torque TOYOTA RAV4 2006 Service User Guide

CHASSIS - 4WD SYSTEMCH-69
4. Function of Main Components
ComponentFunction
Combination
4WD LOCK
Indicator LightIlluminates to inform the driver of the 4WD LOCK mode control.Combination
Meter4WD
Warning LightIlluminates to warn the driver of a malfunction in the 4WD system.
Speed Sensor (4)Detects the wheel speed of each 4 wheel.
Steering Angle SensorDetects the direction and angle of the steering wheel.
Yaw Rate & Deceleration SensorDetects the vehicle’s longitudinal and lateral acceleration.
Crankshaft Position SensorDetects the engine speed and outputs it to the ECM.
Accelerator Pedal Position SensorDetects the accelerator pedal position and outputs it to the ECM.
Throttle Position SensorDetects the throttle valve position and outputs it to the ECM.
Park / Neutral Position SwitchDetects the neutral position of the transaxle and outputs it to the
ECM.
Stop Light SwitchDetects the brake pedal depressing signal.
Parking Brake SwitchDetects when the parking brake lever is pulled up.
Four-wheel Drive Lock SwitchSwitches between the AUTO and LOCK modes.
4WD ECU
Controls the amperage that is applied to the electromagnetic
solenoid of the electric control coupling based on the signals
provided by the sensors in order to optimally distribute drive torque
in accordance with driving conditions.
ECMOutputs signals such as the shift position signal, throttle position
signal, and crankshaft position signal to the 4WD ECU.
Skid Control ECUOutputs signals such as the vehicle speed signal and deceleration
signal to the 4WD ECU.
Electric Control CouplingDistributes drive torque in accordance with the amperage applied
by the 4WD ECU.

CHASSIS - 4WD SYSTEM
01NCH38Y
Torque Distribution
to Rear WheelsTorque Distribution
to Rear Wheels
Straightline Driving Low-Speed Cornering
01NCH39Y
Torque Distribution
to Rear WheelsTorque Distribution
to Rear Wheels
Steady Driving Straightline Acceleration
NOTICE
In the LOCK mode after the four-wheel drive lock switch is pressed, the system starts control upon
judging that the vehicle is operating in a stable manner. During this judgment, the 4WD LOCK
indicator light blinks.
CH-70
5. System Operation
Auto Mode
1) Starting Off
The system ensures start-off performance by optimally distributing the entire drive torque, which is
transmitted by the engine, to the front and rear wheels.
To prevent the tight corner braking phenomenon from occurring during low-speed cornering, the
system reduces the amount of torque distribution to the rear wheels.
2) Normal Driving
During normal driving, when the system judges that the vehicle is traveling steadily, it reduces the
amount of torque distribution to the rear wheels. This allows the vehicle to operate in conditions
similar to front-wheel-drive, which improves fuel economy.
To ensure excellent acceleration performance during straightline acceleration and excellent driving
stability during cornering, the system controls the amount of torque distribution to the rear wheels.
Lock Mode
When the vehicle is in a situation that poses difficulty for it to pull itself out, such as sand, the driver can
switch to LOCK mode by operating the four-wheel drive lock switch. Thus, this mode effects optimal
control in accordance with the driving conditions and transmits as much drive torque as possible to the rear
wheels, in a mode that is similar to the locked 4WD mode.

PREPARATION – 2AZ-FE ENGINE CONTROL SYSTEMPP–3
PP
EQUIPMENT
Ohmmeter -
Service wire -
Torque wrench -

SERVICE SPECIFICATIONS – U151E AUTOMATIC TRANSMISSIONSS–47
SS
TORQUE SPECIFICATIONS
Automatic Transaxle Assembly
Part Tightened N*m kgf*cm ft*lbf
Park/neutral position switch Nut 6.9 70 61 in.*lbf
Bolt 5.4 55 48 in.*lbf
Control shaft lever x Control shaft 13 133 10
Shift control cable x Control shaft lever 15 153 11
Transaxle housing x Engine block Upper side bolt 64 653 47
Lower side bolt
A37 377 27
Lower side bolt
B46 470 34
Torque converter clutch x Drive plate 41 418 30
Flywheel housing under cover x Automatic transaxle 7.8 80 69 in.*lbf
Front engine mounting bracket x Transaxle 64 653 47
Rear engine mounting bracket x Transaxle 45 459 33
Engine mounting bracket LH x Transaxle 64 653 47
Oil filler tube x Transaxle
Oil filler tube x Front engine mounting bracket5.5 56 49 in.*lbf
Control cable bracket No. 1 x Transaxle 12 122 9
Control cable bracket No. 2 x Transaxle 12 122 9
Oil cooler inlet elbow x Transaxle 27 276 20
Oil cooler outlet elbow x Transaxle 27 276 20
Starter x Transaxle37 377 27
Starter wire x Starter9.8 100 88 in.*lbf
Speed sensor (NC) x Transaxle 11 112 8
Speed sensor (NT) x Transaxle 11 112 8
Drain plug x Oil pan47 479 35
Transmission wire x Transaxle 5.4 55 48 in.*lbf
ATF temperature sensor x Valve body 6.6 67 58 in.*lbf
Oil pan x Transaxle7.8 80 69 in.*lbf
Solenoid valve x Valve body SL2, DSL, S4 11 110 8
SL1, SL3 6.6 67 58 in.*lbf
Valve body x Transaxle11 11 2 8
Oil strainer x Valve body11 11 2 8
Floor shift assembly x Body12 122 9
Control cable clamp x Engine mounting insulator 12 122 9
Differential gear lube apply tube x Transaxle housing 9.8 100 87 in.*lbf
Front planetary gear lock nut 280 3,355 207
Brake apply tube clamp x Transaxle case 5.4 55 48 in.*lbf
Transaxle case No. 1 plug x Transaxle rear cover 7.4 75 65 in.*lbf
Transaxle rear cover x Transaxle case Bolt A 19 194 14
Other bolt 25 255 18
Parking lock pawl shaft x Transaxle case 9.8 100 87 in.*lbf
Oil pump assembly x Transaxle case 22 226 16
Transaxle housing x Transaxle case Bolt A 22 254 16
Bolt B 29 295 21
Bolt C 29 295 21
Bolt D 22 254 16
Automatic transmission case plug x Transaxle housing 7.4 75 65 in.*lbf
Automatic transmission case plug x Transaxle case 7.4 75 65 in.*lbf

SERVICE SPECIFICATIONS – DIFFERENTIALSS–75
SS
TORQUE SPECIFICATIONS
Differential
Part Tightened N*m kgf*cm ft.*lbf
Rear differential No. 2 support x
Rear suspension member86 877 63
Rear differential support x Rear
suspension member140 1,428 103
Rear differential No. 2 support x
Rear differential
Rear differential No. 1 support x
Rear differential55 561 41
Rear differential support x Rear
differential98 999 72
Drain plug x Differential carrier
Filler plug x Differential carrier39 398 29
Electromagnetic coupling x Stud
bolt8.0 82 71 in.*lbf
Electromagnetic coupling x
Differential carrier19.6 200 14
Yoke x Differential carrier 5.0 51 44 in.*lbf
Drive pinion nut x Differential
drive pinion245 or less 2,498 or less 181 or less
Differential side bearing retainer x
Differential carrier34.3 350 25
Differential carrier x Differential
breather plug oil deflector5.0 51 44 in.*lbf
Differential ring gear x Differential
case90 918 66

ES–4302AZ-FE ENGINE CONTROL SYSTEM – ECM
ES
(d) Remove the 4 screws and 2 ECM brackets.
INSTALLATION
1. INSTALL ECM
(a) Install the 2 brackets to the ECM with the 4 screws.
Torque: 3.0 N*m (30 kgf*cm, 27 in.*lbf)
(b) Connect the 2 ECM connectors.
NOTICE:
When connecting the connector, make sure that
dirt, water and other foreign matter does not
become stuck between the connector and other
part.
(1) Connect the 2 ECM connectors and lower the 2
levers.
NOTICE:
Make sure that the 2 levers are securely
lowered.
(c) Install the ECM with the 3 bolts.
Torque: 6.5 N*m (66 kgf*cm, 57 in.*lbf)
A124573
A124573
A124572
A124570

2AZ-FE ENGINE CONTROL SYSTEM – ECMES–431
ES
2. INSTALL AIR CLEANER CASE
(a) Install the air cleaner case with the 3 bolts.
Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf)
(b) Connect the harness clamp.
3. INSTALL AIR CLEANER CAP (See page ES-413)
4. CONNECT CABLE TO NEGATIVE BATTERY
TERMINAL
5. PERFORM REGISTRATION
(a) When replacing the ECM, the Vehicle Identification
Number (VIN) must be input into the replacement
ECM (see page ES-13).
(b) When replacing the ECM, perform the vehicle
stability control system recognition in the ECM (see
page CC-12).
6. RESET MEMORY
(a) When replacing the ECM, perform the RESET
MEMORY procedure (A/T initialization) (see page
AX-18).
A124563

2GR-FE ENGINE CONTROL SYSTEM – ECMES–471
ES
INSTALLATION
1. INSTALL ECM
(a) Install the 2 brackets to the ECM with the 4 screws.
Torque: 3.0 N*m (30 kgf*cm, 27 in.*lbf)
(b) Connect the 2 ECM connectors.
NOTICE:
When connecting the connector, make sure that
dirt, water and other foreign matter does not
become stuck between the connector and other
part.
(1) Connect the 2 ECM connectors and lower the 2
levers.
NOTICE:
Make sure that the 2 levers are securely
lowered.
(c) Install the ECM with the 3 bolts.
Torque: 6.5 N*m (66 kgf*cm, 57 in.*lbf)
2. INSTALL AIR CLEANER CASE (See page EM-39)
3. INSTALL AIR CLEANER CAP (See page EM-39)
4. CONNECT CABLE TO NEGATIVE BATTERY
TERMINAL
5. PERFORM REGISTRATION
(a) When replacing the ECM, the Vehicle Identification
Number (VIN) must be input into the replacement
the new ECM (see page ES-14).
(b) When replacing the ECM, perform the vehicle
stability control system recognition in the ECM (see
page CC-12).
6. RESET MEMORY
(a) 2WD:
When replacing the ECM, perform the RESET
MEMORY procedure (A/T initialization) (see page
AX-20).
(b) 4WD:
When replacing the ECM, perform the RESET
MEMORY procedure (A/T initialization) (see page
AX-20).
A124573
A124572
A124570

2AZ-FE ENGINE MECHANICAL – DRIVE BELTEM–7
EM
REMOVAL
1. REMOVE RADIATOR SUPPORT OPENING COVER
2. REMOVE FRONT WHEEL RH
3. REMOVE FRONT FENDER APRON RH
4. REMOVE FRONT SUSPENSION MEMBER
REINFORCEMENT RH
(a) Remove the 4 bolts and reinforcement RH.
5. REMOVE FAN AND GENERATOR V BELT
(a) Using SST and 19 mm socket wrench, loosen the V-
ribbed belt tensioner arm clockwise, then remove
the fan and generator V belt.
SST 09216-42010
NOTICE:
• Be sure to connect SST and the tools so that
they are in line during use.
• When retracting the tensioner, turn it
clockwise slowly for 3 seconds or more. Do
not apply force rapidly.
• After the tensioner is fully retracted, do not
apply force any more than necessary.
INSTALLATION
1. INSTALL FAN AND GENERATOR V BELT
(a) Using SST and 19 mm socket wrench, loosen the V-
ribbed belt tensioner arm clockwise, then install the
fan and generator V belt.
SST 09216-42010
NOTICE:
• Be sure to connect SST and the tools so that
they are in line during use.
• When retracting the tensioner, turn it
clockwise slowly for 3 seconds or more. Do
not apply force rapidly.
• After the tensioner is fully retracted, do not
apply force any more than necessary.
2. INSTALL FRONT SUSPENSION MEMBER
REINFORCEMENT RH
(a) Install the reinforcement RH with the 4 bolts.
Torque: 96 N*m (979 kgf*cm, 71 ft.*lbf)
3. INSTALL FRONT FENDER APRON RH
4. INSTALL FRONT WHEEL RH
5. INSTALL RADIATOR SUPPORT OPENING COVER
A114351E01
A114351E01

EM–242GR-FE ENGINE MECHANICAL – ENGINE ASSEMBLY
EM
(b) 4WD:
Disconnect the control cable (see page AX-154).
31. REMOVE FRONT EXHAUST PIPE ASSEMBLY (See
page EX-3)
32. REMOVE CENTER EXHAUST PIPE ASSEMBLY (See
page EX-2)
33. REMOVE PROPELLER WITH CENTER BEARING
SHAFT ASSEMBLY (See page PR-3)
34. REMOVE FRONT WHEELS
35. REMOVE FRONT AXLE HUB NUT LH
(a) Remove the hub nut (see page AH-8).
36. REMOVE FRONT AXLE HUB NUT RH
(a) Remove the hub nut (see page AH-8).
37. DISCONNECT FRONT STABILIZER LINK ASSEMBLY
LH (See page SP-30)
38. DISCONNECT FRONT STABILIZER LINK ASSEMBLY
RH (See page SP-30)
39. DISCONNECT STEERING INTERMEDIATE SHAFT
(See page PS-44)
40. DISCONNECT TIE ROD END SUB-ASSEMBLY RH
(See page PS-42)
41. DISCONNECT TIE ROD END SUB-ASSEMBLY LH
(See page PS-42)
42. REMOVE FRONT DRIVE SHAFT LH
(a) 2WD:
Remove the drive shaft (see page DS-10).
(b) 4WD:
Remove the drive shaft (see page DS-43).
43. REMOVE FRONT DRIVE SHAFT RH
(a) 2WD:
Remove the drive shaft (see page DS-10).
(b) 4WD:
Remove the drive shaft (see page DS-43).
44. REMOVE ENGINE WITH TRANSAXLE
(a) Install the No. 1 and No. 2 engine hangers with the
4 bolts as shown in the illustration.
Torque: 33 N*m (337 kgf*cm, 24 ft.*lbf)
HINT:
• Insert the claw of the hanger into hole of the
cylinder head.
• Fit the fork part of the hanger onto the rib of the
cylinder head.
A129635E02
Part Name Part No.
No. 1 engine hanger 12281-31120
No. 2 engine hanger 12282-31100
Bolt 91671-10825