Honda Civic Service Manual page 363

Fuel Supply System
Fuel Gauge Sending Unit Test
Special Tools Required
Fuel sender wrench 07XAA-001010A
NOTE; For the fuel gauge system circuit diagram, refer
to the Gauges Circuit Diagram (see page 22-58||.
1 . C h e c k t h e N o . 1 0 f U E T E R { 7 . 5 A ) f u s e i n t h e u n d e r -
dash fuse/relay box before testing.
2. Do the gauge drive circuit check (see page 22-56|l.
' lf the fuel gauge needle sweeps from minimuni
to maximum position and then returns to the
m i n i m u m p o s i t i o n . t h e g a u g e i s O K . G o t o s t e p 3 .
. lf the fuel gau ge need le does not sweep from
m i n i m u m t o m a x i m u m p o s i t i o n p o s i t i o n a n d
then return to the minimum position, replace the
gauge assembly and retest.
3 . T u r n t h e i g n i t i o n s w i t c h O F F .
4. Remove the rear seat cushion {see page 20-80).
5. Remove the access panel (A)from the floor.
6. Disconnect the fuel pump 5P connector {B).
-ztr
1 1 - 1 5 6
7. Measure voltage between fuel pump 5P connector
terminals No. 1 and No. 2 with the ignition switch
ON (ll). There should be battery voltage.
. lf the voltage is as specified, go to step 8.
. l f t h e v o l t a g e i s n o t a s s p e c i f i e d , c h e c k f o r :
- a n o p e n i n t h e Y E U B L K o r B L K w i r e .
- p o o r g r o u n d ( G 5 5 1 ) .
FUEL PUMP 5P CONNECTOR
Wire side of female terminals
Turn the ignition switch OFF. Remove the No. 9
BACK UP (7.5A)fuse from the under-hood fuse/
relay box for at least 10 seconds, lhen reinstall it.
Install a 2 Q resistor between fuel pump 5P
connector lerminals No. 1 and No. 2, then turn the
i g n i t i o n s w i t c h O N ( l l ) .
FUEL PUMP 5P CONNECTOR
- V V V -
2 9 RESISTOR,
=-a
{Y
\
//,
(elrt \
\ 4
5 /
{YEL/BLK)
Wire side of female terminals