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POWER MIRROR CONTROL SYSTEM > Power Mirror Surface Position is not Memorized

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SYSTEM DESCRIPTION

When the seat memory M1, M2 or M3 switch is pressed, the multiplex network master switch assembly sends a memory switch status signal to the position control ECU and switch assembly LH (driver side). Then the position control ECU and switch assembly LH (driver side) send the following to the front multiplex network door ECU LH and RH: 1) a memory M1, M2 or M3 call signal, and 2) driver and passenger seat mirror position call signals recorded in memory. When the door ECU LH and RH receive the memory M1, M2 or M3 call signal, and then receive the driver and passenger seat mirror position replay signal, the door ECU LH and RH activate the mirror control motors to move the mirrors to the previously recorded positions.

WIRING DIAGRAM

INSPECTION PROCEDURE

1.CHECK SEAT MEMORY SWITCH FUNCTION (SEAT POSITION MEMORY FUNCTION)

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.

GO TO FRONT POWER SEAT CONTROL SYSTEM

OK

2.CHECK SEAT MEMORY SWITCH FUNCTION (REGISTRATION OF SEAT MEMORY SWITCH)

Check that the memory operation is properly completed.
HINT:
A buzzer sounds when the door mirror position and mirror facing direction are memorized.
NOTICE:
1. The seat position will not be recorded if the SET switch and 2 or more of the memory switches (for example, M1 and M2) are pressed simultaneously.
2. If the operation fails, the mirror facing direction will not be memorized until the SET switch is turned off.
3. The mirror facing direction will not be memorized when the mirror is operated manually.
OK:
Driver side seat position can be memorized using seat memory switch (driver side).

GO TO FRONT POWER SEAT CONTROL SYSTEM

OK

3.READ VALUE OF INTELLIGENT TESTER (MIRROR POSITION SENSOR)

Check the Data List for proper functioning of the mirror position sensor.

Front multiplex network door ECU (LH, RH):

Item	Measurement Item / Range (Display)	Normal Condition	Diagnostic Note
Mirror Position Sensor V	Vertical mirror position / Min.: 0, Max.: 5 V	Within 0 to 5 V	-
Mirror Position Sensor H	Horizontal mirror position / Min.: 0, Max.: 5 V	Within 0 to 5 V	-

OK:: Output voltage is as shown in table above.

REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY (DRIVER SIDE)

NG

4.INSPECT OUTER REAR VIEW MIRROR ASSEMBLY (MIRROR POSITION SENSOR)

Disconnect the i1 or j1 mirror connector.

Apply battery and dry cell battery voltage to the terminals as shown in the table below.

Measure the voltage while the mirror moves between the fully downward and fully upward positions.

Standard voltage:

Outer rear view mirror assembly LH:

Measurement Connection (Battery)	Measurement Connection (Dry Cell Battery)	Voltmeter Condition	Mirror Condition	Specified Condition
Battery positive (+) → Terminal 10 (M+) Battery negative (-) → Terminal 1 (MV)	Battery positive (+) → Terminal 5 (VC) Battery negative (-) → Terminal 14 (E1)	Positive (+) lead → Terminal 6 (VSSL) Negative (-) lead → Terminal 14 (E1)	Turns fully downward	0 to 1.0 V
Battery positive (+) → Terminal 1 (MV) Battery negative (-) → Terminal 10 (M+)	Battery positive (+) → Terminal 5 (VC) Battery negative (-) → Terminal 14 (E1)	Positive (+) lead → Terminal 6 (VSSL) Negative (-) lead → Terminal 14 (E1)	Turns fully upward	2.8 to 5.0 V

Outer rear view mirror assembly RH:

Measurement Connection (Battery)	Measurement Connection (Dry Cell Battery)	Voltmeter Condition	Mirror Condition	Specified Condition
Battery positive (+) → Terminal 10 (M+) Battery negative (-) → Terminal 1 (MV)	Battery positive (+) → Terminal 5 (VC) Battery negative (-) → Terminal 14 (E1)	Positive (+) lead → Terminal 6 (VSSR) Negative (-) lead → Terminal 14 (E1)	Turns fully downward	0 to 1.0 V
Battery positive (+) → Terminal 1 (MV) Battery negative (-) → Terminal 10 (M+)	Battery positive (+) → Terminal 5 (VC) Battery negative (-) → Terminal 14 (E1)	Positive (+) lead → Terminal 6 (VSSR) Negative (-) lead → Terminal 14 (E1)	Turns fully upward	2.8 to 5.0 V

Measure the voltage while the mirror moves between the fully left and fully right positions.

Standard voltage:

Outer rear view mirror assembly LH:

Measurement Connection (Battery)	Measurement Connection (Dry Cell Battery)	Voltmeter Condition	Mirror Condition	Specified Condition
Battery positive (+) → Terminal 9 (MH) Battery negative (-) → Terminal 10 (+M)	Battery positive (+) → Terminal 5 (VC) Battery negative (-) → Terminal 14 (E1)	Positive (+) lead → Terminal 13 (HSSL) Negative (-) lead → Terminal 14 (E1)	Turns to left fully	2.8 to 5.0 V
Battery positive (+) → Terminal 10 (M+) Battery negative (-) → Terminal 9 (MH)	Battery positive (+) → Terminal 5 (VC) Battery negative (-) → Terminal 14 (E1)	Positive (+) lead → Terminal 13 (HSSL) Negative (-) lead → Terminal 14 (E1)	Turns to right fully	0 to 1.0 V

Outer rear view mirror assembly RH:

Measurement Connection (Battery)	Measurement Connection (Dry Cell Battery)	Voltmeter Condition	Mirror Condition	Specified Condition
Battery positive (+) → Terminal 9 (MH) Battery negative (-) → Terminal 10 (M+)	Battery positive (+) → Terminal 5 (VC) Battery negative (-) → Terminal 14 (E1)	Positive (+) lead → Terminal 13 (HSSR) Negative (-) lead → Terminal 14 (E1)	Turns to left fully	0 to 1.0 V
Battery positive (+) → Terminal 10 (M+) Battery negative (-) → Terminal 9 (MH)	Battery positive (+) → Terminal 5 (VC) Battery negative (-) → Terminal 14 (E1)	Positive (+) lead → Terminal 13 (HSSR) Negative (-) lead → Terminal 14 (E1)	Turns to right fully	2.8 to 5.0 V

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

REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH

REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH