Engine Electrical System -- Repair (F91, F92 & F93)

• 12 00 General Information
  • Instructions for removal and replacement of control units
  • Notes on starting assistance
• 12 12 Spark Plugs
  • 12 12 011 Removing and installing/replacing all spark plugs
    • Replace the spark plugs of cylinder bank 1
    • Replace spark plugs of cylinder bank 2
• 12 13 Ignition Coils
  • 12 13 506 Replacing an ignition coil (following vehicle diagnosis) (right)
    • Removing ignition coil of cylinder bank 1
    • Install ignition coils of cylinder bank 1
  • 12 13 507 Replacing an ignition coil (after vehicle diagnosis) (left)
    • Removing ignition coil of cylinder bank 2
    • Install the ignition coils of cylinder bank 2
  • 12 13 512 Replacing more than one ignition coil (after vehicle diagnosis)
    • Removing ignition coil of cylinder bank 2
    • Removing ignition coil of cylinder bank 1
    • Install the ignition coils of cylinder bank 2
    • Install ignition coils of cylinder bank 1
• 12 14 Crankshaft Sensor, Camshaft Sensors, Knock Sensors, Engine Control Module
  • 12 14 512 Replace left exhaust camshaft sensor (after vehicle diagnosis)
    • Removing the exhaust camshaft sensor of the cylinder banks 5 to 8
    • Installing the exhaust camshaft sensor of the cylinder banks 5 to 8
  • 12 14 513 Replace right exhaust camshaft sensor (after vehicle diagnosis)
    • Removing exhaust camshaft sensor of cylinder bank 1
    • Installing exhaust camshaft sensor of cylinder bank 1
  • 12 14 521 Replacing the crankshaft sensor (after vehicle diagnosis)
    • Removing the crankshaft sensor
    • Installing the crankshaft sensor
  • 12 14 522 Replace left intake camshaft sensor (after vehicle diagnosis)
    • Removing the intake camshaft sensor of cylinder banks 5 to 8
    • Installing the intake camshaft sensor of cylinder banks 5 to 8
  • 12 14 526 Replace right intake camshaft sensor (after vehicle diagnosis)
    • Removing intake camshaft sensor of cylinder bank 1
    • Installing intake camshaft sensor of cylinder bank 1
  • 12 14 551 Removing and installing Digital Motor Electronics control unit (cylinders 1-4)
    • Remove the DME control unit of cylinders 1 to 4
    • Install the DME control unit of cylinders 1 to 4
  • 12 14 553 Removing and installing Digital Motor Electronics control unit (cylinders 5-8)
    • Remove the DME control unit of cylinders 5 to 8
    • Install the DME control unit of cylinders 5 to 8
  • 12 14 555 Replacing the Digital Motor Electronics control unit (cylinders 1-4) (after vehicle diagnosis)
    • Remove the DME control unit of cylinders 1 to 4
    • Reading adjustment values during replacement of engine control units
    • Install the DME control unit of cylinders 1 to 4
  • 12 14 556 Replacing the Digital Motor Electronics control unit (cylinders 5-8) (after vehicle diagnosis)
    • Remove the DME control unit of cylinders 5 to 8
    • Reading adjustment values during replacement of engine control units
    • Install the DME control unit of cylinders 5 to 8
  • 12 14 557 Replacing both Digital Motor Electronics control units (after vehicle diagnosis)
    • Remove the DME control unit of cylinders 5 to 8
    • Remove the DME control unit of cylinders 1 to 4
    • Reading adjustment values during replacement of engine control units
    • Install the DME control unit of cylinders 5 to 8
    • Install the DME control unit of cylinders 1 to 4
  • 12 14 610 Replacing knock sensor(s) right (after vehicle diagnosis)
    • Remove the knock sensors on the right
    • Install the knock sensors on the right
  • 12 14 611 Replace the left knock sensor(s)
    • Remove the left knock sensors
    • Installing the left knock sensors
  • 12 14 700 Coding the control unit (DME)
  • 12 14 705 Programming the control unit (DME)
• 12 31 Alternator
  • 12 31 020 Removing and installing/replacing alternator
    • Removing the alternator
    • Install alternator
• 12 32 Voltage Regulator For Alternator
  • 12 32 501 Replacing the voltage regulator for the alternator (after vehicle diagnosis)
    • Replacing the alternator speed governor
• 12 41 Starter Motor
  • 12 41 020 Removing and installing/replacing starter motor
    • Removing starter motor
    • Installing starter motor
  • 12 41 041 Replacing the engagement solenoid switch
• 12 42 Starter And Alternator Positive Battery Cables
  • 12 42 540 Replacing the safety battery terminal (SBK)
  • 12 42 651 Removing and installing/replacing the positive battery cable remote positive terminal to alternator
    • Remove the positive battery cable from the remote positive terminal to the alternator
    • Install the positive battery cable from the remote positive terminal to the alternator
  • 12 42 652 Removing and installing/replacing the positive battery cable remote positive terminal to starter motor
    • Remove the positive battery cable from the remote positive terminal to the starter motor
    • Installing the positive battery cable from the remote positive terminal to the starter
• 12 51 Engine Wiring Harness
  • 12 51 245 Remove and install/replace transmission module engine wiring
    • Remove the transmission wiring harness
    • Installing transmission wiring harness
  • 12 51 300 Remove and install/replace engine wiring harness section, ignition module cylinder 1-4
    • Removing wiring harness section for the ignition system of cylinder bank 1
    • Installing wiring harness section for ignition system of bank 1
  • 12 51 301 Remove and install/replace engine wiring harness section, ignition module cylinder 5-8
    • Remove wiring harness section for the ignition system of cylinder bank 2
    • Installing wiring harness section for ignition system of bank 2
  • 12 51 302 Remove and install/replace wiring harness section, sensor system module cylinder 1-4
    • Removing the wiring harness for the sensor system of cylinder bank 1
    • Installing wiring harness for sensor system of cylinder bank 1
  • 12 51 303 Remove and install/replace wiring harness section, sensor system module cylinder 5-8
    • Removing the vehicle wiring harness for the sensor system of cylinder bank 2
    • Installing wiring harness for sensor system of cylinder bank 2
  • 12 51 321 Removing and installing/replacing the adapter between the wiring harness section and the oil level sensor
    • Removing adapter cable for oil-level sensor
    • Install adapter cable of the oil-level sensor
  • 12 51 322 Removing and installing/replacing the engine DME/PDM wiring harness section
    • Removing the wiring harness section of DME for the integrated power supply module
    • Installing the wiring harness section of DME for the integrated power supply module
  • 12 51 323 Removing and installing/replacing the adapter between the wiring harness section and the oil temperature sensor
    • Install wiring harness section adapter for oil temperature sensor
    • Remove wiring harness section adapter for oil temperature sensor
• 12 52 ECM Bracket
  • 12 52 032 Removing and install right control unit bracket
    • Removing the control unit bracket for cylinders 1 to 4
    • Installing control unit holder for cylinders 1 to 4
  • 12 52 033 Removing and installing/replacing the left control unit bracket
    • Replace holder of the DME control unit for cylinders 5 to 8
    • Installing the holder of the DME control unit for cylinders 5 to 8
• 12 61 Oil Pressure Switch, Oil Level Sensor
  • 12 61 280 Removing and installing/replacing oil pressure switch
    • Removing the oil pressure switch
    • Installing the oil pressure switch
  • 12 61 285 Replacing the oil level sensor for engine oil
    • Removing the oil-level sensor
    • Prepare the oil-level sensor
    • Installing the oil-level sensor
• 12 63 Power Distribution Box
  • 12 63 586 Replacing power distribution box (after vehicle diagnosis)
    • Removing the integrated power supply module
    • Installing the integrated power supply module