Engine Electrical System - Repair - B46 & B48 Engines, Cooper S & JCW (F55, F56)

• Safety And General Information
  • (00 Safety information for working on vehicles with automatic engine start-stop function (MSA))
  • (Safety instructions for handling vehicle battery)
  • Handling components after flood damage
  • Instructions for removal and replacement of control units
  • (Battery replacement information)
  • (Notes for disconnecting and connecting the vehicle battery)
  • (Notes/information on start assistance (jump starting))
  • (61 00... Notes on handling wiring harnesses and cables)
  • 61 35... Notes on ESD protection (Electro Static Discharge)
  • (61 13... Butt connector for repairing a plug connection)
• Spark Plugs
  • 12 12 011 Remove and install or replace all spark plugs (B36, B38, B46, B48)
• Ignition Coils
  • 12 13 511 Replace ignition coils (B36, B38, B46, B48)
    • Notes
    • (13 71... Removing the acoustic cover)
• Engine Control Unit, Sensors
  • 12 14 521 Replacing crankshaft pulse sensor (B36, B38, B46, B48)
  • 12 14 523 Replacing pulse sensor on intake camshaft (B48, B46)
  • 12 14 524 Replace pulse sensor on exhaust camshaft (B48, B46)
  • 12 14 550 Replacing control unit (DME)
  • 12 14 602 Replacing the knock sensor (cylinder 1. and 2.) (B48, B46)
  • 12 14 604 Replacing knock sensor (cylinder 3. and 4.) (B48, B46)
  • 12 14 705 Programming the control unit (DME)
• Alternator
  • 12 31 020 Removing and installing or replacing alternator (B48, B46)
• Starter Motor
  • 12 41 020 Removing and installing/replacing starter motor
  • 12 41 041 Replacing the engagement solenoid switch
• Starter Cable
  • 12 42 500 Replacing the positive battery cable from the battery to the starter motor (B48, B46)
• Engine Wiring Harness
  • 12 51 210 Replacing the wiring harness section for the injectors and ignition coils (B48, B46)
  • 12 51 215 Replacing wiring harness section for Valvetronic servomotor (B48, B46)
  • 12 51 235 Replacing the engine sensor system module 1 wiring harness section (B48, B46)
  • 12 51 240 Replacing the engine sensor system module 2 wiring harness section (B48, B46)
  • 12 51 306 Removing and installing the wiring harness - section for the supply unit module (B48, B46)
• Oil Pressure Switch, Oil Level Sensor
  • 12 61 280 Removing and installing/replacing the oil pressure switch (B36, B38, B46, B48)
  • 12 61 285 Removing and installing/replacing oil level sensor for engine oil
• Power Distribution Box
  • 12 63 586 Replacing power distribution box