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Home >> Isuzu >> 1996 >> Oasis LS >> Repair and Diagnosis >> Electrical >> Gauges >> Instrument Panel >> Component Testing >> Fuel Gauge

Fuel Gauge

CAUTION: In the following tests, DO NOT  apply battery voltage to wire terminals, or fuel gauge will be damaged. Turn ignition off before fuel gauge pointer reaches "F" mark, or fuel gauge will be damaged.
  1. Turn ignition off. Check fuse No. 15 (10-amp) in dash fuse/relay box. Remove fuel tank access panel in luggage compartment. Disconnect 3-pin connector from fuel gauge sending unit.
  2. Connect voltmeter positive lead to Yellow/White wire and negative lead to Black wire. Turn ignition on. If reading is 5-8 volts, go to next step. If reading is not 5-8 volts, check for open circuit in Yellow, Yellow/White, Black or Black/White wire. Check for poor ground connections. If circuits and connections are okay, replace fuel gauge.
  3. Turn ignition off. Install jumper wire between Yellow/White wire and Black wire. Turn ignition on. Ensure fuel gauge pointer starts to move toward "F" mark on gauge. If fuel gauge pointer does not move, replace fuel gauge. If fuel gauge is okay, check fuel gauge sending unit. See procedures under FUEL GAUGE SENDING UNIT TEST  .
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