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Fuel Gauge Reads Inaccurate Test

  1. Disconnect fuel gauge sender connector. Turn ignition switch to RUN position. Clip one lead of Fuel Gauge Tester (J-33431) to Purple wire of fuel sender connector. Clip remaining lead to Black/White, Black/Yellow or Black wire of fuel sender connector.
  2. Set resistance dials of tester first to zero ohms, then set to 90 ohms. Gauge pointer should indicate empty, then full, respectively. If gauge responds as specified, replace fuel gauge sender. If gauge does not respond as specified, check Purple and Black/Yellow, Black/White or Black wire for high resistance. Also check printed circuit for high resistance.
  3. If high resistance is present, repair or replace wires or circuit board as necessary. If high resistance is not present, check fuel gauge connections. If fuel gauge connections are okay, replace IPC. If connections are not okay, repair as necessary.
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