Computers and Control Systems: Locations
Component Locations, Overview
Components A to F are not shown in the exploded view.
A - Brake Light Switch (F) and Brake Vacuum Vent Valve Switch (F47)
• In footwell on pedal bracket near brake pedal
B - Data Link Connector (DLC)
• In knee protection on driver's side
C - Fuel Pump (FP) Relay (J17)
• In the micro-central electrics behind storage compartment on driver' side, relay position 4
• Installation location => [ Location of ] , => [ Locations on connector bracket ]
D - Clutch Vacuum Vent Valve Switch (F36)
• In footwell on pedal bracket near brake pedal
E - Throttle Position (TP) Sensor ( G79) and Sender - 2 - for accelerator pedal position (G185)
• In footwell on accelerator pedal (both sensors are located in one housing)
F - Electronic Power Control (EPC) warning lamp (K132)
• In instrument cluster
• With Electronic Power Control (EPC) warning lamp ( K132). Notes for EPC warning lamp. Refer to => [ Electronic Power Control Warning Lamp ] Electronic Power Control Warning Lamp.
• With exhaust Malfunction Indicator Lamp (MIL). Notes for Malfunction Indicator Lamp (MIL). Refer to => [ Malfunction Indicator Lamp ] Malfunction Indicator Lamp.
1 Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80)
• Checking => [ , checking ] Testing and Inspection
2 Heated Oxygen Sensor (HO2S) (G39) 55 Nm
• Constant oxygen sensor
• Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC). Refer to => [ Oxygen Sensor and Sensor Control before Catalytic Converter, Checking ] Oxygen Sensor and Sensor Control Before Catalytic Converter, Checking
• Check oxygen sensor aging of oxygen sensor before catalytic converter, refer to => [ Oxygen Sensor before Catalytic Converter, Checking ] Oxygen Sensor Before Catalytic Converter, Checking
• Check oxygen sensor heating for Oxygen Sensor (O2S) before TWC, refer to => [ Oxygen Sensor Heater before Catalytic Converter, Checking ] Oxygen Sensor Heater Before Catalytic Converter, Checking
• Removing and installing, refer to => [ Oxygen Sensor ] Service and Repair
3 Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130) 55 Nm
• Check Oxygen Sensor (O2S) and oxygen sensor control behind TWC, refer to => [ Oxygen Sensor and Sensor Control after Catalytic Converter, Checking ] Oxygen Sensor and Sensor Control After Catalytic Converter, Checking
• Check oxygen sensor heater for Oxygen Sensor (O2S) behind TWC, refer to => [ Oxygen Sensor Heater after Catalytic Converter, Checking ] Oxygen Sensor Heater After Catalytic Converter, Checking
• Removing and installing. Refer to => [ Oxygen Sensor ] Service and Repair.
4 Combi valve for secondary air inlet
• Checking, removing and installing, refer to => Exhaust System Exhaust System
5 Engine Coolant Temperature (ECT) Sensor (G62 )
• Checking, refer to => [ Engine Coolant Temperature Sensor, Checking ] Engine Coolant Temperature Sensor, Checking
• If necessary, release pressure of cooling system before removing
6 Engine Speed (RPM) Sensor (G28)
• Checking, refer to => [ Engine Speed Sensor, Checking ] Engine Speed Sensor, Checking
7 Secondary Air Injection (AIR) Solenoid Valve ( N112)
• Location => [ Location of and Recirculating valve for
turbocharger ]
•
• Connector green
8 Bracket for connectors
• Location => [ Locations on connector bracket ]
• Accessible with coolant expansion tank removed and moved to side
9 Bracket for connectors
• Location => [ Locations on connector bracket ]
• Accessible with coolant expansion tank removed and moved to side
10 Electronics box (plenum chamber)
• Location for Motronic Engine Control Module (ECM) (J220) with Barometric Pressure (BARO) Sensor (F96)
• Location for Motronic Engine Control Module (ECM) Power Supply Relay (J271)
• Installation locations => [ Location of Engine Control Module (ECM) in electronics
box (plenum chamber) ] and => [ Component locations in electronics box (plenum
chamber). ]
• Check voltage supply of ECM, refer to => [ Engine Control Module Power Supply, Checking ] Engine Control Module Power Supply, Checking
• Procedure to follow after open circuit in voltage supply, refer to => [ Voltage Supply Interruption ] Programming and Relearning
• Replacing ECM, refer to => [ Engine Control Module without Metal Anti-Theft Housing, Replacing ] Engine Control Module Without Metal Anti-Theft Housing, Replacing
• Component location for Engine Electronics Fuse ( S282) for Motronic
11 Electronics box (plenum chamber)
• Location for Secondary Air Injection (AIR) Pump Relay (J299)
• Check Secondary Air Injection (AIR) Pump Relay ( J299).
12 Charge Air Pressure Sensor (G31)
• Location: Charge Air Pressure Sensor (G31) is installed into top of charge air cooler
• Checking, refer to => Fuel Delivery and Air Induction Fuel Delivery and Air Induction
13 Throttle Valve Control Module (J338)
• With Throttle drive (power accelerator activation) (G186 ), Angle sensor => [ (Item 1) ] for throttle drive (power accelerator activation) (G187) and Angle sensor => [ (Item 2) 55
Nm ] for throttle drive (power accelerator activation) (G188)
• Checking, refer to => [ Throttle Valve Control Module, Checking ] Throttle Valve Control Module, Checking
• When replacing, perform adaptation, refer to => [ Throttle Valve Control Module, Adapting ] Throttle Valve Control Module, Adapting
14 Intake Air Temperature (IAT) Sensor (G42)
• Checking, refer to => [ Intake Air Temperature Sensor, Checking ] Intake Air Temperature Sensor, Checking
15 Recirculating valve for turbocharger (N249)
• Location => [ Location of and Recirculating valve for
turbocharger ]
• Checking, refer to => Fuel Delivery and Air Induction Fuel Delivery and Air Induction
16 Knock Sensor (KS) 1 (G61)
17 Knock Sensor (KS) 2 (G66)
18 Camshaft Position (CMP) Sensor (G40)
• Checking, refer to => [ Camshaft Position Sensor, Checking ] Camshaft Position Sensor, Checking
19 Fuel Injectors
• Cylinder 1 Fuel Injector (N30)
• Cylinder 2 Fuel Injector (N31)
• Cylinder 3 Fuel Injector (N32)
• Cylinder 4 Fuel Injector (N33)
• Checking, refer to => [ Fuel Injectors, Checking ] Fuel Injectors, Checking
• Removing and installing, refer to => [ Fuel Injectors ] Removal and Replacement
20 Ignition Coils
• Ignition Coil 1 with Power Output Stage (N70)
• Ignition Coil 2 with Power Output Stage (N127)
• Ignition Coil 3 with Power Output Stage (N291)
• Ignition Coil 4 with Power Output Stage (N292)
• Checking, refer to => [ Ignition Coils with Power Output Stages, Checking ] Ignition Coils With Power Output Stages, Checking
21 Wastegate Bypass Regulator Valve (N75)
• Checking, refer to => Fuel Delivery and Air Induction Fuel Delivery and Air Induction
22 Mass Air Flow (MAF) Sensor (G70)
• Checking, refer to => [ Mass Air Flow Sensor, Checking ] Testing and Inspection
23 Secondary Air Injection (AIR) Pump Motor (V101 )
•
Locations on connector bracket
The following connections are located underneath the coolant expansion tank:
1. 3-pin connector, blue
For Knock Sensor (KS) 2 (G66)
1. 4-pin connector, brown
For Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130) and Oxygen Sensor (O2S) Heater 1 ( Z29) (bank 1, sensor 2)
3 3-pin connector, grey
For Engine Speed (RPM) Sensor (G28)
4 3-pin connector, green
For Knock Sensor (KS) 1 (G61)
5 6-pin connector, black
For Oxygen Sensor (O2S) (G39) and Oxygen Sensor (O2S) Heater (Z19) (bank 1, sensor 1)
Location of Fuel Pump (FP) Relay (J17)
• on the 9-unit relay carrier in driver's footwell, left, position 1
Checking Fuel Pump (FP) Relay (J17). Refer to => [ Fuel Pump Relay and Relay Activation, Checking ] Fuel Pump Relay and Relay Activation, Checking.
Location of Brake Light Switch (F) and Brake Vacuum Vent Valve Switch (F47), Clutch Vacuum Vent Valve Switch (F36)
1. Brake Light Switch (F), Brake Vacuum Vent Valve Switch (F47)
2. Clutch Vacuum Vent Valve Switch (F36)
Removing and installing switches
Refer to => Brakes and Traction Control Brakes and Traction Control
Refer to => Manual Transmission/Transaxle
Location of Throttle Position (TP) Sensor 1 (G79) and Accelerator Pedal Position Sensor 2 (G185)
• Both the Throttle Position (TP) Sensor 1 (G79) and the Sender - 2 - for accelerator pedal position (G185) are stored in one housing.
Location of Engine Control Module (ECM) in electronics box (plenum chamber)
Replacing ECM (without metal anti-theft housing). Refer to => [ Engine Control Module without Metal Anti-Theft Housing, Replacing ] Engine Control Module Without Metal Anti-Theft Housing, Replacing.
Replacing ECM (with metal anti-theft housing). Refer to => [ Engine Control Module with Metal Anti-Theft Housing, Replacing ] Engine Control Module With Metal Anti-Theft Housing, Replacing.
Component locations in electronics box (plenum chamber).
1 .1 - Not used
1 .2 - Not used
2 Motronic Engine Control Module (ECM) Power Supply Relay (J271)
3 Secondary Air Injection (AIR) Pump Relay (J299)
4 Not used
A - Fuse (S282) for engine electronics
B - Fuse (S130) for secondary air pump
C - Not used
Location of Secondary Air Injection (AIR) Solenoid Valve (N112) and Recirculating valve for turbocharger (N249)
• Location: underneath intake line
1. Secondary Air Injection (AIR) Solenoid Valve ( N112)
2. Recirculating valve for turbocharger (N249)
• The illustration shows bottom view of intake line.
Location of Charge Air Pressure Sensor (G31)
Charge Air Pressure Sensor (G31) (arrow) screwed into top of charge air cooler.