Engine Electrical System - Repair Instructions

• Firing Order
  • Firing Order
• Troubleshooting
  • 12 00 Contents of Engine Electrical System General
  • 12 00 ... Instructions For Disconnecting And Connecting Battery
    • Notes
    • Vehicles With A Two-Battery System
  • 12 00 ... Information On Working On Ignition System
  • 12 00 ... Instructions For Removing And Installing Electronic Control Units
  • 12 00 ... Instructions For Welding Work (Overload Protection Of Control Units)
  • 12 00 ... Instructions For Connecting And Disconnecting Test Units
  • 12 00 ... Instructions On Component Inspection
  • 12 00 ... Instructions On Starting Aid
  • 12 13 Notes On Checking Ignition System
• Ignition Wires, Spark Plugs
  • 12 12 011 Replacing All Spark Plugs (N73)
• Ignition Coil
  • 12 13 Notes On Checking Ignition System
  • 12 13 009 Checking Rod-Type Ignition Coils (M54, M56, N40, N42, N45, N46, N52, N62, N73)
  • 12 13 511 Replacing Ignition Coil (N73)
  • 12 13 512 Removing And Installing/Replacing All Rodtype Ignition Coils (N73)
• Electronic Switching Or Control Unit
  • 12 14 512 Replacing Pulse Generator On Left Exhaust Camshaft (N73)
  • 12 14 513 Replacing Pulse Generator On Right Exhaust Camshaft (N73)
  • 12 14 521 Replacing Crankshaft Pulse Generator (N73)
  • 12 14 522 Replacing Pulse Generator On Left Inlet Camshaft (N73)
  • 12 14 526 Replacing Pulse Generator On Right Inlet Camshaft (N73)
  • 12 14 550 Replacing Control Units (Digital Motor Electronics N73)
  • 12 14 610 Replacing Knock Sensors On Right Side (Cylinder Bank 1-6 N73)
  • 12 14 611 Replacing Knock Sensors On Left Side (Cylinder Bank 7-12 N73)
  • 12 14 705 Programming Control Unit (DME/DDE)
  • 12 52 005 Removing And Installing/Replacing Integrated Supply Module (N73)
  • 12 90 100 Replacing Fan For Electronics Box (N73)
  • 13 61 550 Removing And Installing/Replacing Control Unit For Direct Injection (N73)
• Alternator With Drive And Mount
  • 12 31... Replacing Alternator Belt Pulley
  • 12 31 009 Checking Alternator (BSD)
    • Notes
    • Oscillogram For A Fault-Free Alternator:
    • Oscillogram For A Faulty Alternator:
  • 12 31 020 Removing And Installing/Replacing Alternator (Liquid-Cooled N73)
• Starter With Mounting
  • 12 41 020 Removing And Installing/Replacing Starter Motor (N73)
  • 12 41 041 Replacing Solenoid Switch
• Starter Lead
  • 12 42 500 Removing And Installing Or Replacing Battery Positive Lead (Between Alternator, Starter Motor And Battery Positive Support Point) (N73)
  • 12 42 540 Replacing Safety Battery Terminal (SBK)
• Engine Wiring Loom
  • 12 51 001 Replacing Wiring Harness Section For Engine (N73)
  • 12 51 100 Replacing Wiring Harness Section For Ignition Coil (N73)
  • 12 51 150 Removing And Installing/Replacing Wiring Harness Section For Fuel Injectors (N73)
• Connectors, Plugs
  • 12 52 005 Removing And Installing/Replacing Integrated Supply Module (N73)
• Oil Pressure/Oil Temperature Gauge
  • 12 61 280 Removing And Installing Or Replacing Oil Pressure Sensor (N73)
  • 12 61 285 Replacing Level Switch For Engine Oil (N73)
• Control Unit Box
  • 12 90 100 Replacing Fan For Electronics Box (N73)