignition switch ON (ll),
and make sure that the voltage
is available for two seconds.
C h e c k t o r o p o n i n t h e w i r e
between the A20 l6rminal and
the gaug€ assembly. It the wite
is OK, check tor a faultY ipl indi-
calor light bulb or a faulty gauge
assembly prir ed circuit boatd.
Check D INO for an Shott Circuit:
1. Turn the ignition switch OFF
2 . D i s c o n n e c t t h e A ( 2 6 P ) c o n -
nector from the TCM.
3. Check for continuity between
the A20 terminal and the No. I
terminal of the gauge assem-
bly connector (see section 23).
Bepair open in the wire between
the A20 terminal and the gauge
assembly.
Check tor looso TCM connecto.s.
C h e c k t h e A / T g e . r P o s i t i o n
switch. lf nec6ssary, substitute a
known-good TCM and r€check
BLK/WHT I
r
2
a
7
1 0
1 1
12 13
1 4
t 5 1 6 1 7
20 23 25 26
BLK/WHT
A
I
I
TCM CONNECTOR A I26P)
Wire side of female terminals
TCM CONNECTOR A (25P}
BLK
BLK
GRN/BLK
1 2
a 5
8 9
1 0
1 1 12
1 3
1 l 1 5 1 6 1 7
20
23
25
26
o
GRN/BLK
GAUGE ASSEMBLY
14P CONNECTOR
a
5
7
8 9 1 0 1 1
1 2
1 4
GRN/BLK
W i r e s i d e o f f e m a l e t e r m i n a l s