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Mirror Position Memory Sensors: Avalon

  1. Disconnect drivers side power mirror switch harness connector. Strip off the vinyl tape of connector and remove wire terminals No. 2, 3, 6, 7 and 9 from connector housing. Connect three 1.5-volt dry cell batteries in series. See Fig 1.
    Fig 1: Connecting Test Leads To Power Mirror Harness Connector (Avalon - With Driving Position Memory - Lowermost)
    G00050547Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Connect dry cell batteries positive lead to terminal No. 7 and negative lead to terminal No. 6. Connect DVOM positive lead to terminal No. 9 and negative lead to terminal No. 6. See Fig 2.
    Fig 2: Identifying Power Mirror Switch Terminals (Avalon - With Driving Position Memory)
    G00050545Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Apply vehicle battery voltage to terminals No. 2 and 3, while checking the gradual voltage change from mirror uppermost position of 0-1.8 volts to mirror lowermost position of 2.8-5.0 volts. Reverse vehicle battery voltage leads on terminals No. 2 and 3, while checking the gradual voltage change from mirror lowermost to uppermost position. If voltage is not as specified, replace motor assembly.
  4. Disconnect vehicle battery leads. Leave dry cell battery leads connected to terminals No. 6 and 7. Disconnect DVOM positive lead from terminal No. 9 and connect to terminal No. 8.
  5. Apply vehicle battery voltage to terminals No. 1 and 2, while checking the gradual voltage change from mirror left-most to right-most position. Reverse vehicle battery voltage leads on terminals No. 1 and 2 while checking the gradual voltage change from mirror right-most to left-most position.
  6. With mirror voltage in left position, voltage should gradually change from right-most 0-1.8 volts to 2.8-5.0 volts in left-most position. With mirror voltage in right position, voltage should gradually change from left-most 0-1.8 volts to 2.8-5.0 volts in right-most position. If voltage is not as specified, replace motor assembly.
  7. Using an ohmmeter, check driving position memory and return switch continuity. See DRIVING POSITION MEMORY & RETURN SWITCH CONTINUITY TEST (AVALON)  table.
    DRIVING POSITION MEMORY & RETURN SWITCH CONTINUITY TEST (AVALON)

    Switch Position (1) Terminal No.
    SET On 3 & 4
    SW1 On 2 & 3
    SW2 On 1 & 3
    (1) If continuity does not exist between specified terminals, replace switch. See Fig 3
    Fig 3: Identifying Driving Position Memory Return Switch Terminals
    G00050546Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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