Acura NSX 1991 Manual page 795

Main Menu
Fuel Gauge
Gauge Test
1. Before testing, check the No. 5 (15 A) fuse in the
under-dash fuse box.
2. Remove the rear bulkhead panel behind the driver's
seat, then remove the access panel.
3. Disconnect the 3-P connector from the fuel gauge
sending unit.
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Table of Contents
ACCESS PANEL
3-P CONNECTOR
4. Connect the voltmeter positive probe to the B
(YEL/WHT) terminal and the negative probe to the
C (BLK) terminal, then turn the ignition switch ON
(II). There should be between 5 and 8 V.
• If the voltage is as specified, go to step 5.
• If the voltage is not as specified, check for:
- An open in the YEL, YEL/WHT or BLK wire.
- Poor ground (G403).
5. Turn the ignition switch OFF. Connect a jumper wire
between the B (YEL/WHT) and A (BLK) terminals.
CAUTION: Do not apply battery voltage to the ter-
minals; it will damage the fuel gauge.
6. Turn the ignition switch ON (II). Check that the
pointer of the fuel gauge starts moving toward the
"F" mark.
CAUTION: Turn the ignition switch OFF before the
pointer reaches the "F" mark on the gauge dial; if
you don't, you may cause damage to the fuel gauge.
• If the pointer of the fuel gauge does not move at
all, replace the gauge.
• If the fuel gauge is OK, check the sending unit.