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Home >> Audi >> 2012 >> A8L Quattro Sedan (4H8) V8-4.2L (CDRA) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Locations >> 4.2L CDRA Overview

4.2L CDRA Overview







Component Locations: Engine Management System

4.2L CDRA Overview


Right side view





1 Intake Air Switch-Over valve -N335-
• In the air filter box
2 Camshaft Adjustment Valve 1 (exhaust) -N318- => [ Cylinder Bank 1 (Right Side) Overview ] See Image Below.
3 High-Pressure Pump
• Fuel Metering Valve -N290- => [ Inside of the Right Cylinder Head ] See Image Below.
4 Camshaft Adjustment Valve 1 -N205- => [ Inside of the Right Cylinder Head ] See Image Below.
5 Low Fuel Pressure Sensor -G410- => [ Inside of the Right Cylinder Head ] See Image Below.
6 Evaporative Emission (EVAP) Canister Purge Regulator Valve 1 -N80- => 6.3L CEJA Overview
7 Throttle valve control module -J338- => [ Throttle valve control modules ] 6.3L CEJA Overview
8 Engine Control Module (ECM) -J623- => [ Engine Control Module (ECM) ] See Image Below.
9 Electrical Connectors for Bank 1 and 2
• Heated Oxygen Sensor (HO2S) -G39-
• Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-
• Heated Oxygen Sensor (HO2S) 2 -G108-
• Oxygen sensor 2 after catalytic converter -G131-
10 Knock Sensor (KS) 2 -G66- => [ Inside of the Right Cylinder Head ] See Image Below.
11 Camshaft Position (CMP) Sensor -G40- => [ Inside of the Right Cylinder Head ] See Image Below.
12 Components on Engine Front
• Location => [ Components on the Front of the Engine ] See Image Below.
13 Knock Sensor (KS) 1 -G61- => [ Inside of the Right Cylinder Head ] See Image Below.
14 Fuel Pressure Sensor -G247- => [ Inside of the Right Cylinder Head ] See Image Below.
15 Fuel Metering Valve -N290- => [ Inside of the Right Cylinder Head ] See Image Below.
16 Combination Valve For Secondary Air
• Cylinder bank 2 (right)
17 Ignition Coils Cylinder Bank 1 => [ Cylinder Bank 1 (Right Side) Overview ] See Image Below.
• 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-
18 Camshaft Position (CMP) Sensor 3 -G300- => [ Cylinder Bank 1 (Right Side) Overview ] See Image Below.
19 Secondary Air Injection (AIR) Pump Motor -V101- => See Image Below.
Left side view





1 Engine Control Module (ECM) -J623- => [ Engine Control Module (ECM) ] See Image Below.
2 Electrical Connectors for Bank 1 and 2
• Heated Oxygen Sensor (HO2S) -G39-
• Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-
• Heated Oxygen Sensor (HO2S) 2 -G108-
• Oxygen sensor 2 after catalytic converter -G131-
3 Engine Coolant Temperature (ECT) Sensor -G62- => See Image Below.
4 Camshaft Adjustment Valve 2 -N208- => [ Inside of the Left Cylinder Head ] See Image Below.
5 High-Pressure Pump
• Fuel Metering Valve 2 -N402-
6 Fuel Metering Valve 2 -N402- => [ Inside of the Left Cylinder Head ] See Image Below.
7 Camshaft Adjustment Valve 2 (exhaust) -N319- => [ Cylinder Bank 2 (Left Side) Overview ] See Image Below.
8 Camshaft Position (CMP) Sensor 4 -G301- => [ Cylinder Bank 2 (Left Side) Overview ] See Image Below.
9 Ignition Coils Cylinder Bank 2 => [ Cylinder Bank 2 (Left Side) Overview ] See Image Below.
• 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-
10 Combination Valve For Secondary Air
• Cylinder bank 2 (left)
11 Electrical Connector for Knock Sensor (KS) 4 -G199-
12 Electrical Connector for Knock Sensor (KS) 3 -G198-
13 Components on Engine Front
• Location => [ Components on the Front of the Engine ] See Image Below.
14 Knock Sensor (KS) 3 -G198- => [ Inside of the Left Cylinder Head ] See Image Below.
15 Camshaft Position (CMP) Sensor 2 -G163- => [ Inside of the Left Cylinder Head ] See Image Below.
16 Knock Sensor (KS) 4 -G199- => [ Inside of the Left Cylinder Head ] See Image Below.
17 Low Fuel Pressure Sensor -G410- => [ Inside of the Right Cylinder Head ] See Image Below.
18 Throttle valve control module -J338- => [ Throttle valve control modules ] 6.3L CEJA Overview
19 Evaporative Emission (EVAP) Canister Purge Regulator Valve 1 -N80- => 6.3L CEJA Overview
20 Reduced Oil Pressure Switch -F378- => [ Reduced Oil Pressure Switch ] See Image Below.
Not called out in overviews:
A - Engine Speed (RPM) Sensor -G28- => [ Engine Speed (RPM) Sensor ] See Image Below.
B - Oil Pressure Regulation Valve -N428- => [ Oil Pressure Regulation Valve ] See Image Below.
C - Fuel Pump (FP) Control Module -J538- => [ Fuel Pump(s) and Sensors ] Locations
D - Map Controlled Engine Cooling Thermostat -F265- => [ Map Controlled Engine Cooling Thermostat ] See Image Below.
E - Transmission Coolant Valve -N488- => [ Transmission Coolant Valve ] See Image Below.
F - Cylinder Head Coolant Valve -N489- => [ Coolant Valve ] See Image Below.
G - Secondary Air Injection Sensor 1 -G609- => See Image Below.

Engine Control Module (ECM)






2 - Engine Control Module (ECM) -J623-

Engine Coolant Temperature (ECT) Sensor -G62-






1 - Engine Coolant Temperature (ECT) Sensor -G62-

Transmission Coolant Valve






1 - Transmission Coolant Valve -N488-

Coolant Valve






2 - Engine Coolant Temperature (ECT) Sensor -G62-
3 - Cylinder Head Coolant Valve -N489-

Cylinder Bank 1 (Right Side)
Overview






1 - Camshaft Position (CMP) Sensor 3 -G300-
2 - Camshaft Adjustment Valve 1 (exhaust) -N318-
3 - Ignition Coil 4 with Power Output Stage -N292-
4 - Ignition Coil 3 with Power Output Stage -N291-
5 - Ignition Coil 2 with Power Output Stage -N127-
6 - Ignition Coil 1 with Power Output Stage -N70-

Cylinder Bank 2 (Left Side)
Overview






1 - Ignition Coil 5 with Power Output Stage -N323-
2 - Ignition Coil 6 with Power Output Stage -N324-
3 - Ignition Coil 7 with Power Output Stage -N325-
4 - Ignition Coil 8 with Power Output Stage -N326-
5 - Camshaft Adjustment Valve 2 (exhaust) -N319-
6 - Camshaft Position (CMP) Sensor 4 -G301-

Inside of the Right Cylinder
Head






1 - Intake Manifold Runner Position Sensor -G336-
2 - Camshaft Position (CMP) Sensor -G40-
3 - Fuel Metering Valve -N290-
4 - Camshaft Adjustment Valve 1 -N205-
5 - Low Fuel Pressure Sensor -G410-
6 - Cylinder 4 Fuel Injector -N33-
7 - Cylinder 3 Fuel Injector -N32-
8 - Cylinder 2 Fuel Injector -N31-
9 - Cylinder 1 Fuel Injector -N30-
10 - Fuel Pressure Sensor -G247-
11 - Intake Manifold Runner Control (IMRC) Valve -N316-
12 - Knock Sensor 1 -G61-
13 - Knock Sensor 2 -G66-

Inside of the Left Cylinder
Head






1 - Camshaft Adjustment Valve 2 -N208-
2 - Fuel Metering Valve 2 -N402-
3 - Camshaft Position (CMP) Sensor 2 -G163-
4 - Intake Manifold Runner Position Sensor 2 -G512-
5 - Cylinder 5 Fuel Injector -N83-
6 - Cylinder 6 Fuel Injector -N84-
7 - Cylinder 7 Fuel Injector -N85-
8 - Cylinder 8 Fuel Injector -N86-
9 - Low Fuel Pressure Sensor -G410-
10 - Knock Sensor 4 -G199-
11 - Knock Sensor 3 -G198-

Components on the Front of
the Engine






1 - Intake Manifold Runner Position Sensor -G336-
2 - Fuel Pressure Sensor -G247-
3 - Manifold Absolute Pressure (MAP) Sensor -G71- with Intake Air Temperature (IAT) Sensor -G42-
4 - Intake Manifold Tuning (IMT) Valve -N156-
5 - Electrical connector for Cylinder 5 Fuel Injector -N83-
6 - Intake Manifold Runner Position Sensor 2 -G512-
7 - Electrical connector for Knock Sensor 3 -G198-
8 - Electrical connector for Knock Sensor 4 -G199-
9 - Engine Temperature Control Temperature Sensor -G694-
10 - Secondary Air Injection (AIR) Solenoid Valve 2 -N320-
11 - Secondary Air Injection (AIR) Solenoid Valve -N112-
12 - Intake Manifold Runner Control (IMRC) Valve -N316-
13 - Oil Pressure Switch -F22-
14 - Electrical connector for Knock Sensor 2 -G66-
15 - Electrical connector for Knock Sensor 1 -G61-

Reduced Oil Pressure Switch






1 - Reduced Oil Pressure Switch -F378-
2 - Connector

Engine Speed (RPM) Sensor






2 - Engine Speed (RPM) Sensor -G28-

Oil Pressure Regulation Valve






2 - Connector on Oil Pressure Regulation Valve -N428-

Map Controlled Engine Cooling
Thermostat






• On the front left side of engine

1 - Map Controlled Engine Cooling Thermostat -F265-
For 4.2L gasoline engine, CDRA

Secondary Air Injection Sensor 1 -G609-






For 6.3L gasoline engine, CEJA

Secondary air injection sensor 1 -G609- /Secondary air injection sensor 2 -G610-






For 4.2L gasoline engine, CDRA

Secondary air injection pump motor -V101-






For 6.3L gasoline engine, CEJA

Secondary Air Injection (AIR)
Pump Motors






• 1 -Secondary air injection pump motor -V101-

• 3 - Secondary air injection pump motor 2 -V189-


Oil Level Thermal Sensor






1 - Oil Level Thermal Sensor -G266- in bottom of the oil pan.
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