Combination Meter System Pre-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 IC.
  • 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.

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: Identifying Diagnosis Display, Trouble Item & Possible Cause

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 2: Reading Flashing Pattern No. 1 & 2

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002