C7 Engines and C9 Engines
Left Side View
 | |
| Illustration 1 | g01386981 |
Typical left side view Crankcase pressure sensor (8) is located above Engine Control Module (ECM) (14) on C9 engines. (1) Fuel rail pressure sensor (2) Solenoid 1 for the high pressure fuel pump (3) Solenoid 2 for the high pressure fuel pump (4) High pressure fuel pump (5) Fuel rail (6) Coolant temperature sensor (7) Intake manifold air temperature sensor (8) Crankcase pressure sensor (if equipped) (9) Pressure relief valve for fuel rail (5) (10) Intake manifold pressure sensor (11) Coil for the ARD purge air actuator (12) Pilot fuel pressure sensor (13) Main fuel pressure sensor (14) ECM (15) Air inlet heater relay (16) Oil pressure sensor (17) Main fuel control valve (18) Pilot fuel control valve (19) Air compressor (20) Fuel enable valve (21) Secondary speed/timing sensor (bottom) (22) Primary speed/timing sensor (top) (23) Secondary fuel filter (24) Cleaning port for the Aftertreatment Regeneration Device (ARD) (25) Optional hand priming pump (26) Fuel transfer pump | |
Right Side View
 | |
| Illustration 2 | g01387031 |
Typical right side view (27) Venturi for the combustion air supply (28) Differential pressure sensor for the combustion air supply (29) Air pressure control valve (30) Differential pressure sensor for the CGI system (31) Absolute pressure sensor for the CGI system (32) CGI control group (33) Air inlet temperature sensor (34) Temperature sensor for the CGI system (35) Venturi for the CGI system (36) Oil filter (37) Ignition coil (38) CGI precooler (39) Spark plug (40) ARD combustion head (41) ARD body (42) Flame boundary temperature sensor (43) Flame detection temperature sensor (44) Variable Nozzle Turbocharger (VNT) (45) Turbocharger outlet temperature sensor | |
C9 Engines for Recreational Vehicles
Left Side View
 | |
| Illustration 3 | g03274596 |
Typical left side view Main fuel control valve (18) is behind air inlet heater relay (15) . The location of secondary fuel filter (23) depends on the chassis arrangement. (1) Fuel rail pressure sensor (2) Solenoid 1 for the high pressure fuel pump (3) Solenoid 2 for the high pressure fuel pump (4) High pressure fuel pump (5) Fuel rail (7) Intake manifold air temperature sensor (8) Crankcase pressure sensor (if equipped) (9) Pressure relief valve for fuel rail (5) (10) Intake manifold pressure sensor (11) Coil for the ARD purge air actuator (12) Pilot fuel pressure sensor (13) Main fuel pressure sensor (14) ECM (15) Air inlet heater relay (16) Oil pressure sensor (17) Main fuel control valve (18) Pilot fuel control valve (19) Fuel enable valve (20) Air compressor (21) Secondary speed/timing sensor (bottom) (22) Primary speed/timing sensor (top) (23) Secondary fuel filter (24) Cleaning port for the ARD (25) Optional hand priming pump (26) Fuel transfer pump (46) Outlet of the fuel filter base (47) Inlet of the fuel filter base | |
Right Side View
 | |
| Illustration 4 | g01443453 |
Typical right side view Flame boundary temperature sensor (42) is not shown. (6) Coolant temperature sensor (32) CGI control group (33) Air inlet temperature sensor (34) Temperature sensor for the CGI system (35) Venturi for the CGI system (36) Oil filter (37) Ignition coil (38) CGI precooler (39) Spark plug (40) ARD combustion head (41) ARD body (43) Flame detection temperature sensor (44) VNT (45) Turbocharger outlet temperature sensor | |
Top View
 | |
| Illustration 5 | g01443536 |
Typical top view (1) Fuel rail pressure sensor (2) Solenoid 1 for the high pressure fuel pump (3) Solenoid 2 for the high pressure fuel pump (6) Coolant temperature sensor (7) Intake manifold air temperature sensor (9) Pressure relief valve for fuel rail (5) (10) Intake manifold pressure sensor (11) Coil for the ARD purge air actuator (12) Pilot fuel pressure sensor (13) Main fuel pressure sensor (24) Cleaning port for the Aftertreatment Regeneration Device (ARD) (25) Optional hand priming pump (27) Venturi for the combustion air supply (28) Differential pressure sensor for the combustion air supply (30) Differential pressure sensor for the CGI system (31) Absolute pressure sensor for the CGI system (32) CGI control group (33) Air inlet temperature sensor (39) Spark plug (40) ARD combustion head (43) Flame detection temperature sensor (44) Variable Nozzle Turbocharger (VNT) | |
Rear View
 | |
| Illustration 6 | g01443568 |
Typical rear view (27) Venturi for the combustion air supply (28) Differential pressure sensor for the combustion air supply (29) Air pressure control valve | |
Diesel Particulate Filter (DPF)
 | |
| Illustration 7 | g01387075 |
Typical DPF Sensors (49) and (52) are nonserviceable separately. Sensor group (51) is serviced. (48) Inlet to the DPF (49) Inlet temperature sensor for the DPF (50) Electrical connector (51) Sensor group (52) Outlet temperature sensor for the DPF (53) Outlet for CGI (54) Outlet from the DPF (55) Tubes for the measurement of the differential pressure across the DPF | |