Power Mirror Control System - Diagnostics: Inspection

1. Select L or R on the mirror master switch.
2. Measure the resistance of the mirror master switch.

   Standard: 

   MIRROR MASTER SWITCH
   
   

   Tester Connection	Switch Condition	Specified Condition
   8 (MSW) - 9 (E)	L	100 ohms
   8 (MSW) - 9 (E)	R	Below 1 ohms
   8 (MSW) - 9 (E)	OFF	10 k ohms or higher

   If the result is not as specified, replace the switch assy.

3. Measure the resistance of the mirror control switch.

   Standard: 

   MIRROR CONTROL SWITCH
   
   

   Tester Connection	Switch Condition	Specified Condition
   7 (M+) - 9 (E)	UP	Approx. 100 ohms
   7 (M+) - 9 (E)	RIGHT	250 ohms
   7 (M+) - 9 (E)	DOWN	470 ohms
   7 (M+) - 9 (E)	LEFT	800 ohms
   7 (M+) - 9 (E)	OFF	10 k ohms or higher

   If the result is not as specified, replace the switch assy.

   Fig 1: Inspecting Outer Mirror Switch Assy

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Measure the resistance of the retract switch.

   Standard: 

   RETRACT SWITCH
   
   

   Tester Connection	Switch Condition	Specified Condition
   4 - 5	Retract	10 k ohms or higher
   4 - 5	Return	Below 1 ohms

   If the result is not as specified, replace the switch assy.

   Fig 2: Measuring Resistance Of Mirror Retract Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT SEAT MEMORY SWITCH 

1. Measure the resistance of the switch.

   Standard: 

   SEAT MEMORY SWITCH (DRIVER SIDE)
   
   

   Tester Connection	Switch Condition	Specified Condition
   1 - 2	SET switch ON	Below 1 ohms
   1 - 3	M1 switch ON	Below 1 ohms
   1 - 4	M2 switch ON	Below 1 ohms

   If the result is not as specified, replace the switch.

   Fig 3: Inspecting Seat Memory Switch (Driver Side)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Apply battery voltage and check the operation of the mirror.

   OK: 

   OUTER REAR VIEW MIRROR ASSY LH
   
   

   Measurement Condition	Specified Condition
   Battery positive (+) -> Terminal 1 Battery negative (-) -> Terminal 10	Turns upward (A)
   Battery positive (+) -> Terminal 10 Battery negative (-) -> Terminal 1	Turns downward (B)
   Battery positive (+) -> Terminal 9 Battery negative (-) -> Terminal 10	Turns left (C)
   Battery positive (+) -> Terminal 10 Battery negative (-) -> Terminal 9	Turns right (D)

   If the result is not as specified, replace the mirror assy.

   Fig 4: Checking Operation Of Mirror

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply battery voltage and check the operation of the retractable mirror.*

   HINT:

   *: w/ Retractable mirror

   NOTE:

   • Disconnect and reconnect the battery between each mirror position check.
   • The mirror position cannot be changed manually when the battery is connected. To change the mirror position manually, the battery must be disconnected first.

   OK: 

   OUTER REAR VIEW MIRROR ASSY LH (W/RETRACTABLE MIRROR)
   
   

   Measurement Condition	Mirror Condition	Specified Condition
   Battery positive (+) -> Terminal 3 Battery negative (-) -> Terminal 11	Retracted position	Moves from retracted position to driving position
   Battery positive (+) -> Terminal 11 Battery negative (-) -> Terminal 3	Driving position	Moves from driving position to retracted position

   If the result is not as specified, replace the mirror assy.

   Fig 5: Checking Operation Of Retractable Mirror

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Inspect the mirror position sensor.
   1. Apply battery and dry cell battery voltage to the terminals as shown in MIRROR POSITION SENSOR .
   2. Measure the voltage while the mirror moves between the fully downward and fully upward positions.
      Fig 6: Inspecting Mirror Position Sensor

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      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

      If the result is not as specified, replace the mirror assy.

   3. Measure the voltage while the mirror moves between fully turned to the left and fully turned to the right.

      Standard: 

      Fig 7: Measuring Voltage While Mirror Moves Between Fully Turned To Left & Right

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      MIRROR MOVES BETWEEN FULLY TURNED TO LEFT & RIGHT
      
      

      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	Turns to rightfully	0 to 1.0 V
      Battery negative (-) -> Terminal 9	Battery negative (-) -> Terminal 14	Negative (-) lead -> Terminal 14

      If the result is not as specified, replace the mirror assy.

4. Inspect the mirror heater.
   1. Measure the resistance between terminals 4 and 12 of the connector.

      Standard: 3.57 to 4.83 Ω at 25°C (75°F) 

   2. Apply battery voltage and check the operation of mirror heater.

      OK: 

      MIRROR HEATER
      
      

      Measurement Condition	Specified Condition
      Battery positive (+) -> Terminal 4 Battery negative (-) -> Terminal 12	Mirror becomes warn

      Fig 8: Inspecting Mirror Heater

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT:

   It will take a short time for the mirror to become warm.

   If the result is not as specified, replace the mirror assy.

1. Apply battery voltage and check the operation of the mirror.

   OK: 

   OPERATION OF MIRROR
   
   

   Measurement Condition	Specified Condition
   Battery positive (+) -> Terminal 1 Battery negative (-) -> Terminal 10	Turns upward (A)
   Battery positive (+) -> Terminal 10 Battery negative (-) -> Terminal 1	Turns downward (B)
   Battery positive (+) -> Terminal 9 Battery negative (-) -> Terminal 10	Turns left (C)
   Battery positive (+) -> Terminal 10 Battery negative (-) -> Terminal 9	Turns right (D)

   If the result is not as specified, replace the mirror assy.

   Fig 9: Checking Operation Of Mirror

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply battery voltage and check the operation of the retractable mirror.*

   HINT:

   *: w/ Retractable mirror

   NOTE:

   • Disconnect and reconnect the battery between each mirror position check.
   • The mirror position cannot be changed manually when the battery is connected. To change the mirror position manually, the battery must be disconnected first.

   OK: 

   OPERATION OF RETRACTABLE MIRROR
   
   

   Measurement Condition	Mirror Condition	Specified Condition
   Battery positive (+) -> Terminal 3 Battery negative (-) -> Terminal 11	Retracted position	Moves from retracted position to driving position
   Battery positive (+) -> Terminal 11 Battery negative (-) -> Terminal 3	Driving position	Moves from driving position to retracted position

   Fig 10: Checking Operation Of Retractable Mirror

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   If the result is not as specified, replace the mirror assy.

3. Inspect the mirror position sensor.
   1. Apply battery and dry cell battery voltage to the terminals as shown in MIRROR POSITION SENSOR .
   2. Measure the voltage while the mirror moves between the fully downward and fully upward positions.
      Fig 11: Inspecting Mirror Position Sensor

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      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

      If the result is not as specified, replace the mirror assy.

   3. Measure the voltage while the mirror moves between fully turned to the left and fully turned to the right.
      Fig 12: Measuring Voltage While Mirror Moves Between Fully Turned To Left & Right

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      FULLY TURNED TO LEFT AND FULLY TURNED TO RIGHT
      
      

      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	Positive lead (+) -> Terminal 13	Turns to rightfully	2.8 to 5.0 V
      Battery negative (-) -> Terminal 9	Battery negative (-) -> Terminal 14	Negative lead (-) -> Terminal 14

      If the result is not as specified, replace the mirror assy.

4. Inspect the operation of the mirror heater.
   1. Measure the resistance between terminals 4 and 12 of the connector.

      Standard: 3.57 to 4.83 Ω at 25°C (75°F) 

   2. Apply battery voltage and check the mirror heater operation.

      OK: 

      MIRROR HEATER
      
      

      Measurement Condition	Specified Condition
      Battery positive (+) -> Terminal 4 Battery negative (-) -> Terminal 12	Mirror becomes warn

      Fig 13: Inspecting Operation Mirror Heater

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT:

   It will take a short time for the mirror to become warm.

   If the result is not as specified, replace the mirror assy.