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Safety precautions > < General notes on ignition system

A3 Mk1

Motronic injection and ignition system (4-cyl.)
Servicing ignition system
Removing and installing parts of the ignition system
 
R28-0001
  • Connector
    • ◆ Black, 4 pin
    • ◆ For ignition transformer (N152)
  • Ignition transformer (N152)*
    • ◆ Fitting location , engine compartment overview
    • ◆ Checking => Page 28-12
    • ◆ With marking for ignition cables:
      A = Cylinder 1
      B = Cylinder 3
      C = Cylinder 2
      D = Cylinder 4
  • 10 Nm
 
R28-0001
  • Connector
    • ◆ Black, 2-pin
    • ◆ For knock sensor 1 (G61)
    • ◆ Sensor and connector contacts are gold-plated
  • Knock sensor 1 (G61)*
    • ◆ Fitting location => Page 24-1, engine compartment overview
    • ◆ Checking => Page 28-19
    • ◆ Sensor and connector contacts are gold-plated
  • 20 Nm
    • ◆ Tightening torque influences the function of the knock sensor
  • Connector
    • ◆ Black, 3-pin
    • ◆ Hall sender (G40)
    • ◆ Connector contacts are gold-plated
 
R28-0001
  • Hall sender (G40)*
    • ◆ Fitting location => Page 24-1, engine compartment overview
    • ◆ Checking => Page 28-9
  • O-ring
    • ◆ Renew if damaged
  • Spark plug, 30 Nm
    • ◆ Remove and install with spark plug spanner 3122B
    • ◆ Type and electrode gap
      => Page 28-8, test data, spark plugs
  • Bracket
    • ◆ For ignition transformer (N152)
  • H.T. cable
    • ◆ With suppression connector and spark plug connector
    • ◆ Resistance 4.8...7.2 kω

Safety precautions > < General notes on ignition system