Toyota 2007 RAV4 - Page 254

RAV4 (EM03T0U)
253
Driving conditions are detected through indicators such as wheel speed, yaw rate sensor and steering angle signals, which
are sent by ECUs, sensors and switches. The current delivered to the solenoid is controlled to provide the optimum torque to
the rear wheels, in accordance with the driving conditions.
∗ Auto mode control
∗ The torque distribution to the rear wheels is increased at vehicle start, to ensure a stable start.
∗ The torque distribution to the rear wheels is reduced during slow speed driving to stabilize.
∗ During stable driving, the torque distribution to the rear wheels is discontinued, making the vehicle front wheel drive and
reducing fuel consumption.
∗ During deceleration using the brakes, the 4 wheel drive is released to enhance the effect of the ABS/VSC control.
∗ Lock mode control
∗ The torque distribution to the rear wheels is fixed at the maximum level.
∗ At vehicle start, the torque distribution to the rear wheels is set at the maximum level to facilitate escape from the stuck
condition.
∗ The mode automatically reverts to auto mode at a vehicle speed of 40 km/h or over.
: Parts Location
Code See Page Code See Page Code See Page
A3 56 B3 53 (2AZ–FE) E19 54
A9
A
50 (2GR–FE) B22 53 (2AZ–FE) E41 55
A9
A
52 (2AZ–FE)
B26
51 (2GR–FE) E50 55
A19
50 (2GR–FE)
B26
53 (2AZ–FE) E57 55
A19
52 (2AZ–FE)
B30
B 51 (2GR–FE) E68 55
A35 56
B30
C 53 (2AZ–FE) E69 55
A36 56 B46 51 (2GR–FE) E70 55
A37 56 E11 54 K6 59
A38 56 E13 54 O1 61
B3 51 (2GR–FE) E17 C 54
:
Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1
22 (2GR–FE)
Engine Room R/B No.1 (Engine Compartment Left)
1
23 (2AZ–FE)
Engine Room R/B No.1 (Engine Compartment Left)
2
26 (2GR–FE)
Engine Room R/B No.2 (Engine Compartment Right)
2
27 (2AZ–FE)
Engine Room R/B No.2 (Engine Compartment Right)
:
Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
3A
38
Instrument Panel Wire and J/B No.3 (Instrument Panel Center)
3B
38
Instrument Panel Wire and J/B No.3 (Instrument Panel Center)
IB 30 Engine Room Main Wire and Instrument Panel J/B (Cowl Side Left)
ID
30
Instrument Panel Wire and Instrument Panel J/B (Cowl Side Left)
IE
30
Instrument Panel Wire and Instrument Panel J/B (Cowl Side Left)
IH
30
Instrument Panel Wire and Instrument Panel J/B (Cowl Side Left)
IM
31
Instrument Panel Wire and Instrument Panel J/B (Cowl Side Left)
IS
31
:
Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
AE4 66 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel)
BA1
64 (2GR–FE)
Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B No.1 and Engine Room J/B No.1)
BA1
65 (2AZ–FE)
Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B No.1 and Engine Room J/B No.1)
EK1
66
Instrument Panel Wire and Floor Wire (Left Kick Panel)
EK2
66
Instrument Panel Wire and Floor Wire (Left Kick Panel)
MK1 67 Floor No.4 Wire and Floor Wire (Left Quarter Panel)
MO1 67 Floor No.4 Wire and Frame No.3 Wire (Near the Rear Differential)
System Outline