Contents

Tightening torques

Diagnostics

• Battery - Troubleshooting Table
• Generator - Troubleshooting Table
• Short circuits
• Open circuit
• Grounding problems

Components

• Multimeter
• Oscilloscope
• Signal measurements
• Inductive sensor
• Vehicle speed sensor
• Temperature sensor
• Pressure sensor
• Generator
• Heated windshield relay
• Diagnostics of electrical systems

Wiring repair

• Connector
• Contact sets
• Removal and installation, connectors
• Removal and installation, contacts
• Installation of contacts on electrical wires
• Installing the SCAT seal
• Setting up the electrical buffer connection
• Removal and Installation, Ground Wire
• CAN network wiring repair

Batteries

• Safety instructions
• Battery charging
• Charging methods
• Storage up to four weeks
• Storage for more than four weeks
• Visual inspection
• Checking the charging status
• Battery test using a tester

Connecting accessories

• General information
• Connecting backup wires
• General connection diagram
• Dashboard Connector Diagram
• Connector diagram for engine speed control
• Automatic transmission connector diagram
• 12V socket in roof console
• Radio connectors

Reading charts

List of abbreviations

Wire marking

Reading electrical circuits

Reading charts

Component placement

• General arrangement of components
• Component arrangement in relation to circuit diagram 1427090 / 03-04

Location of connectors

• Connector List
• Drawings showing the location of the connectors

Wiring diagrams

• Schematic diagram 1427090/03
• Overview of basic circuit codes 1427090/03
• Schematic diagrams 1427090/03

Changes in electrical circuits

• Changes to the electrical system from chassis number 0L247507
• Overview of changes in the electrical system
• Schematic diagram 1427090/04
• Overview of basic circuit codes 1427090/04
• Schematic diagrams 1427090/04