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Home >> Lexus >> 2005 >> SC 430 >> Repair and Diagnosis >> Body & Frame >> Mirrors >> Power Mirror Control System - Diagnostics >> Power Mirror Does Not Turn To Memorized Direction >> Inspection Procedure
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Inspection Procedure

  1. CHECK OUTER MIRROR SWITCH ASSY FUNCTION (POWER MIRROR CONTROL FUNCTION) 
    1. Check that the outer rear view mirror LH and RH position can be moved using the outer mirror switch.

      OK: Outer rear view mirror LH and RH can be moved using outer mirror switch. 

    1. NG: Go to  PROBLEM SYMPTOMS TABLE  
    2. OK: Go to next step. 
  2. CHECK SEAT MEMORY SWITCH FUNCTION (MIRROR MEMORY FUNCTION) 
    1. Check that the outer rear view mirror LH and RH position can be memorized using the seat memory switch.

      OK: Outer rear view mirror LH and RH position can be memorized using seat memory switch. 

    1. NG: Go to FLOW CHART 
    2. OK: Go to next step. 
  3. CHECK SEAT MEMORY SWITCH FUNCTION (SEAT MEMORY FUNCTION) 
    1. Check that the driver side seat can be moved using the seat memory switch.

      OK: Driver side seat can be moved using seat memory switch. 

    1. NG: Go to FRONT POWER SEAT CONTROL SYSTEM (See  PROBLEM SYMPTOMS TABLE  ) 
    2. OK: Go to next step. 
  4. READ DATA LIST (MIRROR POSITION SENSOR) 
    1. Check the DATA LIST for proper functioning of the mirror position sensor.

      Multiplex network door ECU front LH, RH (driver, passenger door ECU): 

      MIRROR POSITION SENSOR

      Item Measure Item/ Range (Display) Normal Condition Diagnostic Note
      MIRPOSSENV Vertical mirror position/ Min.:0, Max.: 5 V Within range from 0 to 5 V -
      MIRPOSSEN H Horizontal mirror position/ Min.: 0, Max.: 5 V Within range from 0 to 5 V -

      OK: Voltage output is as shown in  MIRROR POSITION SENSOR   . 

    1. NG: Go to step   5 
    2. OK: Go to step   6 . 
  5. INSPECT OUTER REAR VIEW MIRROR ASSY LH OR RH (MIRROR POSITION SENSOR) 
    1. Disconnect the R14 or R15 mirror connector.
    2. Apply battery and dry cell battery voltage to the terminals shown in OUTER REAR VIEW MIRROR ASSY LH OR RH (MIRROR POSITION SENSOR) .
    3. Measure the voltage while the mirror moves between the fully downward and fully upward.

      Standard: 

      OUTER REAR VIEW MIRROR ASSY LH OR RH (MIRROR POSITION SENSOR)

      Measurement Connection (Battery) Measurement Connection (Dry Cell Battery) Voltmeter Condition Mirror Condition Specified Condition
      Battery positive (+) -> Terminal 10 Battery positive (+) -> Terminal 5 Positive (+) lead -> Terminal 6 Turns downward fully 2.8 to 5.0 V
      Battery negative (-) -> Terminal 1 Battery negative (-) -> Terminal 14 Negative (-) lead -> Terminal 14
      Battery positive (+) -> Terminal 1 Battery positive (+) -> Terminal 5 Positive (+) lead -> Terminal 6 Turns upward fully 0 to 1.0 V
      Battery negative (-) -> Terminal 10 Battery negative (-) -> Terminal 14 Negative (-) lead -> Terminal 14
      Fig 1: Measuring Voltage While Mirror Moves Between Fully Downward & Fully Upward
      G02956701Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Measure the voltage while the mirror moves between the fully left and fully right.
      Fig 2: Measuring Voltage While Mirror Moves Between Fully Left & Fully Right
      G02956702Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Driver side 

      MEASUREMENT CONNECTION SPECIFIED CONDITION TABLE

      Measurement Connection (Battery) Measurement Connection (Dry Cell Battery) Voltmeter Condition Mirror Condition Specified Condition
      Battery positive (+) -> Terminal 9 Battery positive (+) -> Terminal 5 Positive (+) lead -> Terminal 13 Turns to left fully 2.8 to 5.0 V
      Battery negative (-) -> Terminal 10 Battery negative (-) -> Terminal 14 Negative (-) lead -> Terminal 14
      Battery positive (+) -> Terminal 10 Battery positive (+) -> Terminal 5 Positive (+) lead -> Terminal 13 Battery negative (-) -> Terminal 9 Battery negative (-) -> Terminal 14
      Negative (-) lead -> Terminal 14 Turns to rightfully 0 to 1.0 V

      Passenger side 

      MEASUREMENT CONNECTION SPECIFIED CONDITION TABLE

      Measurement Connection (Battery) Measurement Connection (Dry Cell Battery) Voltmeter Condition Mirror Condition Specified Condition
      Battery positive (+) -> Terminal 9 Battery positive (+) -> Terminal 5 Positive (+) lead -> Terminal 13 Turns to left fully 0 to 1.0 V
      Battery negative (-) -> Terminal 10 Battery negative (-) -> Terminal 14 Negative (-) lead -> Terminal 14
      Battery positive (+) -> Terminal 10 Battery positive (+) -> Terminal 5 Negative (-) lead -> Terminal 14 Turns to rightfully 2.8 to 5.0 V
      Battery negative (-) -> Terminal 9 Battery negative (-) -> Terminal 14 Positive (+) lead -> Terminal 13

      Result: 

      RESULT

      Result Proceed to
      Outer rear view mirror LH operates normally A
      Outer rear view mirror RH operates normally B
      Outer rear view mirror LH does not operate normally C
      Outer rear view mirror RH does not operate normally D
    1. B: REPLACE MULTIPLEX NETWORK DOOR ECU FRONT RH (PASSENGER DOOR ECU) 
    2. C: REPLACE OUTER REAR VIEW MIRROR ASSY LH 
    3. D: REPLACE OUTER REAR VIEW MIRROR ASSY RH 
    4. A: REPLACE MULTIPLEX NETWORK DOOR ECU FRONT LH (DRIVER DOOR ECU) 
  6. READ DATA LIST (MIRROR MEMORY POSITION, SHIFT LEVER POSITION, VEHICLE SPEED SENSOR) 
    1. Check DATA LIST for proper functioning of the mirror memory position, shift lever position and vehicle speed.

      Position control ECU assy (driver, passenger side): 

      Fig 3: Mirror Memory Position, Shift Lever Position, Vehicle Speed Sensor Table
      G02956703Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result: 

      RESULT

      Result Proceed to
      Tester screen's data is within value ranges in above Fig 3, and display changes between ON and OFF according to MEASUREMENT CONNECTION SPECIFIED CONDITION TABLE  above (driver side) A
      Tester screen's data is within value ranges in above Fig 3, and display changes between ON and OFF according to MEASUREMENT CONNECTION SPECIFIED CONDITION TABLE  above (passenger side) B
      Tester screen's data is not within value ranges in above Fig 3, or display does not change between ON and OFF according to MEASUREMENT CONNECTION SPECIFIED CONDITION TABLE  above (driver side) C
      Tester screen's data is not within value ranges in above Fig 3, or display does not change between ON and OFF according to MEASUREMENT CONNECTION SPECIFIED CONDITION TABLE  above (passenger side) D
    1. B: REPLACE POSITION CONTROL ECU ASSY (PASSENGER SIDE) 
    2. C: REPLACE OUTER REAR VIEW MIRROR ASSY LH 
    3. D: REPLACE OUTER REAR VIEW MIRROR ASSY RH 
    4. A: REPLACE POSITION CONTROL ECU ASSY (DRIVER SIDE) 
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