Engine Electrical System - Repair

• Troubleshooting
  • 61 20... Battery replacement information
  • 12 00 Contents of Engine Electrical System General
  • 11 00... Handling components after flood damage
  • 12 00... Instructions for removal and replacement of control units
  • 12 00... Instructions for working on the ignition system
  • 12 00... Instructions for connecting and disconnecting test units
  • 12 00... Instructions for welding work (overload protection of control units)
  • 12 00... Instructions on component testing
  • 12 00... Notes for disconnecting and connecting battery
  • 61 00... Notes on handling wiring harnesses and cables
  • 12 00... Notes/information on start assistance (jump starting)
  • 00 Safety information for working on vehicles with automatic engine start-stop function (MSA)
• Ignition Wires, Spark Plugs
  • 12 12 011 Removing and installing/replacing all spark plugs (N54T, N55)
• Ignition Coil
  • 12..... Removing and installing/replacing ignition coil cover (N55)
  • 12..... Removing and installing/replacing rear ignition coil cover (N55)
  • 12 13 Carrying out engine cleaning
  • 12 13 511 Replace ignition coils (N54T)
  • 12 13 511 Replacing ignition coils (N55)
• Electronic Switching Or Control Units
  • 12 14 700 Coding control module (DME/DDE)
  • 12 14 705 Programming control unit (DME/DDE)
  • 12 90... Removing and installing/replacing electronics box
  • 12 14 600 Removing/replacing knock sensors (N54T)
  • 12 14 600 Removing/replacing knock sensors (N55)
  • 12 14 524 Replace pulse sensor on exhaust camshaft (N54T, N55)
  • 12 14 651 Replace the pressure sensor on the charge air duct (N54T, N55)
  • 12 63 520 Replacing DME master relay (N54T)
  • 12 14 550 Replacing control unit (DME) (N54T)
  • 12 14 550 Replacing control unit (DME) (N55)
  • 12 14 521 Replacing crankshaft pulse sensor (N54T)
  • 12 14 521 Replacing crankshaft pulse sensor (N55)
  • 12 14 650 Replacing differential-pressure sensor on intake plenum (N55)
  • 12 90 100 Replacing fan for electronics box
  • 12 14 523 Replacing pulse sensor on intake camshaft (N54T, N55)
  • 12 14 650 Replacing suction pressure sensor on intake plenum (N54T)
• Alternator With Drive And Mounting
  • 12 31 009 Checking alternator (BSD)
  • 12 31 020 Removing and installing or replacing alternator (N54T, N55)
  • 12 31... Replacing alternator belt pulley (N54T
• Controller
  • 12 32 501 Replacing voltage regulator
• Starter With Mounting
  • 11 00... Handling components after flood damage
  • 12 41 020 Removing and installing/replacing starter motor (N54T, N55)
  • 12 41 041 Replacing solenoid switch
• Starter Lead
  • 12 42 500 Replacing positive battery cable between starter motor, alternator and positive battery connection point (N54T, N55)
  • 12 42 540 Replacing safety battery terminal (SBK)
• Engine Wiring Loom
  • 12 51 001 Replacing wiring harness section for engine (N54T)
  • 12 51 001 Replacing wiring harness section for engine (N55)
  • 12 51 100 Replacing wiring harness section for ignition and injectors (N55)
  • 12 51 100 Replacing wiring harness section for ignition coil (N54T)
• Oil Pressure/Oil Temperature/Oil Gauge
  • 12 61 285 Remove and install or replace the oil level sensor for engine oil (N54T)
  • 12 61 285 Removing and installing/renewing oil level sensor for engine oil (N55)
  • 12 61 280 Removing and installing/replacing oil pressure sensor (N54T)
  • 12 61 280 Removing and installing/replacing oil pressure sensor (N55)
• Switches And Relays
  • 12 63 520 Replacing DME master relay (N54T)
• Control Unit Box
  • 12 90... Removing and installing/replacing electronics box
  • 12 90 100 Replacing fan for electronics box