Honda Civic 1998 Service Manual page 1224

Fuel Gauge
4 .
Gauge/Sending Unit Test
!@s@
Do nor smoKe wnre worxrng on tne ruet
system, Keep open flame away from yout work area.
NOTE: Refer to page 23-117 for the fuel gauge system
crrcutl.
1. Check the No. 25 (7.5 A) fuse in the under-dash fuse/
relay box before testing.
2. Remove the access panel from the floor.
ACCESS PANEL
D i s c o n n e c t t h e 3 P c o n n e c t o r f r o m t h e f u e l g a u g e
s e n d i n g u n i t .
Connect the voltmeter positive probe to the No. 2
terminal and the negative probe to the No. 1 termi-
n a l , t h e n 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 ) .
There should be between 5 and 8 V.
. lf the voltage is as specified, go to step 5.
.
lf the voltage is not as specified, check for:
- an open in the YEL/BLK or BLK wire.
-
p o o r g r o u n d ( G 5 5 2 ) .
Turn the ignition switch OFF.
Attach a jumper wire between the No. 1 and No. 2
t e r m i n a l s , t h e n 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 ) .
5 .
6.
female terminals
23-126
7 .
Check that the pointer of the fuel gauge starts mov-
ing toward the "F" mark.
CAUTION: Turn the ignition switch OFF betore the
pointer reaches "F" on the gauge dial. Failure to do
so may damage the tuel gauge.
NOTE| The fuel gauge is a bobbin (cross-coil) type,
hence the fuel level is continuously indicated even
w h e n t h e i g n i t i o n s w i t c h i s O F F , a n d t h e p o i n t e r
moves more slowly than that of a bimetal type.
. lf the pointer of the tuel gauge does not move at
a l l , r e p l a c e t h e g a u g e .
. lf the gauge is OK, inspect the fuel gauge send
i n g u n i t .
Remove the fuel gauge sending unit as shown.
Japan-produced
FUEL GAUGE
SENDING UNIT
IJSA. Canada-Droduced
FUEL GAUGE
SENDING UNIT
8.