Toyota Venza: Initialization

Toyota Venza Service Manual / Sliding Roof / Convertible / Sliding Roof System / Initialization

INITIALIZATION

1. INITIALIZE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)

NOTICE:

When the sliding roof glass, sliding roof housing or sliding roof ECU (sliding roof drive gear sub-assembly) is replaced or removed and installed, the sliding roof drive gear requires initialization (pulse sensor initial position setting), as the glass position cannot be determined. If initialization is not performed, the auto slide open and tilt up functions and jam protection function may not operate, or the sliding roof may move in reverse or become misaligned.
During initialization, do not apply a physical shock, such as opening/closing a door or driving the vehicle at 5 km/h (3 mph) or more, to the vehicle and do not perform the following electrical operations:
1. Cranking the engine
2. Turning the ignition switch from ON to off
3. Operating the power window switches
4. Operating the window defogger switch
5. Operating the blower switch
6. Locking/Unlocking a door
7. Operating the headlight dimmer switch

HINT:

When the cable of the negative (-) battery terminal is disconnected and reconnected or the drive gear connector is disconnected and reconnected, the sliding roof drive gear (pulse sensor initial position setting) initialization is not necessary.

(a) Perform initialization according to the table below.

Condition of Sliding Roof	Proceed to
Auto slide open and tilt up functions do not operate	Procedure A
Sliding roof moves in reverse direction during slide close (tilt down) operation	Procedure B
Sliding roof does not stop at the correct fully closed position during tilt down operation	Procedure C

HINT:

Before performing initialization, make sure that there is no foreign matter on the guide rails and the guide rails are not deformed.

(1) Procedure A

Turn the ignition switch to ON.
Press and hold the SLIDE CLOSE or TILT DOWN switch.
NOTICE:

Make sure not to release the switch during the initialization. If the switch is released, perform the initialization again.
The sliding roof glass starts sliding close operation and stops at the fully closed position.
After the sliding roof glass stops, check that the sliding roof glass moves again and stops at the correct fully closed position.
HINT:

The initialization process ends when this operation completes.

(2) Procedure B

Turn the ignition switch to ON.
Press the SLIDE CLOSE (TILT DOWN) switch until the following movements finish and then release the switch: starts sliding close (tilting down) → erroneously reverses → stops operation for 10 seconds → starts sliding close (tilting down) → stops at the fully closed position.
Perform Procedure A.

(3) Procedure C

Turn the ignition switch to ON.
Press and hold the TILT DOWN switch until the sliding roof glass stops and then release the switch.
Press and hold the TILT DOWN switch again for 10 seconds or more.
The sliding roof glass starts tilting down operation and stops at the fully closed position.
After the sliding roof glass stops, check that the sliding roof glass moves again and stops at the correct fully closed position.
HINT:

The initialization process ends when this operation completes.

Operation Check

OPERATION CHECK 1. CHECK AUTO OPERATION NOTICE: Make sure that initialization is completed before inspection (See page ). HINT: When pressing the switch for 0.3 seconds or less, the roof glass ...

Problem Symptoms Table

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