LEMON Manuals: Even more car manuals for everyone
Home >> Volvo >> 1993 >> 850 Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Testing >> Fuel Gauge Test >> 850 (Fuel Gauge Reading Incorrect)

850 (Fuel Gauge Reading Incorrect)

  1. Turn ignition on. Activate diagnostic test mode No. 3. See DIAGNOSTIC TEST MODE NO. 3 under SELF-DIAGNOSTICS. If fuel gauge indicates significantly more or less than 1/2 full, replace instrument cluster. If fuel gauge indicates 1/2 full, go to next step and check fuel level sensor ground.
  2. Turn ignition off. Remove right side panel in trunk. Disconnect Black 2-pin fuel level sensor connector. See Figure. Connect an ohmmeter between connector terminal No. 2 (Yellow/Red wire) and ground. If zero ohms are present, go to next step and check fuel level sensor. If zero ohms are not present, check Yellow/Red wire between connector in trunk and 30-pin instrument cluster connector.
  3. Turn ignition off. Locate fuel level sensor Black 2-pin connector behind right side panel in trunk. Connect ohmmeter between connector terminals on fuel level sensor side of harness.
  4. Depending on amount of fuel in tank, if ohmmeter indicates 7.5-12.5 to 322.5-327.5 ohms, replace instrument cluster. If ohmmeter does not indicate 7.5-12.5 to 322.5-327.5 ohms, replace fuel level sensor. If amount of fuel in tank is unknown, remove fuel level sensor from tank and turn it upside down.
  5. Connect an ohmmeter between fuel level sensor connector terminals. Turn sensor slowly to same position that it had when in tank. Resistance should rise from about 10 ohms (full tank) to about 325 ohms (empty tank). If resistances are incorrect, replace sensor. If resistances are correct, replace instrument cluster.
scientia non olet · About LEMON Manuals