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Combination Meter System: Pre-Check

  1. Before Check 

    Since a trouble symptom may result from multiple causes, check not only the part where a user complains of but also the following items in order to be sure no other trouble is identified.

    • Fuse related parts
    • Wire harness related parts
    • Valve related parts

    NOTE:
    • Setting the ignition switch to START temporarily stops all meter operation, however, this is not an error.
    • When replacing the combination meter ECU, carefully avoid any contact with the 1C.
    • Removing a battery terminal during engine operation may cause a reversed current and lead to malfunction.
    • When disconnecting any connector or terminal, be sure to disconnect the battery terminal.
  2. Fuel Gauge Diagnosis Check 
      NOTE: If FR voltage input to the fuel sender gauge is abnormal (4.8 V or more, or 0.06 V or less) due to any error, an emergency will be displayed.
    1. Fuel emergency display
    2. Display:

      Immediately after the ignition switch is ON, all of the segments flash.

    Fig 1: Fuel Gauge Diagnosis Checking Chart
    G02805690Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 2: Reading Fuel Gauge Flashing Patterns
    G02805691Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002