Engine Electrical System - Repair

• Troubleshooting
  • 12 00... Instructions for disconnecting and connecting battery
  • 12 00... Instructions for working on the ignition system
  • 12 00... Notes/information on removing and installing control units
  • 12 00... Notes/information on start assistance (jump starting)
• Ignition Wires, Spark Plugs
  • 12 12 011 Replacing all spark plugs (N42, N40, N46, N45, N52, N52K, N51)
• Ignition Coil
  • 12 13 009 Check ignition pencil coils with diagnosis and information system tester or oscilloscope (M54, M56, N40, N42, N43, N45, N46, N52, N62, N62TU, N73)
  • 12 13 511 Replacing ignition coils (N52, N52K, N51)
• Electronic Switching Or Control Unit
  • 12 14 521 Replacing crankshaft pulse generator (N52, N52K, N51, N53)
  • 12 14 523 Replacing inlet camshaft pulse generator (N52, N52K, N51, N53)
  • 12 14 524 Replacing exhaust camshaft pulse generator (N52, N52K, N51, N53)
  • 12 14 550 Replacing control unit (DME)
  • 12 14 600 Removing/replacing knock sensors (N52, N52K, N51)
  • 12 14 700 Coding control module (DME / DDE)
  • 12 14 705 Programming control unit (DME / DDE)
• Alternator With Drive And Mounting
  • 12 31... Replacing alternator belt pulley
  • 12 31... Replacing alternator belt pulley (with overrunning clutch)
  • 12 31 009 Checking alternator (BSD)
  • 12 31 020 Removing and installing or replacing alternator (N52, N52K, N51, N53)
• Regulator
  • 12 32 501 Replacing voltage regulator
• Starter With Mounting
  • 12 41 020 Removing and installing/replacing starter (N52, N52K, N51, N53, N54)
  • 12 41 041 Replacing solenoid switch
• Starter Lead
  • 12 42 500 Replacing battery positive lead (between starter, alternator and battery positive terminal)
• Engine Wiring Loom
  • 12 51 001 Replacing wiring harness section for engine (N52)
  • 12 51 100 Replacing wiring harness section for ignition coil (N52)
• Oil Pressure/Oil Temperature Gauge
  • 12 61 280 Removing and installing/replacing oil pressure sensor (N52, N52K, N51, N54, N53)
  • 12 61 285 Replacing engine oil level sensor (N52, N52K, N51, N46, N54, N53)
• Control Unit Box
  • 12 90... Removing and installing/replacing electronics box
  • 12 90 100 Replacing fan for electronics box (N52)