Engine System Overview 2.4 Engine System Diagrams 2.4.1 C7 ACERT/C9 ACERT Factory Installed Wiring and Components 12 pin C7 8 HEUI B Injectors Six 2 pins 18 pin C9 8 A4 ECU J2 J1 HEP 10 Dual Cam Speed/Timing Intake Manifold (Boost) Pressure Intake Manifold Air Temperature Timing Calibration Harness Coolant Temperature Injection Actuation Pressure Fuel Pressure Atmospheric Pressure Connector Oil Pressure Intake Air Heater Relay 24V Electrical Schematic, RENR7933, C7 ACERT Industrial Engines Electrical Schematic, RENR7948, C9 ACERT Industrial Engines I N D U S T R I A L E N G I N E E L E C T R O N I C S 12