Kia Carnival (2009+). Instruction — part 385

2009 > G 2.7 DOHC >

REMOVAL

1. Remove the rear wheel speed sensor mounting bolt (A).

2. Remove the rear seat side pad then disconnect the rear wheel speed sensor connector (A).

INSPECTION

1. Measure the output voltage between the terminal of the wheel speed sensor and the body ground.

In order to protect the wheel speed sensor, when measuring output voltage, a 75! resistor must be used as
shown.

2. Compare the change of the output voltage of the wheel speed sensor to the normal change of the output voltage

as shown below.

A. V_low : 0.44 V ~ 0.63 V
B. V_high : 0.885 V ~ 1.26 V
C. Frequency range : 1~2,500 Hz

Brake System

ABS(Anti-Lock Brake System) - EBD (ELEC-
TRONIC BRAKE-FORCE DISTRIBUTION)

Brake System

2009 > G 2.7 DOHC >

DESCRIPTION

The EBD system (Electronic Brake force Distribution) as a sub-system of the ABS system is to control the effective
adhesion utilization by the rear wheels.
It further utilizes the efficiency of highly developed ABS equipment by controlling the slip of the rear wheels in the
partial braking range.
The brake force is moved even closer to the optimum and controlled electronically, thus dispensing with the need for
the proportioning valve.
The proportioning valve, because of a mechanical device, has limitations to achieve an ideal brake force distribution
tothe rear wheels as well as to carry out the flexible brake force distribution proportioning to the vehicle load or weight
increasing. And in the event of malfunctioning, driver cannot notice whether it fails or not.
EBD controlled by the ABS Control Module, calculates the slip ratio of each wheel at all times and controls the brake
pressure of the rear wheels not to exceed that of the front wheels.
If the EBD fails, the EBD warning lamp (Parking brake lamp) lights up.

ADVANTAGES

- Function improvement of the base-brake system.
- Compensation for the different friction coefficients.
- Elimination of the proportioning valve.
- Failure recognition by the warning lamp.

Comparison between Proportioning valve and EBD