Part 2
INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION - Continued
9. WHEN SERVICING ACTIVE TORQUE CONTROL 4WD VEHICLES
(a) The active torque control 4WD RAV4 is equipped with the 4 wheel drive control system.
If incorrect preparations or test procedures are used, the test will not only be unsuccessful, but may be dangerous as well.
CAUTION:
* Never accelerate or decelerate the vehicle suddenly.
* Observe the other cautions given for each individual test.
NOTICE:
* Sudden shifting, braking, acceleration or deceleration is not allowed.
* Do not use the parking brake while the vehicle's wheels are rotating.
* Do not perform the measurements continuously for a long period of time.
* Make sure to activate the Vehicle Stability Control (VSC) & Traction Control (TRAC) system to an operational condition after the test. Check that the VSC warning indicator light goes off when restarting the engine.
Therefore, before beginning any such servicing or test, be sure to check the following items:
(1) Whether the tires are touching the ground or jacked up
(2) Transmission gear position
(3) Maximum testing vehicle speed
(4) Maximum testing time
(b) When using a braking force tester (not free roller type):
When performing measurements using a low-speed type (Vehicle Speed: Below 0.5 km/h or 0.3 mph) brake tester, observe the following instructions.
(1) Press the 4WD LOCK-MODE SWITCH to OFF to disable the 4WD system.
(2) If the vehicle is equipped with the Vehicle Stability Control (VSC) & Traction Control (TRAC) system, prohibit the system from activating.
Position the front wheels to be tested on the tester.
(4) Jack up the rear wheels.
(5) Ensure that the vehicle does not move using wires.
(6) Shift the transmission shift lever to the "N" position.
(7) Idle the engine, operate the brake booster and perform the test.
CAUTION:
The maximum driving time should be 1 minute.
(c) When using a braking force tester (free roller type):
When performing measurements using a low-speed type (Vehicle Speed: Below 0.5 km/h or 0.3 mph) brake tester, observe the following instructions.
(1) Press the 4WD LOCK-MODE SWITCH to turn it OFF and disable the 4WD system.
(2) If the vehicle is equipped with the Vehicle Stability Control (VSC) & Traction Control (TRAC) system, prohibit the system from activating.
Position the front wheels on the tester roller.
(4) Position the rear wheels on the free roller.
(5) Ensure that the vehicle does not move using wires.
(6) Shift the transmission shift lever to the "N" position.
(7) Idle the engine, operate the brake booster and perform the test.
CAUTION:
The maximum driving time should be 1 minute.
(d) When using a speedometer (not free roller type):
Observe the following instructions and then measure with the rear wheels.
(1) Press the 4WD LOCK-MODE SWITCH to turn it OFF and disable the 4WD system.
(2) If the vehicle is equipped with the Vehicle Stability Control (VSC) & Traction Control (TRAC) system, prohibit the system from activating.
Position the front wheels on the tester.
(4) Jack up the rear wheels.
(5) Ensure that the vehicle does not move using wires.
(6) Shift the transmission shift lever to the "D" position.
CAUTION:
* The maximum speed should be less than 50 km/h (31 mph).
* If the measurement is required with over 50 km/h (31 mph), remove the propeller shaft.
(e) When using a speedometer (free roller type):
Observe the following instructions and then measure with the rear wheels.
(1) Press the 4WD LOCK-MODE SWITCH to turn it OFF and disable the 4WD system.
(2) If the vehicle is equipped with the Vehicle Stability Control (VSC) & Traction Control (TRAC) system, prohibit the system from activating.
(3) Position the front wheels on the tester roller.
(4) Position the rear wheels on the free roller.
(5) Ensure that the vehicle does not move using wires.
(6) Shift the transmission shift lever to the "D" position.
CAUTION:
* The maximum speed should be less than 50 km/h (31 mph).
* If the measurement is required with over 50 km/h (31 mph), remove the propeller shaft.
(f) Using chassis dynamometer
NOTICE:
CAUTION:
When performing high speed, high load measurements on a chassis dynamometer, observe the following instructions and then measure with the front wheels.
(1) If the vehicle is equipped with the Vehicle Stability Control (VSC) & Traction Control (TRAC) system, prohibit the system from activating.
(2) Ensure that the vehicle is securely fixed in place.
HINT
* Sudden shifting, braking, acceleration or deceleration is not allowed.
* Make sure to activate the Vehicle Stability Control (VSC) & Traction Control (TRAC) system after the test. Check that the VSC warning indicator light goes off when restarting the engine.
(g) On-Vehicle Wheel Balancing:
When performing on-vehicle wheel balancing on an active torque control 4WD vehicle, to prevent each wheel from being rotated at a different speed and in different directions, always be sure to observe the following precautions.
(1) All 4 wheels should be jacked up and lifted off of the ground completely.
(2) Press the 4WD LOCK-MODE SWITCH to turn it OFF and disable the 4WD system.
CAUTION:
Propeller shaft should be removed.
(3) If the vehicle is equipped with a Vehicle Stability Control (VSC) system, prohibit the system from activating (see previous step).
(4) The parking brake lever should be fully released.
(5) None of the brakes should be applied.
(6) The wheels should be driven on the wheel balancer with the engine running.
(7) Carry out the wheel balancing with the transmission in the D position.
HINT
* When performing the wheel balancing, pay attention to the other wheels rotating at the same time.
* Sudden acceleration, deceleration or braking is not allowed.
* Do not forget to change the Vehicle Stability Control (VSC) system to an operational condition after the test. Check that the VSC warning indicator light goes off when restarting the engine.
10. PRECAUTIONS FOR TOWING FRONT WHEEL DRIVE VEHICLES
(a) Use one of the following methods to tow the vehicle.
(b) If the vehicle has trouble with the chassis or drivetrain, use method 1 (flatbed truck).
NOTICE:
Do not use any towing method other than those shown above.
(c) If a tow truck is not available, in an emergency the vehicle may be temporarily towed using a cable or chain secured to the emergency towing eyelet(s). This should only be attempted on hard surfaced roads for distances of less than 80 km, and at speeds below 30 km/h (19 mph).
A driver must be in the vehicle to steer and operate the brakes. The vehicle's wheels, drivetrain, axles, steering and brakes must be in good condition.
NOTICE:
If the towing speed or distance exceeds the above limits, or the vehicle is towed in a backward direction with the front wheels on the ground, the transaxle may be damaged.
(1) Emergency towing procedure
1 Turn the ignition switch to ON.
2 Depress the brake pedal and move the transmission shift lever to N.
3 Release the parking brake.
4 Release the brake pedal slowly.
NOTICE:
* Use extreme caution when towing the vehicle. Avoid sudden starts or erratic driving maneuvers which place excessive stress on the emergency towing eyelet and the cables or chains.
* Do not turn off the ignition switch. Turning off the ignition switch may result in engagement of the steering lock, resulting in a hazardous situation or accident.
(d) The following towing methods shown below are dangerous and can damage the vehicle, so do not use them.
(1) Do not tow the vehicle facing rearward with the front wheels on the ground.
NOTICE:
* If the vehicle is towed facing rearward with the front wheels on the ground, the drivetrain may overheat and be damaged.
* In addition, if the vehicle is equipped with the VSC system, the system may apply the brakes to the rotating wheels.
(2) Do not use a sling-type towing method either from the front or rear.
NOTICE:
If a sling-type tow truck is used, damage may occur to the vehicle body.
11. PRECAUTIONS FOR TOWING ACTIVE TORQUE CONTROL 4WD VEHICLES
(a) Use one of the following methods to tow the vehicle.
(b) If the vehicle has trouble with the chassis or drivetrain, use method 1 (flatbed truck).
NOTICE:
Do not use any towing method other than those shown above.
(c) If a tow truck is not available, in an emergency the vehicle may be temporarily towed using a cable or chain secured to the emergency towing eyelet(s).
This should only be attempted on hard surfaced roads for distances of less than 80 km, and at speeds below 30km/h (19 mph).
A driver must be in the vehicle to steer and operate the brakes. The vehicle's wheels, drivetrain, axles, steering and brakes must be in good condition.
NOTICE:
If the towing speed or distance exceeds the above limits, or the vehicle is towed in a backward direction with any of the wheels on the ground, the drivetrain may be damaged.
(1) Emergency towing procedure
1 Turn the ignition switch to ON.
2 for Manual Transmission:
Depress the brake pedal and move the transmission shift lever to neutral.
3 for Automatic Transmission:
Depress the brake pedal and move the transmission shift lever to N.
4 Release the parking brake.
5 Release the brake pedal slowly.
NOTICE:
* Use extreme caution when towing the vehicle. Avoid sudden starts or erratic driving maneuvers which place excessive stress on the emergency towing eyelet and the cables or chains.
* Do not turn off the ignition switch. Turning off the ignition switch may result in engagement of the steering lock, resulting in a hazardous situation or accident.
(d) The towing methods shown below are dangerous and can damage the vehicle, so do not use them.
(1) Do not tow the vehicle with only 2 wheels on the ground.
NOTICE:
If the vehicle is towed with only the 2 wheels on the ground, the drivetrain may overheat and be damaged or the wheels may come off the dollies.
(2) Do not use a sling-type towing method either from the front or rear.
NOTICE:
If a sling-type tow truck is used, damage may occur to the vehicle body.
12. FOR VEHICLES EQUIPPED WITH CATALYTIC CONVERTER
CAUTION:
If a large amount of unburned gasoline or gasoline vapors flow into the converter, it may cause overheating and create a fire hazard. To prevent this, observe the following precautions.
(a) Use only unleaded gasoline.
(b) Avoid idling the engine for more than 20 minutes.
(c) Avoid performing unnecessary spark jump tests.
(1) Perform a spark jump test only when absolutely necessary. Perform this test as rapidly as possible.
(2) While testing, never race the engine.
(d) Avoid a prolonged engine compression measurement. Engine compression measurements must be performed as rapidly as possible.
(e) Do not run the engine when the fuel tank is nearly empty. This may cause the engine to misfire and create an extra load on the converter.
13. INSPECTION AND ADJUSTMENT OF JOINT ANGLE DURING REMOVAL AND INSTALLATION OF PROPELLER SHAFT (4WD)
(a) When performing operations which involve the removal and installation of the propeller shaft, always check the joint angle. Make adjustments if necessary Component Tests and General Diagnostics.
