Toyota Venza: Power Mirrors do not Return to Memorized Position

Toyota Venza Service Manual / Mirror (ext) / Power Mirror Control System(w/ Memory) / Power Mirrors do not Return to Memorized Position

SYSTEM DESCRIPTION

If either the M1 or M2 seat memory switch is pressed, the outer mirror control ECU assembly (driver door) detects the seat memory switch status and sends the switch signal to the main body ECU (driver side junction block assembly) via CAN communication. The main body ECU (driver side junction block assembly) sends back reproduction signals to each outer mirror control ECU assembly via CAN communication. When receiving the reproduction signals, each outer mirror control ECU assembly operates the vertical and horizontal mirror motors, which are built into the outer rear view mirror assembly, to adjust the mirror surface to the stored position.

WIRING DIAGRAM

PROCEDURE

1.	CHECK CAN COMMUNICATION SYSTEM

(a) Use the Techstream to check if the CAN communication system is functioning normally (See page ).

OK:

CAN communication DTC is not output.

GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART)

2.	CHECK SEAT MEMORY SWITCH FUNCTION

(a) 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.

GO TO POWER SEAT CONTROL SYSTEM (Power Seat does not Return to Memorized Position)

3.	CHECK POWER MIRROR CONTROL FUNCTION (ELECTRICAL REMOTE CONTROL MIRROR FUNCTION)

(a) Check the electrical remote control mirror function (See page ).

OK:

Electrical remote control mirror function is normal.

GO TO OTHER DIAGNOSIS PROCEDURE

4.	READ VALUE USING TECHSTREAM (MIRROR POSITION MEMORY)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch ON.

(d) Enter the following menus: Body Electrical / Mirror L or Mirror R / Data List.

(e) Read the Data List according to the display on the Techstream.

Mirror L / Mirror R

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Mirror Memory No. 1	Mirror position memorized in seat memory switch M1 / ON or OFF	ON: Memorized OFF: Not memorized	-
Mirror Memory No. 2	Mirror position memorized in seat memory switch M2 / ON or OFF	ON: Memorized OFF: Not memorized	-
Mirror Memory No. 3*	Mirror position memorized in seat memory switch M3 / ON or OFF	ON: Memorized OFF: Not memorized	Not applicable
Mirror Memory No. 4*	Mirror position memorized in seat memory switch M4 / ON or OFF	ON: Memorized OFF: Not memorized	Not applicable
Mirror Memory No. 5*	Mirror position memorized in seat memory switch M5 / ON or OFF	ON: Memorized OFF: Not memorized	Not applicable
Mirror Memory No. 6*	Mirror position memorized in seat memory switch M6 / ON or OFF	ON: Memorized OFF: Not memorized	Not applicable

*: Although the item is displayed on the Techstream, it is not applicable to this vehicle.

OK:

ON (Memorized) appears on the screen.

GO TO OTHER DIAGNOSIS PROCEDURE (Power Mirror Surface Position is not Memorized)

5.	CHECK MEMORY AND REACTIVATION FUNCTION

(a) Turn the ignition switch ON.

(b) Using the outer mirror switch assembly, turn the mirror surface to the fully left position.

(d) Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized.

(e) Using the outer mirror switch assembly, turn the mirror surface to the fully right position.

(f) Press the M1 switch.

(g) Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the recorded fully left position.

Result	Proceed to
Memory and reactivation functions on both mirrors are not normal	A
Memory and reactivation functions on driver door mirror are not normal	B
Memory and reactivation functions on front passenger door mirror are not normal	C

Text in Illustration

*a	Turn to Left Fully

REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)

GO TO STEP 8

6.	REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR)

(a) Replace the outer rear view mirror assembly (driver door) (See page ).

7.	CHECK MEMORY AND REACTIVATION FUNCTION

(a) Turn the ignition switch ON.

(b) Using the outer mirror switch assembly, turn the mirror surface to the fully left position.

(d) Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized.

(e) Using the outer mirror switch assembly, turn the mirror surface to the fully right position.

(f) Press the M1 switch.

(g) 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.

Text in Illustration

*a	Turn to Left Fully

END (OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) WAS DEFECTIVE)

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR)

8.	REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR)

(a) Replace the outer rear view mirror assembly (front passenger door) (See page ).

9.	CHECK MEMORY AND REACTIVATION FUNCTION

(a) Turn the ignition switch ON.

(b) Using the outer mirror switch assembly, turn the mirror surface to the fully left position.

(d) Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized.

(e) Using the outer mirror switch assembly, turn the mirror surface to the fully right position.

(f) Press the M1 switch.

(g) 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.

Text in Illustration

*a	Turn to Left Fully

END (OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR) WAS DEFECTIVE)

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (FRONT PASSENGER DOOR)

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