Function Description Opel Monterey A

Function Description

General

The ABS system helps the driver maintain greater control of the vehicle by avoiding wheel lock under heavy braking conditions. The ABS system works on all four wheels of the vehicle.

Functional description

The ABS system consists of the ABS control unit, the hydraulic modulator, four wheel speed sensors, the G - sensor and the ABS telltale.

The ABS control unit monitors the speed of each wheel to determine if any wheel is beginning to lock. If a locking condition is detected, brake pressures are automatically adjusted to provide for maximum stopping without wheel lock.

The ABS control unit performs the following four step control cycle 4 to 10 times per second:

· Monitor wheel speed.

· Isolate wheel circuit if wheel decelerates too fast (maintain pressure).

· Reduce wheel circuit pressure if wheel continues to decelerate too fast.

· Increase wheel circuit pressure when wheel acceleration reaches a preset level.

Vehicles equiped with the ABS system have an amber ABS telltale in the instrument panel. The ABS telltale will illuminate if a malfunction in the ABS system is detected by the ABS control unit. In case of an electronic malfunction, the ABS control unit will turn on the ABS telltale and disable the anti - lock braking function.

For MY'92 / '93 vehicles

The ABS telltale will turn on after the ignition is switched "ON" and stays on for approx. 3 seconds after the engine has been started. If the ABS telltale stays on after engine start - up, or comes on and stays on while driving, the ABS system should be inspected for a malfunction.

For MY'94 vehicles