Fuel Gauge Test: 240SX
- To check power source, turn the ignition switch to the "ON" position. Check voltage between terminal No. 24 and ground. See Figure. If there is 12 volts go to step 3).
- If there is not 12 volts, check for blown fusible link or fuse. Check harness continuity between battery terminal and combination meter. Check for malfunctioning ignition relay and/or ignition switch.
- Connect a jumper wire between terminal "B" and ground for less than 10 seconds. Fuel gauge should move smoothly from "EMPTY" to "FULL". If it does not, replace fuel gauge.
- If fuel gauge does move smoothly from "EMPTY" to "FULL", perform FUEL TANK SENDING UNIT TEST . If sending unit is okay, repair or replace sending unit harness.