Toyota Venza: Driver Side Power Mirror cannot be Adjusted with Power Mirror Switch

Toyota Venza Service Manual / Mirror (ext) / Power Mirror Control System(w/ Memory) / Driver Side Power Mirror cannot be Adjusted with Power Mirror Switch

SYSTEM DESCRIPTION

When the mirror adjust switch is operated, the main body ECU (driver side junction block assembly) detects the switch operation and sends the mirror adjust switch signal to the outer mirror control ECU assembly (driver door) via CAN communication. On receiving the signal, the outer mirror control ECU assembly (driver door) operates the vertical and horizontal mirror motors, which are built into the outer rear view mirror assembly (driver door), to adjust the mirror surface position.

WIRING DIAGRAM

PROCEDURE

1.	CHECK CAN COMMUNICATION SYSTEM

(a) Check for CAN communication system DTCs (See page ).

OK:

CAN communication DTC is not output.

GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART)

2.	READ VALUE USING TECHSTREAM (OUTER MIRROR SWITCH ASSEMBLY)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch ON.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

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

Main Body

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Mirror Selection SW (L)	Mirror select switch signal for LH mirror / ON or OFF	ON: Mirror select switch in L position OFF: Mirror select switch off or in R position	-
Mirror Position SW (R)	Mirror adjust switch signal (Right) / ON or OFF	ON: Mirror adjust switch pressed right OFF: Mirror adjust switch not pressed right	Check with the mirror select switch in the L position.
Mirror Position SW (L)	Mirror adjust switch signal (Left) / ON or OFF	ON: Mirror adjust switch pressed left OFF: Mirror adjust switch not pressed left	Check with the mirror select switch in the L position.
Mirror Position SW (Up)	Mirror adjust switch signal (Up) / ON or OFF	ON: Mirror adjust switch pressed up OFF: Mirror adjust switch not pressed up	Check with the mirror select switch in the L position.
Mirror Position SW (Dwn)	Mirror adjust switch signal (Down) / ON or OFF	ON: Mirror adjust switch pressed down OFF: Mirror adjust switch not pressed down	Check with the mirror select switch in the L position.

OK:

On the Techstream screen, ON or OFF is displayed for each item according to the table above.

GO TO STEP 6

3.	PERFORM ACTIVE TEST USING TECHSTREAM (POWER MIRROR CONTROL FUNCTION)

(a) Enter the following menus: Body Electrical / Mirror L / Active Test.

(b) Perform the Active Test according to the display on the Techstream.

Mirror L

Tester Display	Test Part	Control Range	Diagnostic Note
Mirror Up/Down	Mirror vertical operation	Up / Down	Operate with ignition switch ON and the vehicle stopped. This test tilts the mirror up or down. This operation can be confirmed by watching the mirror move in the desired direction.
Mirror Right/Left	Mirror horizontal operation	Right / Left	Operate with ignition switch ON and the vehicle stopped. This test tilts the mirror right or left This operation can be confirmed by watching the mirror move in the desired direction.

OK:

Power mirror operation is normal.

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR)

4.	INSPECT OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR)

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

(1) Apply battery voltage and check the operation of the outer rear view mirror assembly (driver door).

OK:

Measurement Condition	Specified Condition
Battery positive (+) → Terminal 5 (MV) Battery negative (-) → Terminal 6 (M+)	Turns upward
Battery negative (-) → Terminal 5 (MV) Battery positive (+) → Terminal 6 (M+)	Turns downward
Battery positive (+) → Terminal 7 (MH) Battery negative (-) → Terminal 6 (M+)	Turns left
Battery negative (-) → Terminal 7 (MH) Battery positive (+) → Terminal 6 (M+)	Turns right

Text in Illustration

*a	Component without harness connected (Outer Rear View Mirror Assembly (Driver Door))

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR)

5.	CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) - OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR))

(a) Disconnect the I11 connector from the outer rear view mirror assembly (driver door).

(b) Disconnect the I12 connector from the outer mirror control ECU assembly (driver door).

Standard Resistance:

Tester Connection	Condition	Specified Condition
I12-9 (LMHR) - I11-7 (MH)	Always	Below 1 Ω
I12-10 (LM+R) - I11-6 (M+)	Always	Below 1 Ω
I12-1 (LMVR) - I11-5 (MV)	Always	Below 1 Ω
I12-9 (LMHR) - Body ground	Always	10 kΩ or higher
I12-10 (LM+R) - Body ground	Always	10 kΩ or higher
I12-1 (LMVR) - Body ground	Always	10 kΩ or higher

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR)

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.	INSPECT OUTER MIRROR SWITCH ASSEMBLY

(a) Remove the outer mirror switch assembly (See page ).

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
3 (M+) - 2 (E)	Mirror adjust switch pressed up	90 to 110 Ω
	Mirror adjust switch pressed down	437 to 503 Ω
	Mirror adjust switch pressed left	744 to 856 Ω
	Mirror adjust switch pressed right	225 to 275 Ω
1 (MSW) - 2 (E)	Mirror select switch L	90 to 110 Ω
	Mirror select switch R	Below 10 Ω
	Mirror select switch off	10 kΩ or higher

Text in Illustration

*A	w/o Retract Mirror
*B	w/ Retract Mirror
*1	Mirror Adjust Switch
*2	Mirror Select Switch
*a	Component without harness connected (Outer Mirror Switch Assembly)

REPLACE OUTER MIRROR SWITCH ASSEMBLY

7.	CHECK HARNESS AND CONNECTOR (OUTER MIRROR SWITCH - MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY))

(a) Disconnect the D72 connector from the outer mirror switch assembly.

(b) Disconnect the D50 connector from the main body ECU (driver side junction block assembly).

Standard Resistance:

Tester Connection	Condition	Specified Condition
D72-2 (E) - D50-2 (MIRE)	Always	Below 1 Ω
D72-3 (M+) - D50-11 (MIRB)	Always	Below 1 Ω
D72-1 (MSW) - D50-12 (MIRS)	Always	Below 1 Ω
D72-2 (E) - Body ground	Always	10 kΩ or higher
D72-3 (M+) - Body ground	Always	10 kΩ or higher
D72-1 (MSW) - Body ground	Always	10 kΩ or higher

REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)

REPAIR OR REPLACE HARNESS OR CONNECTOR

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