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Home >> Audi >> 2012 >> A8 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> Ignition System >> 4.2L - Ignition/Glow Plug System - Engine Code: CDRA (2 Of 2) >> 28 Ignition/Glow Plug System >> Description And Operation >> Ignition Assembly Overview

Ignition Assembly Overview

Fig 1: IGNITION OVERVIEW
GWWA28-10021Courtesy of AUDI OF AMERICA, LLC
  1. Ignition Coil Connector
    • 4-pin
  2. Bolt
    • 10 Nm
  3. 3-Pin Connector
  4. Camshaft Position Sensor
    • Camshaft position sensor -G40- cylinder bank 1
    • Camshaft position sensor 3 -G300- cylinder bank 1
    • Camshaft position sensor 2 -G163- cylinder bank 2
    • Camshaft position sensor 4 -G301- cylinder bank 2
    • Removing and installing, refer to CAMSHAFT POSITION SENSOR 
  5. O-ring
    • Replace if damaged
    • Coat with clean engine oil
  6. Bolt
    • 20 Nm
    • Tightening specifications affect function of Knock Sensor
  7. Knock Sensors
    • Contact surfaces between knock sensor and cylinder block must be free of corrosion, dirt and grease
    • Knock sensor 1 -G61- cylinder bank 1
    • Knock sensor 2 -G66- cylinder bank 1
    • Knock sensor 3 -G198- cylinder bank 2
    • Knock sensor 4 -G199- cylinder bank 2
    • Removing and installing, refer to IGNITION COILS 
  8. Spark Plug
  9. Ignition coil

    • Ignition coil 1 with power output stage -N70-
    • Ignition coil 2 with power output stage -N127-
    • Ignition coil 3 with power output stage -N291-
    • Ignition coil 4 with power output stage -N292-
    • Ignition coil 5 with power output stage -N323-
    • Ignition coil 6 with power output stage -N324-
    • Ignition coil 7 with power output stage -N325-
    • Ignition coil 8 with power output stage -N326-
    • Removing and installing, refer to IGNITION COILS 
    • To remove, use the ignition coil puller T40039