218 Ho Abc (dps) 3-06-02
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R230 Active Body Control (ABC)
218 PP ABC (DPS) 1-22-02
These technical training materials are current as of the date noted on the materials, and may be revised or updated without notice. Always check for revised or updated information. To help avoid personal injury to you or others, and to avoid damage to the vehicle on which you are working, you must always refer to the latest Mercedes-Benz Technical Publication and follow all pertinent instructions when testing, diagnosing or making repair. Illustrations and descriptions in this training reference are based on preliminary information and may not correspond to the final US version vehicles. Refer to the official introduction manual and WIS when available. Copyright Mercedes-Benz USA, LLC, 2002
Reproduction by any means or by any information storage and retrieval system or translation in whole or part is not permitted without written authorization from Mercedes-Benz USA, LLC or its successors. Published by Mercedes-Benz USA, LLC Printed in U. S.A.
Objectives & Agenda •
Quick Review of ABC
Functions of ABC • •
• •
Automatically maintains vehicle level setting Adjusts ride height based on speed – Lowers car as speed increases and raises car back up as speed decreases Switch raises car two positions An additional switch for a sport setting
Sensors - Review •
•
•
•
•
Body acceleration sensors - three – Measures vertical acceleration of the body and body pitch and roll Lateral acceleration sensor - one – Measures side to side acceleration Longitudinal acceleration sensor - one – Measures acceleration and deceleration Vehicle level sensors - four – Measures vehicle level at each wheel Strut motion sensor - four – Determines the position of the hydraulic cylinder
Service Notes - Review • Country version code in EIS • Goes automatically to shutoff (closed valve position) when raised on a lift • SAFETY – Uses same fluid as power steering unit – High Pressure (over 200 bar) – Always depressurize system before removing hydraulic components
218 PP ABC (DPS) 1-22-02
These technical training materials are current as of the date noted on the materials, and may be revised or updated without notice. Always check for revised or updated information. To help avoid personal injury to you or others, and to avoid damage to the vehicle on which you are working, you must always refer to the latest Mercedes-Benz Technical Publication and follow all pertinent instructions when testing, diagnosing or making repair. Illustrations and descriptions in this training reference are based on preliminary information and may not correspond to the final US version vehicles. Refer to the official introduction manual and WIS when available. Copyright Mercedes-Benz USA, LLC, 2002
Reproduction by any means or by any information storage and retrieval system or translation in whole or part is not permitted without written authorization from Mercedes-Benz USA, LLC or its successors. Published by Mercedes-Benz USA, LLC Printed in U. S.A.
Objectives & Agenda •
Quick Review of ABC
Functions of ABC • •
• •
Automatically maintains vehicle level setting Adjusts ride height based on speed – Lowers car as speed increases and raises car back up as speed decreases Switch raises car two positions An additional switch for a sport setting
Sensors - Review •
•
•
•
•
Body acceleration sensors - three – Measures vertical acceleration of the body and body pitch and roll Lateral acceleration sensor - one – Measures side to side acceleration Longitudinal acceleration sensor - one – Measures acceleration and deceleration Vehicle level sensors - four – Measures vehicle level at each wheel Strut motion sensor - four – Determines the position of the hydraulic cylinder
Service Notes - Review • Country version code in EIS • Goes automatically to shutoff (closed valve position) when raised on a lift • SAFETY – Uses same fluid as power steering unit – High Pressure (over 200 bar) – Always depressurize system before removing hydraulic components
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