Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Power Mirror Control System: Inspection
- INSPECT OUTER MIRROR SWITCH ASSY
- Select "L" or "R" on the left/right adjustment switch. Measure the switch resistance.
Standard:
"L" OR "R" ON LEFT/RIGHT ADJUSTMENT SWITCHTester Connection Switch Condition Specified Condition O3-7 - O3-9 OFF 10 kΩ or higher O3-7 - O3-9 UP 90 to 100 Ω O3-7 - O3-9 DOWN 435 to 505 Ω O3-7 - O3-9 LEFT 740 to 860 Ω O3-7 - O3-9 RIGHT 220 to 280 Ω If the result is not as specified, replace the switch assy.
- Measure the left/right adjustment switch resistance.
Standard:
LEFT/RIGHT ADJUSTMENT SWITCHTester Connection Switch Condition Specified Condition O3-8 - O3-9 L 90 to 110 Ω O3-8 - O3-9 R 10 Ω or less If the result is not as specified, replace the switch assy.
- Measure the retract switch resistance.
Standard:
RETRACT SWITCHTester Connection Switch Condition Specified Condition O4-4 - O4-7 (B) position Below 1 Ω O4-2 - O4-4 (A) position Below 1 Ω If the result is not as specified, replace the switch assy.
- Measure the clearance sonar switch resistance.
CLEARANCE SONAR SWITCHTester Connection Switch Condition Specified Condition 3 - 4 OFF 10 kΩ or higher 3 - 4 ON Below 1 Ω If the result is not as specified, replace the switch assy.
- Select "L" or "R" on the left/right adjustment switch. Measure the switch resistance.
- INSPECT SEAT MEMORY SWITCH
- Measure the switch resistance.
Standard:
SEAT MEMORY SWITCH - RESISTANCE TABLETester Connection Switch Condition Specified Condition 2 - 6 SET Switch ON Below 1 Ω 3 - 6 M1 Switch ON Below 1 Ω 4 - 6 M2 Switch ON Below 1 Ω 5 - 6 M3 Switch ON Below 1 Ω If the result is not as specified, replace the switch assy.
- INSPECT OUTER REAR VIEW MIRROR ASSY LH
- Disconnect the mirror connector.
- Apply battery voltage and check operation of the mirror.
OK:
OUTER REAR VIEW MIRROR ASSY LH - OPERATION TABLEMeasurement Condition Specified Condition Battery positive (+) -> Terminal R39-1 (#MVR) Battery negative (-) -> Terminal R39-10 (#M+R) Turns upward (A) Battery positive (+) -> Terminal R39-10 (#M+R) Battery negative (-) -> Terminal R39-1 (#MVR) Turns downward (B) Battery positive (+) -> Terminal R39-10 (#M+R) Battery negative (-) -> Terminal R39-9 (#MHR) Turns right (D) Battery positive (+) -> Terminal R39-9 (#MHR) Battery negative (-) -> Terminal R39-10 (#M+R) Turns left (C) If the result is not as specified, replace the mirror assy.
- Apply battery voltage and check the mirror retract operation.NOTE:
- Disconnect and reconnect the battery once between each mirror position check.
- The mirror position cannot be changed manually when the battery is connected. If you wish to change the mirror position manually, disconnect the battery first before doing so.
OK:
MIRROR RETRACT OPERATION TABLEMeasurement Condition Mirror Condition Specified Condition Battery positive (+) -> Terminal R39-11 (MR-) Battery negative (-) -> Terminal R39-3 (MR+) Retracted position Moves from retracted position to driving position Battery positive (+) -> Terminal R39-3 (MR+) Battery negative (-) -> Terminal R39-11 (MR-) Driving position Moves from driving position to retracted position If the result is not as specified, replace the mirror assy.
- INSPECT OUTER REAR VIEW MIRROR ASSY RH
- Disconnect the mirror connector.
- Apply battery voltage and check operation of the mirror.
OK:
OUTER REAR VIEW MIRROR ASSY RH - OPERATION TABLEMeasurement Condition Specified Condition Battery positive (+) -> Terminal R40-1 (#MVR) Battery negative (-) -> Terminal R40-10 (#M+R) Turns upward (A) Battery positive (+) -> Terminal R40-10 (#M+R) Battery negative (-) -> Terminal R40-1 (#MVR) Turns downward (B) Battery positive (+) -> Terminal R40-10 (#M+R) Battery negative (-) -> Terminal R40-9 (#MHR) Turns right (D) Battery positive (+) -> Terminal R40-9 (#MHR) Battery negative (-) -> Terminal R40-10 (#M+R) Turns left (C) If the result is not as specified, replace the mirror assy.
- Apply battery voltage and check the mirror retract operation.
NOTE:- Disconnect and reconnect the battery once between each mirror position check.
- The mirror position cannot be changed manually when the battery is connected. If you wish to change the mirror position manually, disconnect the battery first before doing so.
OK:
OUTER REAR VIEW MIRROR ASSY RH - OPERATION TABLEMeasurement Condition Mirror Condition Specified Condition Battery positive (+) -> Terminal R40-11 (MR-) Battery negative (-) -> Terminal R40-3 (MR+) Retracted position Mirror moves from retracted position to driving position Battery positive (+) -> Terminal R40-3 (MR+) Battery negative (-) -> Terminal R40-11 (MR-) Driving position Mirror moves from driving position to retracted position If the result is not as specified, replace the mirror assy.
- INSPECT MIRROR POSITION SENSOR
- Check the voltage.
- Apply voltage to the terminals with a battery and a dry cell battery, as shown in MIRROR POSITION SENSOR - OPERATION TABLE .
- Measure the voltage while the mirror moves between the fully turned downward position and fully turned upward position.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Standard:
MIRROR POSITION SENSOR - OPERATION TABLEMeasurement Condition (battery) Measurement Condition (dry cell battery) Voltmeter Condition Mirror Condition Specified Condition Battery positive (+) -> Terminal R39/R40-1 Battery negative (-) -> Terminal R39/R40-10 Battery positive (+) -> Terminal R39/R40-5 Battery negative (-) -> Terminal R39/R40-14 Positive lead (+) -> Terminal R39/R40-6 Negative lead (-) -> Terminal R39/R40-14 Turns downward fully 2.8 to 5.0 V Battery positive (+) -> Terminal R39/R40-10 Battery negative (-) -> Terminal R39/R40-1 Battery positive (+) -> Terminal R39/R40-5 Battery negative (-) -> Terminal R39/R40-14 Positive lead (+) -> Terminal R39/R40-6 Negative lead (-) -> Terminal R39/R40-14 Turns upward fully 0 to 1.0 V If the result is not as specified, replace the mirror assy.
- Measure the voltage while the mirror moves between the fully turned to the left position and fully turned to the right position.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Standard (right side mirror):
MIRROR POSITION SENSOR - RIGHT SIDE MIRRORMeasurement Condition (battery) Measurement Condition (dry cell battery) Voltmeter Condition Mirror Condition Specified Condition Battery positive (+) -> Terminal R39/R40-9 Battery negative (-) -> Terminal R39/R40-10 Battery positive (+) -> Terminal R39/R40-5 Battery negative (-) -> Terminal R39/R40-14 Positive lead (+) -> Terminal R39/R40-13 Negative lead (-) -> Terminal R39/R40-14 Turns to the left fully 2.8 to 5.0 V Battery positive (+) -> Terminal R39/R40-10 Battery negative (-) -> Terminal R39/R40-9 Battery positive (+) -> Terminal R39/R40-5 Battery negative (-) -> Terminal R39/R40-14 Positive lead (+) -> Terminal R39/R40-13 Negative lead (-) -> Terminal R39/R40-14 Turns to the right fully 0 to 1.0 V If the result is not as specified, replace the mirror assy.
Standard (left side mirror):
MIRROR POSITION SENSOR - LEFT SIDE MIRRORMeasurement Condition (battery) Measurement Condition (dry cell battery) Voltmeter Condition Mirror Condition Specified Condition Battery positive (+) -> Terminal R39/R40-9 Battery negative (-) -> Terminal R39/R40-10 Battery positive (+) -> Terminal R39/R40-5 Battery negative (-) -> Terminal R39/R40-14 Positive lead (+) -> Terminal R39/R40-13 Negative lead (-) -> Terminal R39/R40-14 Turns to the left fully 0 to 1.0 V Battery positive (+) -> Terminal R39/R40-10 Battery negative (-) -> Terminal R39/R40-9 Battery positive (+) -> Terminal R39/R40-5 Battery negative (-) -> Terminal R39/R40-14 Positive lead (+) -> Terminal R39/R40-13 Negative lead (-) -> Terminal R39/R40-14 Turns to the right fully 2.8 to 5.0 V If the result is not as specified, replace the mirror assy.
- Check the voltage.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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