Injection System, Servicing
Injection system, servicing
Component locations overview
Engine codes BDC and BGD
The components A, B and C are not shown on the illustration.
A. Brake pedal switch -F47- or Brake light Switch -F
^ Together in one housing in footwell
B. Throttle Position (TP) sensor -G79- and Sender -2- for accelerator pedal position -G185
^ In footwell on accelerator pedal
C. Clutch vacuum vent valve switch -F36
^ In footwell
1. EVAP canister purge regulator valve -N80
2. Return line
^ Only engine with engine code BDC:
^ Secure with spring-type clips
3. Supply line
^ Secure with spring-type clips
4. Camshaft Position (CMP) sensor -G40
^ Below upper toothed belt guard
5. Intake manifold change-over valve -N156
6. Intake manifold upper part
7. Intake manifold lower part
8. Combination valve
9. Throttle valve control module -J338
10. Positive Crankcase Ventilation (PCV) heating element -N79-
^ For crankcase breather
^ Check heating element voltage supply between contacts 1 and 2 with engine running, Specification: min. 11.5 V
11. 81-pin connector
^ Only disconnect or connect with ignition switched off
^ Release to disconnect
12. Motronic Engine Control Module (ECM) -J220-
13. 40-pin connector
^ Only disconnect or connect with ignition switched off
^ Release to disconnect
14. Protective housing for relays
^ Secondary Air Injection (AIR) pump relay -J299
^ Motronic ECM power supply relay -J271-
^ Relay locations in protective housing; Refer to Fig. 1
15. Engine Coolant Temperature (ECT) sensor -G62-
^ Green
^ Gold plated contacts
^ For engine control module
^ With ECT sensor -G2
^ Release pressure in cooling system if necessary before removing components
16. Air cleaner
17. Mass Air Flow (MAP) sensor -G70- with Intake Air Temperature (IAT) sensor -G42-
^ Gold plated contacts
18. 3-pin connector
^ For Engine speed (RPM) sensor -G28
19. Ignition coils with final output stages -N70-, -N127-, -N291 -, -N292-
20. 10 Nm
21. Engine speed (RPM) sensor -G28
22. Secondary Air Injection (AIR) pump motor
23. Injector -N30-...-N33
24. Knock Sensor (KS) 2 -G66
25. Knock Sensor (KS) 1 -G61-
26. Intake Manifold Tuning (IMT) valve -2- -N261 -
27. 4-pin connector
^ Brown: for 02S Behind TWO -G130- and 02S heater 1 -Z29
^ Location: On right underside of vehicle; Refer to Fig. 2
28. Oxygen Sensor (02S) Behind Three Way Catalytic Converter-G130-,
29. 6-pin connector
^ Black: for H02S -G39- and 02S heater -Z19
^ Location: On right underside of vehicle; Refer to Fig 1.
30. Heated Oxygen Sensor (H02S) -G39-, 50 Nm
^ When replacing erase fault memory
^ Location: In exhaust manifold
^ Grease only threads with hot bolt paste G 052 112 A3. Grease must not get into slots on sensor body
^ Remove and install with 3337
31. Fuel pressure regulator
Engine code BEV
Components A, B and C are not shown in the illustration.
A. Brake pedal switch -F47- or Brake light switch -F
^ Together in one housing, in footwell
B. Throttle Position (TP) sensor -G79- and Sender -2- for accelerator pedal position -G185
^ In footwell on accelerator pedal:
C. Clutch vacuum vent valve switch -F36
^ In footwell
D. Fuel pressure regulator
^ Together with fuel filter
1. EVAP canister purge regulator valve -N80
2. Supply line
^ Secure with spring-type clips
3. Camshaft Position (CMP) sensor -G40
^ Below upper toothed belt guard
4. Intake manifold
5. Throttle valve control module -J338
^ When replacing, adapt (match) engine control module to throttle valve control module
^ Gold plated contacts
6. Combination valve
7. Positive Crankcase Ventilation (PCV) heating element -N79-
^ For crankcase breather
^ Check heating element voltage supply between contacts 1 and 2 with engine running, Specification: min. 11.5 V
8. 81-pin connector
^ Only disconnect or connect with ignition switched off
^ Release to disconnect
9. Motronic Engine Control Module -J220
^ On replacement, control module must be matched to electronic immobilizer
^ Location: Under left side inner plenum chamber cover in passenger compartment
10. 40-pin connector
^ Only disconnect or connect with ignition switched off
^ Release to disconnect
11. Protective housing for relays
^ Secondary Air Injection (AIR) pump relay -J299-
^ Motronic ECM power supply relay -J271-
^ Relay locations in protective housing; Refer to Fig. 1.
12. Engine Coolant Temperature (ECT) sensor -G62-
^ Green
^ Gold plated contacts
^ For engine control module
^ With ECT sensor -G2-
^ Release pressure in cooling system if necessary before removing components
13. Air cleaner
14. Mass Air Flow (MAP) sensor -G70- with Intake Air Temperature (IAT) sensor -G42-
^ Gold plated contacts
15. Main fuses
^ For additional protection
16. Ignition coils with final output stages -N70-, -N127-, -N291-, -N292-
17. 10 Nm
18. Engine speed (RPM) sensor -G28
19. Secondary Air Injection (AIR) pump motor -V101-
20. Injector -N30-...-N33
21. Knock Sensor (KS) 2 -G66-
22. Knock Sensor (KS) 1 -G61-
23. 4-pin connector
24. Oxygen sensor (O2S) Behind Three way Catalytic Converter
25. 6-pin connector
26. Heated Oxygen Sensor (H02S) -G39-, 50 Nm
27. 3-pin connector
^ For Engine speed (RPM) sensor -G28
Fig. 1 Location of 6-pin connector -1- for heated oxygen sensor
Fig. 2 Location of 4-pin connector -1- for oxygen sensor behind catalytic converter