Computers and Control Systems: Locations
Fuel Injection System Component Locations
1 Evaporative Emission (EVAP) canister purge regulator valve (N80)
• Checking, refer to => [ EVAP Canister Purge Regulator Valve, Checking ] Testing and Inspection
2 Mass Air Flow (MAF) sensor (G70)
• With intake air temperature (IAT) sensor (G42)
• Checking, refer to => [ Mass Air Flow Sensor, Checking ] Testing and Inspection
3 Camshaft Position (CMP) sensor 3 (G300)
• For exhaust camshaft
• Cylinder bank 1
• Checking, refer to => [ Camshaft Position Sensor, Checking ] Camshaft Position Sensor, Checking
4 Camshaft Position (CMP) sensor (G40)
• For intake camshaft
• Cylinder bank 1
• Checking, refer to => [ Camshaft Position Sensor, Checking ] Camshaft Position Sensor, Checking
5 Pressure sensor for brake booster pressure sensor (G294)
• For vehicles with automatic transmission
• Location => [ Location of ]
6 Camshaft Position (CMP) sensor (G163)
• For intake camshaft
• Cylinder bank 2
• Checking, refer to => [ Camshaft Position Sensor, Checking ] Camshaft Position Sensor, Checking
7 Camshaft Position (CMP) sensor 4 (G301)
• For exhaust camshaft
• Cylinder bank 2
• Checking, refer to => [ Camshaft Position Sensor, Checking ] Camshaft Position Sensor, Checking
8 Ignition coils with power output stage, bank 2
• Ignition Coil 4 with Power Output Stage (N292)
• Ignition Coil 5 with Power Output Stage (N323)
• Ignition Coil 6 with Power Output Stage (N324)
• Checking, refer to => [ Ignition Coils with Power Output Stages, Checking ] Ignition Coils With Power Output Stages, Checking
9 Electronics box (plenum chamber)
• Locations => [ Location, Engine Control Module in electronics
box (plenum chamber) ] and => [ Locations in electronics box (plenum chamber) ]
• Location for Motronic Engine Control Module (ECM) (J220)
• Check power supply to engine control module, refer to => [ ECM Power Supply, Checking ] ECM Power Supply, Checking.
• Procedure following interruption of voltage supply, refer to => [ Interruption of Voltage Supply ] Interruption of Voltage Supply
• Replace engine control module:
• With anti-theft housing, refer to => [ Engine Control Module with Metal Anti-Theft Housing ] Engine Control Module With Metal Anti-Theft Housing
• Without anti-theft housing, refer to => [ Engine Control Module without Metal Anti-Theft Housing ] Engine Control Module Without Metal Anti-Theft Housing
• Location for Motronic Engine Control module (ECM) power supply relay (J271)
• Test for Motronic Engine Control Module (ECM) power supply relay (J271), refer to => [ ECM Power Supply Relay, Checking ] ECM Power Supply Relay, Checking
• Location for Secondary Air Injection (AIR) pump relay (J299).
• Check Secondary Air Injection (AIR) pump relay ( J299).
• Location for fuse (S130) for secondary air pump
• Location for Brake booster relay (J569)
10 Brake system vacuum pump (V192)
• For vehicles with automatic transmission
11 Valve 2 for camshaft adjustment (N208), Camshaft adjustment valve 2 (exhaust) (N319)
• Cylinder bank 2
• Checking, refer to => Engine Mechanical Engine
12 Fuel injectors, bank 2
• Cylinder 4 Fuel Injector (N33)
• Cylinder 5 Fuel Injector (N83)
• Cylinder 6 Fuel Injector (N84)
• Checking, refer to => [ Fuel Injectors, Checking ] Fuel Injectors, Checking
• Removing and installing, refer to => [ Fuel Injectors ] Removal and Replacement.
13 Fuel injectors, bank 1
• Cylinder 1 Fuel Injector (N30)
• Cylinder 2 Fuel Injector (N31)
• Cylinder 3 Fuel Injector (N32)
• Checking, refer to => [ Fuel Injectors, Checking ] Fuel Injectors, Checking
• Removing and installing, refer to => [ Fuel Injectors ] Removal and Replacement.
14 Camshaft Adjustment Valve 1 (N205) Camshaft adjustment valve 1 (exhaust) (N318)
• Cylinder bank 1
• Checking, refer to => Engine Mechanical Engine
15 Ignition coils with power output stage, bank 1
• Ignition Coil 1 with Power Output Stage (N70)
• Ignition Coil 2 with Power Output Stage (N127)
• Ignition Coil 3 with Power Output Stage (N291)
• Checking, refer to => [ Ignition Coils with Power Output Stages, Checking ] Ignition Coils With Power Output Stages, Checking
16 Secondary Air Injection (AIR) pump motor (V101 )
• Checking, refer to => Exhaust System Exhaust System
17 - Heated Oxygen Sensor (HO2S) (G39) and Oxygen sensor (O2S) heater (Z19 )
• Bank 1, sensor 1
• Constant Heated Oxygen Sensor (HO2S)
• Check oxygen sensors and oxygen sensor control before catalytic converter, refer to => [ Oxygen Sensors and Control before Catalytic Converter, Checking ] Oxygen Sensors and Control Before Catalytic Converter, Checking
• Check aging of oxygen sensors before catalytic converter, refer to => [ Oxygen Sensors before Catalytic Converter, Checking Aging ] Oxygen Sensors Before Catalytic Converter, Checking Aging
• Check heating of oxygen sensors before catalytic converter, refer to => [ Oxygen Sensors before Catalytic Converter, Checking Heating ] Oxygen Sensors Before Catalytic Converter, Checking Heating
• Removing and installing, refer to => [ Oxygen Sensors before Catalytic Converter ] Oxygen Sensors Before Catalytic Converter.
18 - Bracket for connectors
• For right side of vehicle
• Assignment => [ Identification of connector bracket - right
side of vehicle ]
19 - Oxygen sensor (O2S) behind three way catalytic converter (TWC) (G130) and Oxygen Sensor (O2S) heater 1 (Z29)
• Bank 1, sensor 2
• Check oxygen sensors and oxygen sensor control behind catalytic converter, refer to => [ Oxygen Sensors and Control after Catalytic Converter, Checking ] Oxygen Sensors and Control After Catalytic Converter, Checking
• Check heating of oxygen sensors behind catalytic converter, refer to => [ Oxygen Sensors after Catalytic Converter, Checking Heating ] Oxygen Sensors After Catalytic Converter, Checking Heating
• Removing and installing, refer to => [ Oxygen Sensors after Catalytic Converter ] Oxygen Sensors After Catalytic Converter.
20 - Engine Coolant Temperature (ECT) sensor (G62)
• For engine control module
• On coolant line behind cylinder head, bank 1
• With Engine Coolant Temperature (ECT) sensor ( G2)
• Checking, refer to => [ Engine Coolant Temperature Sensor, Checking ] Engine Coolant Temperature Sensor, Checking
• If necessary, release cooling system pressure before removal
21 - Throttle valve control module (J338)
• With Throttle Drive (for Electronic Power Control (EPC)) (G186), Throttle Drive Angle Sensor 1 (for Electronic Power Control (EPC)) (G187) and Angle sensor -2- for Throttle Drive Angle Sensor 2 (for Electronic Power Control (EPC)) (G188)
• Checking, refer to => [ Throttle Valve Control Module, Checking ] Throttle Valve Control Module, Checking
• Perform adaptation on replacing, refer to => [ Throttle Valve Control Module, Adaptation ] Throttle Valve Control Module, Adaptation
22 - Secondary Air Injection (AIR) solenoid valve (N112)
• Checking, refer to => Exhaust System Exhaust System
23 - Engine speed (RPM) sensor ( G28)
• In gear case above ring gear
• Checking, refer to => [ Engine Speed Sensor, Checking ] Engine Speed Sensor, Checking
24 - Bracket for connectors
• For left side of vehicle
• Assignment => [ Identification of connector bracket - left side
of vehicle ]
25 - Throttle Position (TP) sensor (G79) and Sender -2- for accelerator pedal position (G185)
• Location => [ Location of and ]
• Checking, refer to => [ Accelerator Position Sensor, Checking ] Accelerator Position Sensor, Checking
• Adapting kick down function, refer to => [ Kickdown Function, Adapting ] Testing and Inspection
26 - Fuel Pump (FP) relay (J17 )
• Location => [ Location of ]
• Checking, refer to => [ Fuel Pump Relay and Activation, Checking ] Fuel Pump Relay and Activation, Checking
27 - Brake light switch (F) and Brake Pedal Switch (F47)
• Location => [ Location and (cruise
control/diesel direct fuel injection), ]
• Checking, refer to => [ Brake Lamp and Brake Pedal Switches, Checking ] Testing and Inspection
28 - Clutch vacuum vent valve switch (F36)
• Location => [ Location and (cruise
control/diesel direct fuel injection), ]
• Checking, refer to => [ Clutch Pedal Switch, Checking ] Clutch Pedal Switch, Checking
29 - Instrument cluster:
• With exhaust Malfunction Indicator Lamp (MIL) ( K83). Notes on warning lamp, refer to => [ Exhaust Malfunction Indicator Lamp ] Exhaust Malfunction Indicator Lamp
• With Electronic Power Control (EPC) Warning Lamp ( K132). (check) Notes on EPC warning lamp, refer to => [ Electronic Power Control Warning Lamp ] Electronic Power Control Warning Lamp.
30 - Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) (G131) and Oxygen Sensor (O2S) heater 2 (Z30)
• Bank 2, sensor 2
• Check aging of oxygen sensors behind catalytic converter, refer to => [ Oxygen Sensors after Catalytic Converter, Checking Aging ] Oxygen Sensors After Catalytic Converter, Checking Aging
• Check heating of oxygen sensors behind catalytic converter, refer to => [ Oxygen Sensors after Catalytic Converter, Checking Heating ] Oxygen Sensors After Catalytic Converter, Checking Heating
• Removing and installing, refer to => [ Oxygen Sensors after Catalytic Converter ] Oxygen Sensors After Catalytic Converter.
31 - Heated oxygen sensor (HO2S) 2 (G108) and Oxygen Sensor (O2S) 2 heater ( Z28)
• Bank 2, sensor 1
• Constant heated oxygen sensor (HO2S)
• Check oxygen sensors and oxygen sensor control before catalytic converter, refer to => [ Oxygen Sensors and Control before Catalytic Converter, Checking ] Oxygen Sensors and Control Before Catalytic Converter, Checking
• Check aging of oxygen sensors before catalytic converter, refer to => [ Oxygen Sensors before Catalytic Converter, Checking Aging ] Oxygen Sensors Before Catalytic Converter, Checking Aging
• Check heating of oxygen sensors before catalytic converter, refer to => [ Oxygen Sensors before Catalytic Converter, Checking Heating ] Oxygen Sensors Before Catalytic Converter, Checking Heating
• Removing and installing, refer to => [ Oxygen Sensors before Catalytic Converter ] Oxygen Sensors Before Catalytic Converter.
32 - Fuel pressure regulator
• Integrated in fuel filter for vehicles as of 07.03
• Checking for vehicles as of 07.03, refer to => [ System Pressure and Holding Pressure, from 07.03, Checking ] System Pressure and Holding Pressure, From 07.03, Checking
33 - Knock Sensor (KS) 2 (G66 )
• Bank 2
• Under intake manifold
34 - Intake manifold change-over valve (N156)
• Location => [ Location of ]
• Checking, Refer to => [ Intake Manifold Change-Over ] Intake Manifold Change-Over
35 - Knock Sensor (KS) 1 (G61 )
• Cylinder bank 1
• Under intake manifold
36 - Ground connection
• Right hand side engine support
37 - Not installed
Location of Throttle Position (TP) sensor (G79) and Accelerator Pedal Position Sensor 2 (G185)
• Incorporated in accelerator pedal module (arrow)
• The Throttle Position (TP) sensor (G79) and Sender -2- for accelerator pedal position (G185) are incorporated in the accelerator pedal module and cannot be replaced separately.
Removing and installing gas pedal module:
Refer to => Fuel Delivery and Air Induction Fuel Delivery and Air Induction
Location of Fuel Pump (FP) relay (J17)
• On relay carrier in driver's footwell (left side), relay position 1 (arrow)
Location Brake light switch ( F) and Brake pedal switch (F47) (cruise control/diesel direct fuel injection), Clutch vacuum vent valve switch (F36)
1. Clutch Vacuum Vent Valve Switch (F36)
2. Brake light switch (F), Brake Pedal Switch (F47) (cruise control/Diesel Direct Fuel Injection)
Removing and installing switches
Refer to => Manual Transmission/Transaxle
Refer to => Brakes and Traction Control Brakes and Traction Control
Location, Engine Control Module in electronics box (plenum chamber)
Locations in electronics box (plenum chamber)
1.1 Coolant circulation pump relay (J151) (hot countries only)
1.2 Not used
2 Motronic Engine Control Module (ECM) power supply relay (J271)
3 Secondary Air Injection (AIR) pump relay (J299)
A Fuse (S282) for engine electronics
B Fuse (S130) for secondary air pump
C Not used
Identification of connector bracket - right side of vehicle
1. 6-pin connector, black for Heated Oxygen Sensor (HO2S) (G39) and Oxygen Sensor (O2S) heater ( Z19) (bank 1, sensor 1)
2. 3-pin connector, blue for Knock Sensor (KS) 1 ( G61)
3. 4-pin connector, green for Oxygen Sensor (O2S) 2 behind three way catalytic converter (TWC) (G130) and Oxygen Sensor (O2S) heater 1 (Z29) (bank 1, sensor 2)
4. 3-pin connector, black for terminal 50
Identification of connector bracket - left side of vehicle
1. 4-pin connector, brown for Oxygen Sensor (O2S) 2 behind three way catalytic converter (TWC) (G131) and Oxygen Sensor (O2S) heater 2 (Z30) (bank 2, sensor 2)
2. 3-pin connector, gray for Engine speed (RPM) sensor (G28)
3. 3-pin connector, blue for Knock Sensor (KS) 2 ( G66)
4. 6-pin connector, black for Heated Oxygen Sensor (HO2S) 2 (G108) and Oxygen Sensor (O2S) 2 heater (Z28) (bank 1, sensor 1)
• To gain access to the harness connectors, you must remove the cover on left side of engine compartment, disconnect cable to coolant shortage indicator switch at bottom of expansion tank, remove screw for coolant expansion tank (arrow) and lay aside. Coolant hoses -1 to 3- do not have to be disconnected.
Location of Brake booster pressure sensor (G294)
Location of Intake manifold change-over valve (N156)
• Clipped to vacuum module