Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

CHECK OUTER REAR VIEW MIRROR ASSY LH (FROM UPPERMOST POSITION TO LOWERMOST POSITION MIRROR SENSORS VOLTAGE)
1. Check the mirror position sensors operation.
  1. Connect the positive lead from the voltmeter to terminal VSSR (M3-2) and the negative lead to terminal E1 (M3-8).
  2. Check that the voltage gradually changes according to Fig 2 below while the mirror moves from the uppermost position to lowermost position.
    
    Fig 1: Checking Outer Rear View Mirror Assy LH
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    Standard
    
    Fig 2: Outer Rear View Mirror LH Standard Voltage Specification Chart
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    NG: REPLACE OUTER REAR VIEW MIRROR ASSY LH
    
    OK: Go to next step.
CHECK OUTER REAR VIEW MIRROR ASSY LH (FROM LEFT-MOST POSITION TO RIGHT-MOST POSITION MIRROR SENSORS VOLTAGE)
1. Check the mirror position sensors operation.
  1. Connect the positive lead from the voltmeter to terminal HSRL (M3-7) and the negative lead to terminal E1 (M3-8).
  2. Check that the voltage gradually changes according to Fig 4 below while the mirror moves from the left-most position to right-most position.
    
    Fig 3: Checking Outer Rear View Mirror Assy LH
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    Standard
    
    Fig 4: Outer Rear View Mirror LH Standard Voltage Specification Chart
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    NG: REPLACE OUTER REAR VIEW MIRROR ASSY LH
    
    OK: Go to next step.
CHECK WIRE HARNESS (OUTER MIRROR CONTROL ECU - OUTER REAR VIEW MIRROR LH)
1. Disconnect the M3 outer rear view mirror and M2 outer mirror control ECU connectors.
2. Check the continuity between connectors.
  
  Fig 5: Checking Wire Harness
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard
  
  Fig 6: Wire Harness Continuity Specification Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NG: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR
  
  OK: REPLACE OUTER MIRROR CONTROL ECU ASSY
CHECK OUTER REAR VIEW MIRROR ASSY RH (FROM UPPERMOST POSITION TO LOWERMOST POSITION MIRROR SENSORS VOLTAGE)
1. Check the mirror position sensors operation.
  1. Connect the positive lead from the voltmeter to terminal VSSR (2) and the negative lead to terminal E1 (8).
  2. Check that the voltage gradually changes according to Fig 8 below while the mirror moves between the uppermost position and lowermost position.
    
    Fig 7: Checking Outer Rear View Mirror Assy RH
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    Standard
    
    Fig 8: Outer Rear View Mirror RH Standard Voltage Specification Chart
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    NG: REPLACE OUTER REAR VIEW MIRROR ASSY RH
    
    OK: Go to next step.
CHECK OUTER REAR VIEW MIRROR ASSY RH (FROM UPPERMOST POSITION TO LOWERMOST POSITION MIRROR SENSORS VOLTAGE)
1. Check the mirror potion sensors operation.
  1. Connect the positive lead from the voltmeter to terminal HSSR (7) and the negative lead to terminal E1 (8).
  2. Check that the voltage gradually changes according to the Fig 10 below while the mirror moves between the left-most position and right-most position.
    
    Fig 9: Checking Outer Rear View Mirror Assy RH
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    Standard
    
    Fig 10: Outer Rear View Mirror RH Standard Voltage Specification Chart
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    NG: REPLACE OUTER REAR VIEW MIRROR ASSY RH
    
    OK: Go to next step.
CHECK WIRE HARNESS (OUTER MIRROR CONTROL ECU - OUTER REAR VIEW MIRROR RH)
1. Disconnect the M4 outer rear view mirror and M2 outer mirror control ECU connectors.
2. Check the continuity between connectors.
  
  Fig 11: Checking Wire Harness
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard
  
  Fig 12: Wire Harnesss Continuity Specification Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NG: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR
  
  OK: REPLACE OUTER MIRROR CONTROL ECU ASSY