AD42.30-S-2001A | Anti-lock brake system (ABS), diagnosis, previous knowledge | 28.9.99 |
MODELS 638.094 /194 as of 1.2.00 with CODE (BB0) Brake system anti-lock brake system ABS
MODEL 638.294 as of 1.2.00
Danger! | Risk of accident through vehicle taking off by itself when operated in raised condition. Risk of injury through contact with rotating parts during operation on running engine or drive train. | Ensure jack stands are securely positioned. | |
Danger! | Risk of fatal injury through trapping or crushing on rotating parts while testing on brake test stand. | Do not leave vehicle while it remains in roller set except in case of emergency. No persons may remain under vehicle or within range of rotating parts during testing. In case of emergency, shut off test stand via emergency stop switch. | |
Danger! | Risk of poisoning from swallowing brake fluid. Risk of injury from skin and eye contact with brake fluid. | Pour brake fluid only into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid. | |
Danger! | Risk of accident when operating vehicle due to faulty braking effect with first actuation of service brake after repair works | Before commissioning the vehicle, operate the brake pedal several times until the pressure in the brake system is built up and maintained. | |
| Important notes for repair work on anti-lock brake system (ABS) | Models 638.094/194, 901, 902, 903, 904 with code BB0 and model 638.294 | |
| If ABS control unit (A2) is disconnected from hydraulic unit, it may not be subsequently installed. | ||
| Anti-lock brake system (ABS) location of components | ||
| Survey of electrical wiring diagrams for brakes, hydraulic and mechanical systems | ||
Connect STAR DIAGNOSIS, read out fault memory | |||
Terminal assignment, control unit, anti-lock brake system (ABS) | |||
Anti-lock brake system (ABS) diagnosis tools | |||
Notes on malfunctions ABS | |||
Function diagram, hydraulic unit ABS/ETS |
Referenced documents
- ad0000s200004a Connect STAR DIAGNOSIS, read fault memory
- ad4230s200101b Pin assignments, anti-lock brake system control module (ABS)
- ad4230s200103a Anti-lock brake system (ABS) diagnosis tools
- ad4230s200107a Notes on ABS operational problems
- ad4230s200201a Function diagram of ABS/ETS hydraulic unit
- ah4230n000201a Important notes concerning repair work on the antilock brake system (ABS)
- as0000z000801a Risk of accident caused by vehicle starting off on its own when jacked up. Risk of injury caused by rotating parts when working on running engine or drive train.
- as4200z000101a Risk of death caused by limbs being caught or crushed by rotating parts when performing tests on the brake test stand
- as4250z000101a Risk of poisoning from swallowing brake fluid. Risk of injury from skin and eye contact with brake fluid
- as4250z000201a Risk of accident when commissioning the vehicle due to a lack of braking effect when the service brake is operated for the first time after repair work.
- gf4230s000303a Anti-lock brake system (ABS), location of components
- pe4200s1100a Survey of wiring diagrams brakes - hydraulic and mechanical systems