SYSTEM DESCRIPTION
If either the M1 or M2 seat memory switch is pressed, the outer mirror control ECU assembly (driver door) detects the switch operation and sends the seat memory switch signal to the main body ECU (multiplex network body ECU) via CAN communication. On receiving the seat memory switch signal, the main body ECU (multiplex network body ECU) sends the memory request signal to each outer mirror control ECU assembly via CAN communication. When receiving this signal, each outer mirror control ECU assembly stores the mirror surface position based on information from the mirror position sensor, which is built into the outer rear view mirror assembly.
WIRING DIAGRAM
INSPECTION PROCEDURE
Note
The mirror surface position will not be memorized if the engine switch is not on (IG).
The mirror surface position will not be stored if the seat memory SET switch and 2 of the seat memory switches are pressed simultaneously.
If the operation fails, the mirror surface position will not be memorized until the seat memory SET switch is turned off.
The mirror surface position will not be memorized when the mirror is operated manually.
The power mirror control system (w/ Memory) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the power mirror control system (w/ Memory) after confirming that the communication systems are functioning properly Click here.
Tech Tips
Each outer rear view mirror assembly has a built-in mirror vertical position sensor and mirror horizontal position sensor.
PROCEDURE
READ VALUE USING GTS
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / Mirror L / Data List.
Read the Data List according to the display on the GTS.
Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
---|---|---|---|
Seat Memory Switch1 | Seat memory switch M1 signal/ ON or OFF | ON: Seat memory switch M1 on OFF: Seat memory switch M1 off |
- |
Seat Memory Switch2 | Seat memory switch M2 signal/ ON or OFF | ON: Seat memory switch M2 on OFF: Seat memory switch M2 off |
- |
Seat Memory Switch3* | Seat memory switch M3 signal/ ON or OFF | ON: Seat memory switch M3 on OFF: Seat memory switch M3 off |
Not applicable |
Seat Memory Set SW | Seat memory switch SET signal/ ON or OFF | ON: Seat memory switch SET on OFF: Seat memory switch SET off |
- |
*: Although the item is displayed on the GTS, it is not applicable to this vehicle.
OK |
---|
The GTS display changes between ON and OFF according to the switch operations. |
NG |
CHECK HARNESS AND CONNECTOR (SEAT MEMORY SWITCH - OUTER MIRROR CONTROL ECU ASSEMBLY) Click here |
OK |
CHECK SEAT MEMORY SWITCH FUNCTION
When any seat memory switch (M1 or M2 switch) is pressed, check that the driver seat moves to the memorized position.
OK |
---|
The driver seat moves to the memorized position. |
NG |
GO TO POWER SEAT CONTROL SYSTEM (Power Seat does not Return to Memorized Position) Click here |
OK |
CHECK MEMORY AND REACTIVATION FUNCTION
*a | Turn to Left Fully |
Turn the engine switch on (IG).
Using the outer mirror switch assembly, turn the mirror surface to the fully left position.
Press the M1 switch while the SET switch is being pressed.
Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized.
Using the outer mirror switch assembly, turn the mirror surface to the fully right position.
Press the M1 switch.
Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the recorded fully left position.
Result | ||||||||
---|---|---|---|---|---|---|---|---|
|
B |
REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) Click here |
C |
REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR) Click here |
A |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here
CHECK HARNESS AND CONNECTOR (SEAT MEMORY SWITCH - OUTER MIRROR CONTROL ECU ASSEMBLY)
Disconnect the K12 connector from the outer mirror control ECU assembly.
Disconnect the K13 connector from the seat memory switch.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
INSPECT SEAT MEMORY SWITCH
Remove the seat memory switch Click here.
Inspect the seat memory switch Click here.
NG |
REPLACE SEAT MEMORY SWITCH Click here |
OK |
REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR) Click here
REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR)
Replace the outer rear view mirror assembly (driver door) Click here.
NEXT |
CHECK MEMORY AND REACTIVATION FUNCTION
*a | Turn to Left Fully |
Turn the engine switch on (IG).
Using the outer mirror switch assembly, turn the mirror surface to the fully left position.
Press the M1 switch while the SET switch is being pressed.
Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized.
Using the outer mirror switch assembly, turn the mirror surface to the fully right position.
Press the M1 switch.
Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the recorded fully left position.
OK |
---|
Memory and reactivation function is normal. |
NG |
REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR) Click here |
OK |
END (OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) WAS DEFECTIVE)
REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR)
Replace the outer rear view mirror assembly (front passenger door) Click here.
NEXT |
CHECK MEMORY AND REACTIVATION FUNCTION
*a | Turn to Left Fully |
Turn the engine switch on (IG).
Using the outer mirror switch assembly, turn the mirror surface to the fully left position.
Press the M1 switch while the SET switch is being pressed.
Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized.
Using the outer mirror switch assembly, turn the mirror surface to the fully right position.
Press the M1 switch.
Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the recorded fully left position.
OK |
---|
Memory and reactivation function is normal. |
NG |
REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (FRONT PASSENGER DOOR) Click here |
OK |
END (OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR) WAS DEFECTIVE)