Engine Control Module: Locations

Component locations overview

The components A to G are not shown in the exploded view.

A - Brake light switch -F- and brake pedal switch -F47-
- In footwell on pedal bracket near brake pedal
B - Data Link Connector (DLC)
- Located below the instrument cluster to the left of the steering column
C - Fuel pump (FP) relay -J17-
- In the micro-central electrics behind storage compartment on driver' side, relay position 4
D - Motronic Engine Control Module (ECM) power supply relay -J271-
- 3-compartment relay carrier in electrics box in plenum chamber, relay position 3

Component Locations, Overview:

E - Throttle Position (TP) sensor -G79- and Sender -2- for accelerator pedal position -G185-
- In footwell on accelerator pedal (both are accommodated in one housing)
F - "MIL" warning lamp
G - "EPC" warning lamp
1 - Evaporative emission (EVAP) canister purge regulator valve -N80-
2 - 3-pin connector For knock sensor (KS) 1 -G61-
- For knock sensor (KS) 1 -G61-
3 - 4-way connector
- For Oxygen Sensor Behind Three Way Catalytic Converter (TWC) -G130- and Oxygen Sensor (O2S) Heater 1 -Z29- downstream of catalytic converter
- Bank 1
4 - 4-way connector
- For Oxygen Sensor 2 Behind Three Way Catalytic Converter (TWC) -G131- and Oxygen Sensor (O2S) Heater -Z30- downstream of catalytic converter
- Bank 2
5 - Mass Air Flow (MAF) sensor -G70- with Intake Air Temperature (IAT) sensor -G42-
6 - 4-way connector
- For Heated Oxygen Sensor -G39- and Oxygen Sensor (O2S) Heater -Z19-
- Bank 1
7 - Valve 1 for camshaft adjustment -N205-
8 - Fuel pressure regulator
9 - Engine Coolant Temperature (ECT) sensor -G62-
- On coolant pipe behind cylinder head, bank 1
10 - 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-
11 - Secondary air injection (AIR) solenoid valve -N112-
12 - 4-way connector
- For Heated Oxygen Sensor (HO2S) 2 - G108- and Oxygen Sensor (O2S) 2 Heater -Z28- upstream of catalytic converter
- Bank 2
13 - 3-pin connector
- For Engine Speed (RPM) sensor -G28-
14 - Camshaft Position (CMP) sensor 2 -G163-
- Cylinder bank 2
15 - Secondary air injection (AIR) pump relay - J299-
- In electronic box in plenum chamber
16 - Motronic Engine Control Module (ECM) - J220-
- In electronic box in plenum chamber
17 - Ignition coils with output stages
- Cylinder bank 2
18 - 3-pin connector
- For knock sensor (KS) 2 -G66-
19 - Valve 2 for camshaft adjustment -N208-
20 - Intake manifold changeover valve
21 - Manifold intake changeover valve
- In S6 models Intake air switch-over valve - N335-
22 - Camshaft Position (CMP) sensor -G40-
- Cylinder bank 1
23 - Ignition coils with output stages
- Cylinder bank 1
24 - Secondary air injection (AIR) pump motor -V101-
- Underneath on right of longitudinal member