Toyota RAV4 manuals

Toyota Sienna Service Manual: When servicing full-time 4wd vehicles

Toyota Sienna Service Manual / Introduction / Repair instruction / Precaution / When servicing full-time 4wd vehicles

The full-time 4WD SIENNA is equipped with the open center differential system.

If incorrect preparations or test procedures are used, the test will not only be unsuccessful, but may be dangerous as well.

Therefore, before beginning any such servicing or test, be sure to check the following items:

CAUTION: • Never accelerate or decelerate the vehicle suddenly • Observe the other cautions given for each individual test

(a) Before Beginning Test

This vehicle does not have a center diff. lock mode or 4WD (Normal) Mode to allow only the front or rear wheel to be rotated.

The test method for this vehicle is different from that for vehicles equipped with the center diff. lock mode or 4WD (Normal) Mode, so make sure to use the correct test method.

Braking Force Test Braking Force Test

(Vehicle Speed: Below 0.5 km/h or 0.3 mph) When performing low-speed type brake tester measurements, observe the following instructions.

(1) Position the wheels to be tested (front or rear) on the tester.

(2) Shift the transaxle shift lever to "N" position.

(3) Idle the engine, operate the brake booster and perform the test.

(c) Speedometer Test or Other Tests

(Using Speedometer Tester or Chassis Dynamometer)

When performing test at high speed or high load, use the methods shown below.

*: This is to avoid damaging the center differential.

NOTICE: • Confirm that the vehicle is securely immobilized. • Never operate the brakes to drive the wheels or stop them suddenly.

(d) On-Vehicle Wheel Balancing

On-Vehicle Wheel Balancing
On-Vehicle Wheel Balancing

When doing on-vehicle wheel balancing on a fulltime 4WD vehicle, to prevent the wheels from rotating at different speeds in different directions from each other (which could damage the center differential), always be sure to observe the following precautions:

(1) All 4 wheels should be jacked up, clearing the ground completely.

(2) The parking brake lever should be fully released.

(3) None of the brakes should be allowed to drag.

(4) The wheels should be driven on the wheel balancer with the engine running.

HINT:

When doing this, be careful of the other wheels, which will rotate at the same time.

(5) Avoid sudden acceleration, deceleration and braking.

(6) Carry out wheel balancing with the transaxle in D position.

For vehicles equipped with mobile communication systems
FOR VEHICLES EQUIPPED WITH MOBILE COMMUNICATION SYSTEMS (a) Install the antenna far away from the ECU and sensors of the vehicle electronic systems as possible. (b) Install an antenna feeder ...

For vehicles equipped with traction control (trac) system
When using a 2-wheel drum tester such as a speedometer tester or chassis dynamometer, etc., or jacking up the front wheels and driving the wheels, always push in the TRAC cut ("TRAC OFF") ...

Other materials:

SRS Warning Light Remains ON
DESCRIPTION The SRS warning light is located on the combination meter assembly. When the SRS is normal, the SRS warning light comes on for approximately 6 seconds after the ignition switch is turned from the LOCK position to ON position, and then goes off automatically. If there is a mal ...

Installation
1. INSTALL WINDSHIELD WIPER MOTOR ASSEMBLY  Apply MP grease to the crank arm pivot of the windshield wiper motor assembly.  Install the windshield wiper motor assembly with the 3 bolts to the windshield wiper link assembly. Torque: 7.5 N*m (76 kgf*cm, 66 in.*lbf) 2. INST ...

Canceling and resuming the speed control
Pulling the lever toward you cancels the cruise control. The speed setting is also canceled when the brakes are applied. Pushing the lever up resumes the cruise control and returns vehicle speed to the set speed. Resuming is available when the vehicle speed is more than approxi ...

© 2011-2019 Copyright www.tsienna.net