Page 2246 - Workshop Manual - Tunland (2017)

71-46 WIRING - SYSTEM CIRCUIT DIAGRAM

Description:

• The anti-lock brake system (ABS) uses the wheel speed sensors to detect the
wheel speed and sends the signal to the control module.The control module adjusts
the slip rate of the wheel and keep the wheel running through increasing or reducing
the braking force on the wheel based on the input wheel speed, which not only
prevents the wheels from being locked but also ensures their steering when the
vehicle is under braking conditions. It can ensure the stability of vehicle's braking
and steering and avoid sideslipping and deviation.

• SIgnal Input
The battery power inputs from fuses F17 and F15 in the engine compartment fuse
box to pin 25 and pin 1 of the ABS control module respectively so as to supply
electric power to the solenoid valve and motor in the ABS control module.
When the ignition switch is ON/ST, current flows from fuse F26 in the body fuse
71
box to pin 28of the ABS control module, supplying electric power for the ignition
switch.

• Wheel speed signal
The wheel speed signal is alternating signals, which is respectively provided by
the following four wheel speed sensors: front left wheel speed sensor, front right
wheel speed sensor, rear left wheel speed sensor and rear right wheel speed
sensor.
• Braking signal

The battery power flows from fuse F2 in the engine compartment fuse box, via the
body fuse box F4 to pin 1 of the brake switch. When the brake pedal is depressed,
current outputs from pin 2 of the brake switch to pin 30 of the ABS control module,
thus inputting the braking signal.

Service tips
• C004 Brake switch

1 - 2: brake pedal operating status, conducted.

：component position

NO. Ref. wiring harness NO. Ref. wiring harness
Engine compartment Engine compartment
A020 A002
harness harness

Front instrument
C037 B002 Frame harness
harness
Front instrument
C004 B003 Frame harness
harness