Injection System Components, Removing and Installing

Injection System Components, Removing And Installing







1 Air cleaner
2 Mass Air Flow (MAF) sensor -G70-*
- 5 pin connector
3 To EVAP Canister Purge Regulator Valve -N80-*/**
- EVAP system
4 Intake hose
5 Heater element -N79-
- For crankcase breather
- Resistance at ambient temperature (approx. 25 degree C): Specification: 7 to 12 Ohm
6 Crankcase breather pressure regulating valve
7 Intake manifold - upper section
8 Throttle valve control module -J338-*
- 5-pin connector
- If replaced match engine control module
- If replaced adapt control module for automatic transmission:
9 Connector, 28 pin
- Only disconnect or connect with ignition switched off
- Release to disconnect
10 10 Nm
11 Bracket
12 Motronic Engine Control Module (ECM) -J220-*
- Installed location: In plenum chamber
- Checking voltage supply
- Procedure after voltage supply open circuit
13 Connector, 52-pin
- Only disconnect or connect with ignition switched off
- Release to disconnect
14 To brake servo
15 Retaining clip
- Check seated securely
16 O-ring
- Replace if damaged
17 Engine Coolant Temperature (ECT) Sensor -G62-*
- For engine control module
- With engine coolant temperature (ECT) sensor -G2-
- If necessary release pressure in cooling system before removing
18 Connector
- For engine coolant temperature (ECT) sensor -G62-
- 4-pin
- Black
- Contacts gold plated
19 Connector
- Black, 2-pin
- For injector (-N30- through -N33-)
20 20 Nm
21 Support
- Between intake manifold and engine block
22 Gasket
- Always replace
23 Intake manifold - lower section
24 Engine speed sensor -G28-*
25 Spacer ring
26 Oxygen sensor 2 after catalytic converter -G130-*, 50 Nm
- Location: In rear of catalytic converter
- Grease only the threads with G 052 112 A3; G 052 112 A3 must not get into the slots on the probe body
- Checking Oxygen sensor and Oxygen sensor control after catalytic converter
- Checking Heated Oxygen Sensor (HO2S) for Oxygen sensor after catalytic converter
27 4-pin connector
- For Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- and Oxygen Sensor (O2S) Heater 1 -Z29-
- Installed location, engine compartment overview
28 Heated Oxygen Sensor (HO2S) before catalytic converter -G39-*, 50 Nm
- Location: In front exhaust pipe
- Grease only the threads with G 052 112 A3; G 052 112 A3 must not get into the slots on the probe body
- Checking Oxygen sensor and Oxygen sensor control before catalytic converter
- Checking Heated Oxygen Sensor (HO2S) before catalytic converter
29 4-pin connector
- Black for Heated Oxygen Sensor (HO2S) -G39- and Oxygen Sensor (O2S) Heater -Z19-
- Installed location, engine compartment overview
30 Heat shield
31 Vent hose
32 Warm air intake
- From warm air collector on exhaust manifold
33 Retaining ring
34 Supply pipe/hose
- White arrow
- Secure with spring-type clips
- From fuel filter
35 Return pipe
- Blue arrow
- Secure with spring-type clips
- Check securely seated
- To the fuel delivery unit in fuel tank