Anti-lock braking system (ABS) installed at the factory on some models by request. The system is unrepairable.
The system prevents the wheels from locking up, even when braking hard on slippery roads, thus giving the driver full steering control.
Speed sensors monitor the speed of each wheel. Once a wheel is at the lock point, the pressure regulators reduce the hydraulic pressure on that wheel until it begins to spin again. This process is repeated many times every second, guaranteeing maximum braking force.
The driver, when the system is activated, feels vibrations through the brake pedal and is alerted by an acoustic signal. This is done to alert the driver to potential full wheel braking when braking, when the speed must be reduced accordingly.
The system turns on automatically when the engine is started, there is a control lamp. This lamp normally goes out when the engine is running. If not, or if it comes on while driving, test the system by turning it off and on with the main control switch. If the lamp remains lit, this indicates damage to the ABS system - in this case, only normal braking is available.
The master control switch on the panel allows the ABS system to be turned off at the discretion of the driver. Normally, the system should not be disabled unless a brake test is being performed.
Precautions
On vehicles equipped with ABS, observe the following precautions.
- (a) Disconnect the connector from the ECM before body welding
- (b) If the body needs to be heated (e.g. after painting), 85°C for up to two hours, or 95°C for a shorter period is allowed
- (c) Always disconnect the battery before removing the modulator
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