Toyota RAV4 manuals

Toyota Sienna Service Manual: System description

1. SYSTEM DESCRIPTION

(a) ABS

(Anti-lock Brake System) The ABS helps prevent wheels from locking when the brake is applied firmly or when braking on a slippery surface.

(b) EBD

(Electronic Brake force Distribution) The EBD control utilizes ABS, realizing proper brake force distribution between front and rear wheels in accordance with driving conditions. In addition, during cornering braking, it also controls the brake force of the right and left wheels, helping to maintain vehicle behavior.

(c) BA (Brake Assist)

The primary purpose of the brake assist system is to provide an auxiliary brake force to assist the driver who cannot generate a large enough brake force during emergency braking, thus helping to maximize the vehicle's brake performance.

(d) TRAC

(Traction Control) The TRAC system helps prevent the drive wheels from slipping if drive presses down on the accelerator pedal excessively when starting off or accelerating on a slippery surface.

(e) VSC

(Vehicle Stability Control) The VSC system helps prevent the vehicle from slipping sideways as a result of strong front wheel skid or strong rear wheel skid during cornering.

Vehicle stability control system
Parts location ...

How to proceed with troubleshooting
The intelligent tester can be used at step 2, 5, 8, 11. 1 Vehicle Brought to Workshop 2 Check and Clear DTCs and Freeze Frame Data HINT: See page BC-82 and BC-84. 3 Problem Symptom Confirmati ...

Other materials:

Improper Aiming of Radar Sensor Beam Axis
DTC P1572 Improper Aiming of Radar Sensor Beam Axis DESCRIPTION This DTC is output when the scanning angle of the laser sensor is incorrect. This DTC is also output when the laser sensor beam axis is determined to be in an incorrect position. DTC No. DTC Detection Condition ...

Open in Front Pretensioner Squib RH Circuit
DTC B0131/64 Open in Front Pretensioner Squib RH Circuit DESCRIPTION The front pretensioner squib RH circuit consists of the center airbag sensor assembly and the front seat outer belt assembly RH. This circuit instructs the SRS to deploy when deployment conditions are met. DTC B0131/64 i ...

Evap monitor (key-off type)
(a) Preconditions The monitor will not run unless: The fuel tank is less than 90% full. The altitude is less than 8000 ft (2450 m). The vehicle is stationary. The engine coolant temperature is between 4.4°C and 35°C (40°F and 95°F). The intake air temperature is between 4.4°C and ...

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