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BMW E46 Convertible 2000 User Manual

BMW E46 Convertible 2000
48 pages
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Initial Print Date: 02/2000 Revision Date: 03/21/00
Subject Page
Introduction ......................................................................................... 3
System Components
Top and Frame.................................................................................. 4
CVM ......................................................................................... 5
Hydraulic Unit.................................................................................... 6
Hydraulic Cylinders............................................................................ 7
Hydraulic Solenoids........................................................................... 9
Storage Cover Motor......................................................................... 10
Windshield Frame Lock Assembly..................................................... 11
Top Switch ........................................................................................ 12
Hall Sensors...................................................................................... 13
Angle Hall Sensors ............................................................................ 19
Compartment Floor Micro Switch...................................................... 20
I P O ......................................................................................... 22
System Operation................................................................................... 23
Emergency Operation............................................................................. 28
Comfort Operation.................................................................................. 29
Diagnosis ......................................................................................... 30
Hard Top ......................................................................................... 33
Workshop Hints...................................................................................... 35
Roll Over Protection System................................................................... 40
Components...................................................................................... 42
Roll Over Sensor ............................................................................... 44
I P O ......................................................................................... 47
Table of Contents
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BMW E46 Convertible 2000 Specifications

General IconGeneral
BrandBMW
ModelE46 Convertible 2000
CategoryAutomobile
LanguageEnglish

Summary

Introduction to Convertible Top System

System Purpose and Features

Explains the system's function and lists key operational features.

Convertible Top Frame

Top and Frame Construction

Details the construction and layers of the convertible top frame.

Convertible Top Control Module (CVM II)

CVM II Description and Function

Describes the processing, controlling, and monitoring electronics for the convertible top.

Hydraulic Unit

Hydraulic Unit Components and Operation

Details the hydraulic unit, its components, and operating pressure.

Hydraulic Cylinders

Cylinder Types and Locations

Explains the function and location of hydraulic cylinders for various top mechanisms.

Hydraulic Solenoids

Solenoid Valve Functions

Describes the function and location of solenoids controlling hydraulic cylinder operation.

Storage Compartment Cover Lock Motor

Motor Operation and Locking Mechanism

Details the motor responsible for locking and unlocking the storage compartment cover.

Windshield Frame Lock Assembly

Lock Assembly Mechanism and Operation

Explains the lock assembly for securing the windshield frame to the top.

Convertible Top Switch

Switch Operation and Indicator Lights

Describes the switch in the center console used for top operation.

Sensors and Switches Overview

Feedback Mechanisms for Top Operation

Overview of sensors and switches providing feedback for top positioning and sequencing.

Hall Sensors for Top Locking

Cowl Lock and Tension Point Sensors

Details hall sensors that detect the locked status and raised position of the top frame.

Storage Compartment Cover Hall Sensors

Cover Lock Position Sensing

Explains hall sensors that detect the locked/unlocked position of the storage compartment cover.

Storage Compartment Cover Hall Sensor

Cover Position Feedback

Describes the hall sensor for storage cover positioning and switching operation.

Storage Compartment Cover Motor Hall Sensor

Motor Status Sensing

Details the hall sensor on the motor that signals locked/unlocked status of the storage cover.

Hard Top Lock Hall Sensor

Hard Top Installation Detection

Explains the hall sensor used to lock out soft top operation when the hard top is installed.

Angle Hall Sensor - Tension Bow

Tension Bow Position Sensing

Describes the angle sensor determining the position of the tension bow.

Angle Hall Sensor - Main Pillar

Main Pillar Position Sensing

Details the angle sensor used for main pillar positioning during top operation.

Storage Compartment Floor Micro-Switch

Floor Position Interlock

Explains the micro-switch that locks out top operation when the compartment floor is raised.

System Operation: Pre-Conditions and Lowering

Pre-Conditions for Soft Top Operation

Lists conditions that must be met before the soft top can operate.

Top Lowering Sequence

Details the steps involved when the top is operated to lower it.

System Operation: Top Raising Sequence

Steps for Raising the Soft Top

Details the steps involved when the top is operated to raise it.

Hydraulic System Operation

Fluid Pressure and Solenoid Control

Explains how hydraulic fluid pressure and solenoids control cylinder movement.

Emergency Operation

Manual Locking/Unlocking Procedure

Describes the manual procedure for locking/unlocking the storage cover.

Comfort and Safety Features

Comfort Closing/Opening

Explains comfort operation via door lock cylinder or remote key.

Residual Closing/Opening

Details how to finish top operation at speeds above 2 MPH.

Safety in Intermediate Positions

Describes how the system holds position and pressure in intermediate states.

Fault Handling and Diagnostics

Fault Memory Storage

Explains the NVRAM fault memory and storage capacity.

Operation in Event of Faults

Describes how the system behaves when faults occur and troubleshooting steps.

E46iC Manual Top Operation

Manual Top Storage Cover Operation

Details the electrically operated storage cover lock system for the manual top.

Hard Top Installation

Hard Top Attachment Points

Describes how the accessory hard top attaches to the vehicle at four locations.

Workshop Hints: Convertible Removal/Installation

Top Removal and Installation Steps

Covers highlights of soft top removal and installation procedures.

Service Adjustments

Storage Compartment Cover Adjustment

Details adjustments for the storage compartment cover to the body.

Roll Over Protection System (RPS) Introduction

Module Objectives

Outlines the goals of the Roll Over Protection System module.

Roll Over Protection System: Purpose

Purpose of the System

Explains the system's function as a passive safety system.

Roll Over Protection System: Components

Roll Over Bar Cassettes

Describes the aluminum cassettes that house the deployable roll bars.

Roll Over Sensor

Sensor Description and Function

Details the sensor that detects rollover conditions and triggers bar deployment.

Clinometer Sensor

Clinometer Operation for Deployment

Explains the clinometer's role in detecting tilting and acceleration for deployment.

"G" Sensor Operation

G-Sensor Trigger Mechanism

Describes the G-sensor's function in triggering roll bars during airborne conditions.

RPS Diagnosis and Testing

Sensor Diagnosis and Testing Procedures

Outlines procedures for diagnosing and testing the Roll Over Sensor.

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