Honda Prelude 1993 Service Manual page 1217

FuelGauge
Gauge Test
NOTE: Reter to page 23- 1 29 for the circuit diagram of
the fuel gauge.
1. Check the No. 13 {1O A) fuse in the under-dash
tuse/relay box before testing.
2. Open the trunk,
3.
Remove the fuel tank access panel.
4.
Disconnect the 5-P connector from the fuel gauge
sending unit.
CONNECTOB
5. Connect the voltmeter positive probe to the
YEL/GRN terminal and the negative probe to body
ground, then tu.n the ignition switch ON.
There should be between 5 and 8 V.
a lf the voltage is as specitied, go to step 5.
a lJ the voltage is not as specitied, check for:
- An open in the YEL or YEL/GRN wire.
- Loose or disconnected terminals.
- Faulty tuel gauge.
YEL/GR
-L
I r t,---t I
Fi!.-1---1
I l l t I
'--'-r---
YEUWHT
7 .
Turn the ignition switch OFF. Connect a iumper
wire between the YEL/GRN and YEL/WHT
terminals.
CAUTION: Do not connect power and ground to
th€ lerminals; it will damage th6 luel gaugs.
Turn the ignition switch ON, and check if the gauge
indicates
"F"
CAUTION: Disconn€ct the iumpor rYire as soon as
the gaugs r6aches
"F", or you will damags the
gau9e.
a ll the fuel gauge does not work at all, replace it.
a lf the fuel gauge is OK, inspect the sending unit
23-139