3.0L TDI CATA Overview
Engine Management System
3.0L TDI CATA Overview
3.0L TDI CATA Right Side of the Engine Compartment (Component
A is not shown in the overview)
A - Fuel Cooler Pump -V166- => [ Fuel Cooler Pump ] See Image Below.
1 - E-Box in Plenum Chamber
• Engine control module -J623- with height sensor
2 - Mass Air Flow (MAF) Sensor -G70- => [ Air Filter Assembly Overview ] See Image Below.
3 - Camshaft Position (CMP) Sensor -G40- => [ Camshaft Position (CMP) Sensor ] See Image Below.
4 - Fuel Temperature Sensor -G81- => [ Cylinder Bank 1 ] See Image Below.
5 - Engine Coolant Temperature (ECT) Sensor -G62- => [ Engine Coolant Temperature (ECT) Sensor ] See Image Below.
6 - Bracket to Plenum Chamber Bulkhead => [ Plenum Chamber Bulkhead ] See Image Below.
• Differential Pressure Sensor -G505-
• Bank 1 exhaust gas temperature sensor 2 -G448- connector (engine code CATA)
• Heated oxygen sensor (HO2S) -G39- connector with oxygen sensor (O2S) heater -Z19-
• Exhaust gas temperature sensor 4 -G648- connector
For the 3.0L TDI CATA Exhaust System location => [ 3.0L TDI CATA Exhaust System ] Locations
7 - Fuel Pressure Regulator Valve -N276- => [ Cylinder Bank 1 ] See Image Below.
8 - EGR Temperature Sensor -G98- connector => [ Exhaust Gas Recirculation Sensors and Connectors ] See Image Below.
9 - Exhaust Gas Temperature Sensor 1 -G235- Connector => [ Exhaust Gas Recirculation Sensors and Connectors ] See Image Below.
• For the 3.0L TDI CATA Exhaust System location => [ 3.0L TDI CATA Exhaust System ] Locations
10 - Turbocharger (TC) 1 Control Module -J724- => [ Turbocharger (TC) 1 Control Module ] See Image Below.
3.0L TDI CATA Right Side of the Engine Compartment continued
11 - Intake Flap Motor -V157- => [ Intake Manifold Assembly Overview ] See Image Below.
• Cylinder Bank 1
12 - Fuel High Pressure Pump => [ High Pressure Pump ] See Image Below.
13 - Fuel Metering Valve -N290- => [ High Pressure Pump ] See Image Below.
14 - Reduced Oil Pressure Switch -F378- => [ Reduced Oil Pressure Switch ] See Image Below.
15 - Exhaust Gas Recirculation (EGR) Cooler Pump -V400- => [ Exhaust Gas Recirculation (EGR) Cooler Pump ] See Image Below.
16 - Pressure Retention Valve in the Fuel Return Line => [ Cylinder Bank 1 ] See Image Below.
17 - Injection Units (Piezo Injectors) => [ Injectors and High Pressure Line Assembly Overview ] See Image Below.
• Cylinder Bank 1
18 - Engine Coolant Temperature (ECT) Sensor (on Radiator) -G83- => [ Cooling Fans and Cooling Pump ] Locations
3.0L TDI CATA Left Side of Engine Compartment (Components
A - E are not shown in the overview)
A - Brake Light Switch -F- and Brake Pedal Switch -F47-
• Located in the footwell at the brake pedal
B - Throttle Position (TP) Sensor -G79- and Accelerator Pedal Position Sensor 2 -G185- => [ Accelerator Pedal Module Assembly Overview ] Locations
• Located in the footwell at the accelerator pedal
C - Engine Speed (RPM) Sensor -G28- => [ Engine Speed (RPM) Sensor ] See Image Below.
• Located in the transmission housing above the starter ring gear
D - Glow Plug 1 -Q10- , Glow Plug 2 -Q11- , Glow Plug 3 -Q12- , Glow Plug 4 -Q13- , Glow Plug 5 -Q14- and Glow Plug 6 -Q15-
• Glow Plug 2 -Q11- with Cylinder 2 Combustion Chamber Pressure Sensor -G678-
• Glow Plug 5 -Q14- with Cylinder 5 Combustion Chamber Pressure Sensor -G681-
E - Oil Level Thermal Sensor -G266- => [ Lower Oil Pan Section Assembly Overview ] See Image Below.
• Located at the bottom of the lower oil pan
1 - Fuel High Pressure Pump => [ High Pressure Pump ] See Image Below.
• With Fuel Metering Valve -N290-
2 - Exhaust Gas Recirculation (EGR) Motor -V338- => [ Exhaust Gas Recirculation Sensors and Connectors ] See Image Below.
3 - Exhaust Gas Recirculation (EGR) Cooler Switch-Over Valve -N345- => [ Exhaust Gas Recirculation Sensors and Connectors ] See Image Below.
• Exhaust Gas Recirculation (EGR) Cooler Switch-Over Valve 2 -N381- => [ Exhaust Gas Recirculation (EGR) Cooler Switch-Over Valve 2 ] See Image Below.
4 - EGR Temperature Sensor -G98- => [ Exhaust Gas Recirculation Sensors and Connectors ] See Image Below.
5 - Intake Flap Motor 2 -V275- => [ Intake Manifold Assembly Overview ] See Image Below.
3.0L TDI CATA Left Side of Engine Compartment continued
6 - Installation Location Inside the Exhaust System => [ Inside the Exhaust System Tract ] See Image Below.
• Heated Oxygen Sensor (HO2S) -G39- with Oxygen Sensor (O2S) Heater -Z19-
• NOX Sensor -G295-
• Exhaust Gas Temperature (EGT) Sensor 2 -G448- (engine code CATA)
• Catalyst Temperature Sensor 1 -G20- (engine
code CATA)
• Exhaust Gas Temperature (EGT) Sensor 3 -G495-
For the 3.0L TDI CATA Exhaust System location => [ 3.0L TDI CATA Exhaust System ] Locations
7 - Catalyst Temperature Sensor 1 -G20- => [ Inside the Exhaust System Tract ] See Image Below.
• Installed only on vehicles with engine code CATA
For the 3.0L TDI CATA Exhaust System location => [ 3.0L TDI CATA Exhaust System ] Locations
8 - Exhaust Gas Temperature (EGT) Sensor 3 -G495- => [ Inside the Exhaust System Tract ] See Image Below.
For the 3.0L TDI CATA Exhaust System location => [ 3.0L TDI CATA Exhaust System ] Locations
9 - Auxiliary Fuel Pump -V393- => [ Fuel Filter ] See Image Below.
10 - Fuel Cooler
11 - Fuel Filter
12 - NOX Sensor -G295- => [ Inside the Exhaust System Tract ] See Image Below.
• Integrated with NOX Sensor Control Module -J583-
• For the 3.0L TDI CATA Exhaust System location => [ 3.0L TDI CATA Exhaust System ] Locations
13 - Throttle Valve Control Module -J338- => [ Intake Manifold Assembly Overview ] See Image Below.
14 - Injection Units (Piezo Injectors) => [ Injectors and High Pressure Line Assembly Overview ] See Image Below.
• Cylinder Bank 2
15 - Charge Air Pressure Sensor -G31- with Intake Air Temperature (IAT) Sensor -G42- => [ Charge Air Pressure Sensor ] See Image Below.
16 - Fuel Pressure Sensor -G247- => [ Fuel Pressure Sensor ] See Image Below.
17 - Oil Pressure Control => [ Oil Pressure Control ] See Image Below.
• Oil Pressure Switch -F22-
• Oil Pressure Regulation Valve -N428-
Air Duct Pipes and Air Duct
Hoses Assembly Overview
26 - Charge Air Pressure Sensor -G31-
31 - Charge Air Cooler Bypass Control Unit -J865- => [ Charge Air Cooler Bypass Control Unit ] See Image Below.
Charge Air Cooler Bypass Control
Unit
1 - Charge Air Cooler Bypass Control Unit -J865-
Exhaust Gas Recirculation
(EGR) Cooler Switch-Over Valve 2
3 - Exhaust Gas Recirculation (EGR) Cooler Switch-Over Valve 2 -N381-
Air Filter Assembly Overview
4 - Air Filter Lower Section
7 - Mass Air Flow (MAF) Sensor -G70-
10 - Air Filter Upper Section
Camshaft Position (CMP) Sensor
1 - Camshaft Position (CMP) Sensor -G40-
2 - Fuel Pressure Regulator Valve -N276-
Cylinder Bank 1
1 - Fuel Pressure Regulator Valve -N276-
2 - Fuel Temperature Sensor -G81-
3 - Pressure retention valve in the fuel return line
Engine Coolant Temperature
(ECT) Sensor
Arrow - Engine Coolant Temperature (ECT) Sensor -G62-
Plenum Chamber Bulkhead
1 - Bank 1 exhaust gas temperature sensor 2 -G448- connector (engine code CATA)
2 - Heated oxygen sensor (HO2S) -G39- connector with oxygen sensor (O2S) heater -Z19-
3 - Differential Pressure Sensor -G505-
4 - Exhaust gas temperature sensor 4 -G648- connector
For the 3.0L TDI CATA Exhaust System location => [ 3.0L TDI CATA Exhaust System ] Locations
Exhaust Gas Recirculation
Sensors and Connectors
1 - EGR temperature sensor -G98- connector
2 - Exhaust gas temperature sensor 1 -G235- connector
3 - Not installed in this location
4 - Exhaust Gas Recirculation (EGR) Cooler Switch-Over Valve -N345-
5 - EGR Temperature Sensor -G98-
6 - Exhaust Gas Recirculation (EGR) Motor -V338-
For the 3.0L TDI CATA Exhaust System location => [ 3.0L TDI CATA Exhaust System ] Locations
Fuel Cooler Pump
Arrow - Fuel Cooler Pump -V166-
Turbocharger (TC) 1 Control
Module
- - Turbocharger (TC) 1 Control Module -J724-
Intake Manifold Assembly
Overview
2 - Throttle Valve Control Module -J338-
8 - Intake Manifold Upper Section
16 - Intake Flap Motor
• Intake Flap Motor -V157- (right)
• Intake Flap Motor 2 -V275- (left)
Lower Oil Pan Section Assembly
Overview
1 - Lower oil pan section with Oil Level Thermal Sensor -G266-
High Pressure Pump
1 - Fuel supply line to the high pressure pump
2 - Fuel return line to the fuel tank
3 - High pressure fuel line to fuel rail (cylinder bank 1)
4 - High Pressure Pump
5 - Fuel Metering Valve -N290-
Reduced Oil Pressure Switch
1 - Reduced Oil Pressure Switch -F378-
Exhaust Gas Recirculation
(EGR) Cooler Pump
1 - Exhaust Gas Recirculation (EGR) Cooler Pump -V400-
Injectors and High Pressure
Line Assembly Overview
3 - Injector
6 - Fuel Rail
10 - High-Pressure Line, from the high pressure pump
Inside the Exhaust System
Tract
1 - Exhaust Gas Temperature (EGT) Sensor 3 -G495-
2 - Catalyst Temperature Sensor 1 -G20- (engine code CATA)
3 - Exhaust Gas Temperature (EGT) Sensor 2 -G448- (engine code CATA)
4 - NOX Sensor -G295-
5 - Heated Oxygen Sensor (HO2S) -G39- with Oxygen Sensor (O2S) Heater -Z19-
For the 3.0L TDI CATA Exhaust System location => [ 3.0L TDI CATA Exhaust System ] Locations
Fuel Filter
1 - Auxiliary Fuel Pump -V393-
2 - Auxiliary fuel pump -V393- connector
3 - Fuel supply line via the auxiliary fuel pump -V393- to the fuel high pressure pump
Charge Air Pressure Sensor
2 - Charge Air Pressure Sensor -G31- with Intake Air Temperature (IAT) Sensor -G42-
Fuel Pressure Sensor
1 - Fuel Pressure Sensor -G247-
Oil Pressure Control
1 - Oil Pressure Switch -F22-
2 - Oil Pressure Regulation Valve -N428-
Engine Speed (RPM) Sensor
Arrow - Engine Speed (RPM) Sensor -G28-
