Computers and Control Systems: Locations
Component Locations, Overview
1. Evaporative Emission (EVAP) canister purge regulator valve -N80-
2. Mass Air Flow (MAF) sensor -G70-
- With intake air temperature (IAT) sensor -G42-
3. Camshaft Position (CMP) sensor 3 -G300-
- For exhaust camshaft
- Cylinder bank 1
4. Camshaft Position (CMP) sensor -G40-
- For intake camshaft
- Cylinder bank 1
5. Pressure sensor for brake booster pressure sensor -G294-
- For vehicles with automatic transmission
- Location, see Fig. 8
6. Camshaft Position (CMP) sensor -G163-
- For intake camshaft
- Cylinder bank 2
7. Camshaft Position (CMP) sensor 4 -G301-
- For exhaust camshaft
- Cylinder bank 2
8. Ignition coils with power output stage, bank 2
- Ignition Coil 4 with Power Output Stage -N292-
- Ignition Coil 5 with Power Output Stage -N323-
- Ignition Coil 6 with Power Output Stage -N324-
9. Electronics box (plenum chamber)
- Locations, see Fig. 4. and, see Fig. 5.
- Location for Motronic Engine Control Module (ECM) -J220-
- Check power supply to engine control module.
- Procedure following interruption of voltage supply.
- Replace engine control module
- Location for Motronic Engine Control module (ECM) power supply relay -J271-
- Test for Motronic Engine Control Module (ECM) power supply relay -J271-.
- Location for Secondary Air Injection (AIR) pump relay -J299-.
- Check Secondary Air Injection (AIR) pump relay -J299-:
- Location for fuse S130 for secondary air pump
- Location for Brake booster relay -J569-
10. Brake system vacuum pump -V192-
- For vehicles with automatic transmission
11. Valve 2 for camshaft adjustment -N208-, Camshaft adjustment valve 2 (exhaust) -N319-
- Cylinder bank 2
- Checking
12. Fuel injectors, bank 2
- Cylinder 4 Fuel Injector -N33-
- Cylinder 5 Fuel Injector -N83-
- Cylinder 6 Fuel Injector -N84-
13. Fuel injectors, bank 1
- Cylinder 1 Fuel Injector -N30-
- Cylinder 2 Fuel Injector -N31-
- Cylinder 3 Fuel Injector -N32-
14. Valve 1 for camshaft adjustment -N205- Camshaft adjustment valve 1 (exhaust) -N318-
- Cylinder bank 1
15. Ignition coils with power output stage, bank 1
- Ignition Coil 1 with Power Output Stage -N70-
- Ignition Coil 2 with Power Output Stage -N127-
- Ignition Coil 3 with Power Output Stage -N291-
16. Secondary Air Injection (AIR) pump motor -V101-
- Checking
17. Heated Oxygen Sensor (HO2S) -G39- and Oxygen sensor (O2S) heater -Z19-
- Bank 1, sensor 1
- Constant Heated Oxygen Sensor (HO2S)
- Check oxygen sensors and oxygen sensor control before catalytic converter
- Check aging of oxygen sensors before catalytic converter
- Check heating of oxygen sensors before catalytic converter
18. Bracket for connectors
- For right side of vehicle
- Assignment, see Fig. 6.
19. Oxygen sensor (O2S) behind three way catalytic converter (TWC) -G130- and Oxygen Sensor (O2S) heater 1 -Z29-
- Bank 1, sensor 2
- Check oxygen sensors and oxygen sensor control behind catalytic converter
- Check heating of oxygen sensors behind catalytic converter
20. Engine Coolant Temperature (ECT) sensor -G62-
- For engine control module
- On coolant line behind cylinder head, bank 1
- With Engine Coolant Temperature (ECT) sensor -G2-
- If necessary, release cooling system pressure before removal
21. Throttle valve control module -J338-
- With Throttle drive (power accelerator actuation) -G186-, Angle sensor -1- for throttle drive (power accelerator actuation) -G187- and Angle sensor -2- for throttle drive (power accelerator actuation) -G188-
- Perform adaptation on replacing
22. Secondary Air Injection (AIR) solenoid valve -N112-
- Checking
23. Engine speed (RPM) sensor -G28-
- In gear case above ring gear
24. Bracket for connectors
- For left side of vehicle
- Assignment, see Fig. 7
25. Throttle Position (TP) sensor -G79- and Sender -2- for accelerator pedal position -G185-
- Location, see Fig. 1.
- Adapting kick down function
26. Fuel Pump (FP) relay -J17-
- Location, see Fig. 2.
27. Brake light switch -F- and Brake pedal switch (cruise control/diesel direct fuel injection -F47-
- Location, see Fig. 3.
28. Clutch vacuum vent valve switch -F36-
- Location, see Fig. 3.
29. Instrument cluster:
- With exhaust Malfunction Indicator Lamp (MIL) -K83-. Notes on warning lamp
- With Electronic Power Control (EPC) Warning Lamp -K132-. (check) Notes on EPC warning lamp.
30. Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) -G131- and Oxygen Sensor (O2S) heater 2 -Z30-
- Bank 2, sensor 2
- Check aging of oxygen sensors behind catalytic converter
- Check heating of oxygen sensors behind catalytic converter
31. Heated oxygen sensor (HO2S) 2 -G108- and Oxygen Sensor (O2S) 2 heater -Z28-
- Bank 2, sensor 1
- Constant heated oxygen sensor (HO2S)
- Check oxygen sensors and oxygen sensor control before catalytic converter
- Check aging of oxygen sensors before catalytic converter
- Check heating of oxygen sensors before catalytic converter
32. Fuel pressure regulator
- Checking for vehicles up to 06.03
- Integrated in fuel filter for vehicles as of 07.03
- Checking for vehicles as of 07.03
33. Knock Sensor (KS) 2 -G66-
- Bank 2
- Under intake manifold
34. Intake manifold change-over valve -N156-
- Location, see Fig. 9.
35. Knock Sensor (KS) 1 -G61-
- Cylinder bank 1
- Under intake manifold
36. Ground connection
- Right hand side engine support
37. Not installed
Fig. 1 Location of Throttle Position (TP) sensor -G79- and Sender 2 for accelerator pedal position -G185-
- Incorporated in accelerator pedal module (arrow)
NOTE: The Throttle Position (TP) sensor -G79- and Sender -2- for accelerator pedal position -G185- are incorporated in the accelerator pedal module and cannot be replaced separately.
Removing and installing gas pedal module:
Fig. 2 Location of Fuel Pump (FP) relay -J17-
- On relay carrier in driver's footwell (left side), relay position 1 (arrow)
Fig. 3 Location Brake light switch -F- and Brake pedal switch (cruise control/diesel direct fuel injection -F47-, Clutch vacuum vent valve switch -F36-
1. Clutch Vacuum Vent Valve Switch -F36-
2. Brake light switch -F-, Brake Pedal Switch (cruise control/Diesel Direct Fuel Injection -F47-
Removing and installing switches
Fig. 4 Location, Engine Control Module in electronics box (plenum chamber)
Fig. 5 Locations in electronics box (plenum chamber).
1.1 Coolant circulation pump relay -J151- (hot countries only)
1.2 Not used
2. Motronic Engine Control Module (ECM) power supply relay -J271-
3. Secondary Air Injection (AIR) pump relay -J299-
A. Fuse S282 for engine electronics
B. Fuse S130 for secondary air pump
C. Not used
Fig. 6 Identification of connector bracket - right side of vehicle
1. 6-pin connector, black
for Heated Oxygen Sensor (HO2S) -G39- and Oxygen Sensor (O2S) heater -Z19- (bank 1, sensor 1)
2. 3-pin connector, blue
for Knock Sensor (KS) 1 -G61-
3. 4-pin connector, green
for Oxygen Sensor (O2S) 2 behind three way catalytic converter (TWC) -G130- and Oxygen Sensor (O2S) heater 1 -Z29- (bank 1, sensor 2)
4. 3-pin connector, black
for terminal 50
Fig. 7 Identification of connector bracket - left side of vehicle
1. 4-pin connector, brown
for Oxygen Sensor (O2S) 2 behind three way catalytic converter (TWC) -G131- and Oxygen Sensor (O2S) heater 2 -Z30- (bank 2, sensor 2)
2. 3-pin connector, gray
for Engine speed (RPM) sensor -G28-
3. 3-pin connector, blue for Knock Sensor (KS) 2 -G66-
4. 6-pin connector, black
for Heated Oxygen Sensor (HO2S) 2 -G108- and Oxygen Sensor (O2S) 2 heater -Z28- (bank 1, sensor 1)
NOTE:
To gain access to the harness connectors, you must remove the cover on left side of engine compartment, disconnect cable to coolant shortage indicator switch at bottom of expansion tank, remove screw for coolant expansion tank (arrow) and lay aside. Coolant hoses -1 to 3- do not have to be disconnected.
Fig. 8 Location of Brake booster pressure sensor -G294-
Fig. 9 Location of Intake manifold change-over valve -N156-
- Clipped to vacuum module