Component Tests and General Diagnostics

INSPECTION







1. Master switch left side:
INSPECT MIRROR SWITCH CONTINUITY







2. Master switch right side:
INSPECT MIRROR SWITCH CONTINUITY
If continuity is not as specified, replace the switch.
If continuity is as specified, inspect the switch circuit.







3. INSPECT MIRROR SWITCH CIRCUIT
Disconnect the connector from the switch and inspect the connector on the wire harness side.
If the circuit is not as specified, inspect the circuits connected to other parts.




4. INSPECT INDICATOR LIGHT OPERATION
Connect the positive (+) lead from the battery to terminal 5 and the negative (-) lead to terminal 6, and check that the indicator light does not light up, replace the switch.




5. w/o Driving Position Memory (Driver's door):
INSPECT MIRROR MOTOR OPERATION
a. Connect the positive (+) lead from the battery to terminal 7 and the negative (-) lead to terminal 8, and check that the mirror turns upward.
b. Reverse the polarity, and check that the mirror turns downward.




c. Connect the positive (+) lead from the battery to terminal 8 and the negative (-) lead to terminal 6, and check that the mirror turns to the left side.
d. Reverse the polarity, and check that the mirror turns to the right side.
If operation is not as specified, replace the mirror.




6. w/o Driving Position Memory (Passenger's door):
INSPECT MIRROR MOTOR OPERATION
a. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2, and check that the mirror turns upward.
b. Reverse the polarity, and check that the mirror turns downward.




c. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 2, and check that the mirror turns to the left side.
d. Reverse the polarity, and check that the mirror turns to the right side.
If operation is not as specified, replace the mirror.




7. w/ Driving Position Memory:
INSPECT MIRROR MOTOR OPERATION
a. Connect the positive (+) lead from the battery to terminal 12 and the negative (-) lead to terminal 11, and check that the mirror turns upward.
b. Reverse the polarity, and check that the mirror turns downward.




c. Connect the positive (+) lead from the battery to terminal 12 and the negative (-) lead to terminal 10, and check that the mirror turns to the left side.
d. Reverse the polarity, and check that the mirror turns to the right side.
If operation is not as specified, replace the mirror.







8. w/ Driving Position Memory only:
INSPECT MIRROR POSITION SENSORS OPERATION
a. Connect the positive (+) lead from the voltmeter to terminal 7 and the negative (-) lead to terminal 6.
b. Check that the voltage gradually changes according to the table while the mirror moves between the uppermost position and lowermost position.
If voltage value is not as specified, replace the mirror assembly.







c. Connect the positive (+) lead from the voltmeter to terminal 9 and negative (-) lead to terminal 6.
d. Check that the voltage gradually changes according to the table while the mirror moves between the left most position and right-most position.
If voltage value is not as specified, replace the mirror assembly.

9. INSPECT DRIVING POSITION MEMORY AND RETURN SWITCH CONTINUITY AND CIRCUIT







10. INSPECT MIRROR CONTROL ECU CIRCUIT
Disconnect the connector from the ECU and inspect the connector on the wire harness side.







If the circuit is not as specified, inspect the circuits connected to other parts.

11. INSPECT MIRROR CONTROL ECU OPERATION
Connect the connectors and using a voltmeter with high impedance (10 kohm/V minimum), measure the voltage at each terminal and body ground.
If the operation is not as specified, inspect the wire harness and mirror switch or motor assembly. Then if these are correct, replace the ECU.