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Home >> Lincoln >> 1991 >> Town Car Cartier >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel - Electronic >> Testing >> Pinpoint Tests >> Test FE, CS Displayed, Gauge Blanks Out Fuel Tank Symbol & Lights Top Two & Bottom Two Bars Of Fuel Gauge

Test FE, CS Displayed, Gauge Blanks Out Fuel Tank Symbol & Lights Top Two & Bottom Two Bars Of Fuel Gauge

  1. Checking Fuel Tank Sending Unit Wiring At Instrument Cluster: Disconnect negative battery cable. Remove instrument cluster. See INSTRUMENT CLUSTER R & I  .
  2. Using ohmmeter, measure resistance between instrument cluster connector C2-1, pin No. 2 (Yellow/White wire) and connector C2-1, pin No. 4 (Pink/Orange or Black/Light Blue wire) of wiring harness.
  3. Resistance should be greater than 5 ohms (normally 11-168 ohms). If resistance is within specifications, replace instrument cluster. Install door pillar sticker to indicate instrument cluster has been replaced. If resistance is not within specifications, check for short in wiring harness or fuel tank sending unit.
  4. Checking Fuel Tank Sending Unit Wiring: Disconnect negative battery cable. Lower fuel tank for access to fuel tank sending unit. Disconnect electrical connector at fuel tank sending unit.
  5. Using ohmmeter, measure resistance between instrument cluster connector C2-1, pin No. 2 (Yellow/White wire) and connector C2-1, pin No. 4 (Pink/Orange or Black/Light Blue wire) of wiring harness.
  6. Resistance should be greater than 10,000 ohms. If resistance is within specifications, replace fuel tank sending unit. If resistance is not within specifications, repair fuel tank sending unit wiring.