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Component Locations, Overview - II



Component Locations, Overview (Vehicles With Engine Code BBW)







1. Valve -1- for camshaft adjustment -N205-*
2. Combination valve
3. Camshaft Position (CMP) sensor -G40-*
- Terminals of sensor and connector are gold-plated
4. Connector, 81-pin
- For Engine Control Module (ECM)
- Switch ignition off before disconnecting or connecting connector
- Disengage to pull off
5. Motronic Engine Control Module (ECM) -J220-*
- Component location: in plenum chamber
- Checking voltage supply.
6. Connector, 40-pin
- For Engine Control Module (ECM)
- Switch ignition off before disconnecting or connecting connector
- Disengage to pull off
7. Engine Coolant Temperature (ECT) sensor -G62-*
- For Engine Control Module (ECM)
- With Engine Coolant Temperature (ECT) sensor -G2-
- If necessary, release pressure in cooling system before removing
8. Evaporative Emission (EVAP) canister purge regulator valve-N80-*
- Installation position: Arrow points in direction of flow
9. Intake manifold
10. Throttle valve control module -J338-*
11. Positive Crankcase Ventilation (PCV) heating element -N79-
12. Mass Air Flow (MAF) sensor -G70-* with Intake Air Temperature (IAT) sensor -G42-*
13. Protective housing for relay
- Relay position assignment in protective housing, see Fig. 1
14. Air filter
15. Protective housing
- Protective housing
16. Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- bank 1*, 50 Nm
- Component location: In rear catalytic converter
- Only use "G 052 112 A3" to grease thread; do not let "G 052 112 A3" get onto slit of oxygen sensor
- Voltage supply of oxygen sensor heater via Fuel Pump (FP) relay -J17-
- Check oxygen sensor heater for Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC).
- Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC).
17. 4-pin harness connector
- Brown
- Brown
- For Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- and Oxygen Sensor (O2S) Heater 1 (behind Three Way Catalytic Converter (TWC)) -Z29-
- For Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- and Oxygen Sensor (O2S) Heater 1 (behind Three Way Catalytic Converter (TWC)) -Z29-
18. Oxygen Sensor (O2S) in Center Three Way Catalytic Converter (TWC), Bank 1 -G465-*, 50 Nm
- Component location: in center catalytic converter
- Only use "G 052 112 A3" to grease thread; do not let "G 052 112 A3" get onto slit of oxygen sensor
- Only use "G 052 112 A3" to grease thread; do not let "G 052 112 A3" get onto slit of oxygen sensor
- Check oxygen sensor heater for Oxygen Sensor (O2S) in Center Three Way Catalytic Converter (TWC).
- Check Oxygen Sensor (O2S) and oxygen sensor control in center Three Way Catalytic Converter (TWC).
19. 4-pin harness connector
- - Black
- Terminals 3 and 4 gold-plated
- For Oxygen Sensor (O2S) in Center Three Way Catalytic Converter (TWC), Bank 1 -G465- and Oxygen Sensor (O2S) Heater - Center Three Way Catalytic Converter (TWC) -Z59-
- Component location of harness connectors, see Fig. 2
20. Exhaust Gas Temperature (EGT) sensor 1 -G235-*, 45 Nm
- Exhaust Gas Temperature (EGT) sensor 1 -G235-*, 45 Nm
21. Heated Oxygen Sensor (HO2S) -G39-* bank 1,50 Nm
- Component location: In exhaust manifold
- Use "G5" to grease thread only; do not let "G5" get onto slits of oxygen sensor body
- Voltage supply of oxygen sensor heater via Fuel Pump (FP) relay -J17-
- Check oxygen sensor heater for Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC).
- Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC).
22. 6-pin harness connector
- Terminals are gold-plated
- Black, 6-pin
- For Heated Oxygen Sensor (HO2S) -G39- and Oxygen Sensor (O2S) heater -Z19-
- Component location of harness connectors, see Fig. 2
23. 2-pin harness connector
- Terminals are gold-plated
- Black, 2-pin
- For Exhaust Gas Temperature (EGT) sensor 1 -G235-
- Component location of harness connectors, see Fig. 2
24. Knock Sensor (KS) 1 -G61-*
- Terminals of sensor and connector are gold-plated
- Contact surfaces between knock sensor and cylinder block must be free of corrosion, dirt and grease
25. Knock Sensor (KS) 2 -G66-*
- Terminals of sensor and connector are gold-plated
- Contact surfaces between knock sensor and cylinder block must be free of corrosion, dirt and grease
26. Fuel injectors (-N30- through -N33-)*
27. Secondary Air Injection (AIR) pump motor -V101-*
28. Engine Speed (RPM) sensor-G28-*
- Tightening torque: 10 Nm
29. Ignition coil with power output stage (-N70-, -N127-, -N291-, -N292-)*

Fig. 1 Relay position assignment in protective housing (engine compartment, left)







1. Secondary Air Injection (AIR) pump relay -J299-*
2. Motronic Engine Control Module (ECM) voltage supply relay -J271-*

NOTE:
- Remove battery Ground (GND) strap beforehand if tools are necessary for removal of relays or control modules from the relay carrier.
- Obtain radio code for radios with anti-theft coding before disconnecting battery.
- Relay position assignment may be different for various vehicle equipment. Current control number and installation position:
- Check relay activation.

Fig. 2 Component location of harness connectors







1. Protective housing, at right vehicle underside
2. For Exhaust Gas Temperature (EGT) sensor 1 -G235-
3. For Heated Oxygen Sensor (HO2S) -G39- bank 1
4. For Oxygen Sensor (O2S) in Center Three Way Catalytic Converter (TWC), Bank 1 -G465-
5. For Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- bank 1
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