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Home >> Volkswagen >> 2012 >> Beetle Base, 2.5L Eng VIN X, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Ignition System >> 2.5L - Ignition/Glow Plug System - Engine Code(S): CBTA & CBUA (Hatchback) >> 28 Ignition/Glow Plug System >> Description And Operation >> Ignition System Overview
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Ignition System Overview

Fig 1: Identifying Ignition, Assembly Overview
GWWM28-0143Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
  1. Harness Connector for Knock Sensor (KS) 2 -G66-
    • Gray
    • Contacts gold plated
    • Installed position, refer to Fig 2
  2. Harness Connector for Knock Sensor (KS) 1 -G61-
    • Green
    • Contacts gold plated
    • Installed position, refer to Fig 2
  3. Knock Sensor 2 -G66-
    • Pay attention to the installed position: the cable connect faces outward 45° to the right
  4. Knock Sensor 1 -G61-
    • Pay attention to the installed position: the cable connection faces downward
  5. Bolt
    • 20 Nm
    • Tightening specifications affect function of Knock Sensor (KS)
  6. Ignition Coil with Power Output Stage -N70, N127, N291, N292, N323-
  7. Spark Plug
  8. Bolt
    • 10 Nm
  9. Camshaft Position Sensor -G40-
    • Contacts gold plated
  10. O-ring
    • No replacement part
Fig 2: Identifying Installation Position Of Harness Connectors For Knock Sensors
GWWM28-0209Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
  1. Green for Knock Sensor 1 -G61-
  2. Gray for Knock Sensor 2 -G66-