Fuel Gauge Test

Turn ignition switch to OFF position. Check No. 25 (7.5 amp) fuse in under-dash fuse box. Replace fuse if necessary. Remove rear seat. Remove fuel pump access cover. Disconnect 3-pin connector from fuel gauge sending unit. Connect positive DVOM lead to Yellow/White wire and negative DVOM lead to Black/White wire. Turn ignition switch to ON position and measure voltage. If voltage is 5-8 volts, go to next step. If voltage is not 5-8 volts, check for poor ground connection or open in Blue/White, Yellow/White, or Black/White wires. See WIRING DIAGRAMS .
CAUTION: Failure to turn ignition switch to OFF position before needle reaches "F" mark may damage fuel gauge.
Turn ignition switch to OFF position. Connect jumper wire between Yellow/White wire and Black/White wire. Turn ignition switch to ON position. Gauge needle should start moving toward "F" mark. Turn ignition switch to OFF position before gauge needle reaches "F" mark on gauge.
If wiring is okay and fuel gauge needle does not move, replace fuel gauge. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. If fuel gauge is okay, test fuel gauge sending unit. See FUEL GAUGE SENDING UNIT TEST .