Toyota Venza: Sliding Roof does not Move by Operating Sliding Roof Control Switch

Toyota Venza Service Manual / Sliding Roof / Convertible / Sliding Roof System / Sliding Roof does not Move by Operating Sliding Roof Control Switch

DESCRIPTION

The sliding roof ECU (sliding roof drive gear sub-assembly) receives switch slide and tilt signals and drives its built-in motor.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.
When the sliding roof ECU (sliding roof drive gear sub-assembly) is reinstalled or replaced, the sliding roof drive gear sub-assembly must be initialized (See page ).

Since the sliding roof system uses LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the How to Proceed with Troubleshooting procedure (See page ). Then, conduct
the following inspection procedure.

PROCEDURE

1.	PERFORM ACTIVE TEST USING TECHSTREAM (SLIDING ROOF OPERATION)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Body Electrical / Sliding Roof / Active Test.

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

Sliding Roof (Sliding Roof ECU (Sliding Roof Drive Gear Sub-assembly))

Tester Display	Test Part	Control Range	Diagnostic Note
Slide Roof	Operate sliding roof	CLOS/UP / OFF	-
Slide Roof	Operate sliding roof	OPN/DWN / OFF	-

OK:

Sliding roof operates normally.

GO TO STEP 3

2.	READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

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

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

Sliding Roof (Sliding Roof ECU (Sliding Roof Drive Gear Sub-assembly))

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Open SW	SLIDE OPEN switch signal/ON or OFF	ON: SLIDE OPEN switch pressed OFF: SLIDE OPEN switch not pressed	-
Close SW	SLIDE CLOSE switch signal/ON or OFF	ON: SLIDE CLOSE switch pressed OFF: SLIDE CLOSE switch not pressed	-
Up SW	TILT UP switch signal/ON or OFF	ON: TILT UP switch pressed OFF: TILT UP switch not pressed	-
Down SW	TILT DOWN switch signal/ON or OFF	ON: TILT DOWN switch pressed OFF: TILT DOWN switch not pressed	-

OK:

The Techstream display changes according to switch operation as shown in the table.

REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)

GO TO STEP 4

3.	CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU - BATTERY, BODY GROUND)

(a) Disconnect the P4 ECU connector.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
P4-1 (B) - Body ground	Always	11 to 14 V
P4-5 (IG) - Body ground	Ignition switch ON	11 to 14 V
P4-5 (IG) - Body ground	Ignition switch off	Below 1 V

Standard Resistance:

Tester Connection	Condition	Specified Condition
P4-2 (E) - Body ground	Always	Below 1 Ω

Text in Illustration

*1	Front view of wire harness connector (to Sliding Roof ECU (Sliding Roof Drive Gear Sub-assembly))

REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU - SLIDING ROOF SWITCH ASSEMBLY)

(a) Disconnect the P6 switch connector.

(b) Disconnect the P4 ECU connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
P4-9 (CLS) - P6-2 (CLS)	Always	Below 1 Ω
P4-9 (CLS) - Body ground	Always	10 kΩ or higher
P4-7 (OPN) - P6-3 (OPN)	Always	Below 1 Ω
P4-7 (OPN) - Body ground	Always	10 kΩ or higher
P4-8 (DWN) - P6-4 (DOWN)	Always	Below 1 Ω
P4-8 (DWN) - Body ground	Always	10 kΩ or higher
P4-10 (UP) - P6-5 (UP)	Always	Below 1 Ω
P4-10 (UP) - Body ground	Always	10 kΩ or higher
P6-1 (GND) - Body ground	Always	Below 1 Ω
P4-2 (E) - Body ground	Always	Below 1 Ω

Text in Illustration

Front view of wire harness connector

(to Sliding Roof ECU (Sliding Roof Drive Gear Sub-assembly))

Front view of wire harness connector

(to Sliding Roof Switch (Roof Console Box Assembly))

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	INSPECT SLIDING ROOF SWITCH (ROOF CONSOLE BOX ASSEMBLY)

(a) Remove the sliding roof switch (roof console box assembly) (See page ).

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
P6-4 (DOWN) - P6-1 (GND)	TILT DOWN switch is pressed	Below 1 Ω
P6-4 (DOWN) - P6-1 (GND)	TILT DOWN switch is not pressed	10 kΩ or higher
P6-5 (UP) - P6-1 (GND)	TILT UP switch is pressed	Below 1 Ω
P6-5 (UP) - P6-1 (GND)	TILT UP switch is not pressed	10 kΩ or higher
P6-2 (CLS) - P6-1 (GND)	SLIDE CLOSE switch is pressed	Below 1 Ω
P6-2 (CLS) - P6-1 (GND)	SLIDE CLOSE switch is not pressed	10 kΩ or higher
P6-3 (OPN) - P6-1 (GND)	SLIDE OPEN switch is pressed	Below 1 Ω
P6-3 (OPN) - P6-1 (GND)	SLIDE OPEN switch is not pressed	10 kΩ or higher

Text in Illustration

*1	Component without harness connected Sliding Roof Switch (Roof Console Box Assembly)

REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)

REPLACE SLIDING ROOF SWITCH (ROOF CONSOLE BOX ASSEMBLY)

Sensor (Motor) Failure (B2341,B2344)

DESCRIPTION When the sliding roof ECU (sliding roof drive gear sub-assembly) detects a motor malfunction and the sliding roof operation is stopped, DTC B2341 is output. When the sliding roof ECU ( ...

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