ENGINE PERFORMANCE – Mercedes-Benz E320 4Matic 2003 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

3.2L

3.2L, Engine Performance Wiring Diagram (1 of 3) for Mercedes-Benz E320 4Matic 2003

List of elements for 3.2L, Engine Performance Wiring Diagram (1 of 3) for Mercedes-Benz E320 4Matic 2003:

• (if equipped)
• (left rear of engine compartment)
• Computer data lines system
• Cooling fans system
• Data link connector (lower left side of dash)
• Engine control module (me-sfi) (left rear of engine compartment)
• Fuse 7.5a
• Hot at all times
• Interior fuse box (left end of dash)
• Kickdown switch function may be replaced by accelerator pedal sensor
• Left oxygen sensor 1 (before twc) (behind left front wheel)
• Left oxygen sensor 2 (after twc) (behind left front wheel)
• Nca
• Pedal value sensor (left rear of engine compt)
• Purge control valve (left front of engine compt)
• Right oxygen sensor 1 (before twc) (behind right front wheel)
• Right oxygen sensor 2 (after twc) (behind right front wheel)
• Starting/ charging system
• Starting/charging system
• W15/3

3.2L, Engine Performance Wiring Diagram (2 of 3) for Mercedes-Benz E320 4Matic 2003

List of elements for 3.2L, Engine Performance Wiring Diagram (2 of 3) for Mercedes-Benz E320 4Matic 2003:

• (front end of eng) variable intake manifold switchover valve
• (left front footwell) w15/2
• (right front of eng compt) air pump switchover valve
• (right side of eng) egr pressure transducer
• Activated charcoal filter shutoff valve (right rear wheelhouse)
• Air pump relay
• Camshaft hall-effect sensor (right rear of eng)
• Circuit relay engine
• Crankshaft sensor (under vehicle, near crankshaft)
• Driver side sam control module with fuse & relay module (left rear of eng compt)
• Electric air pump (right front of eng compt)
• Fuel pump (under left rear in fuel tank)
• Fuel pump relay module
• Fuel tank pressure sensor (in fuel tank, under left
• Fuse 15a
• Fuse 25a
• Fuse 40a
• Hot at all times
• Hot film maf sensor (left rear of eng compt)
• Kickdown switch (left front footwell)
• Pnk
• Rear sam control module with fuse & relay module (left side of trunk)
• Rear seat)
• Throttle valve actuator (center rear of eng)
• W11/3 (top of cyl head, between cyl 6 & 7)
• W15/2 (left front footwell)
• W6 (left rear wheelhousing)

3.2L, Engine Performance Wiring Diagram (3 of 3) for Mercedes-Benz E320 4Matic 2003

List of elements for 3.2L, Engine Performance Wiring Diagram (3 of 3) for Mercedes-Benz E320 4Matic 2003:

• (bottom right side of engine) oil sensor
• (right front of eng compt) ect sensor
• (right front of eng compt) pressure sensor
• Driver side sam control module with fuse & relay module (left rear of eng compt)
• Engine control module (me-sfi) (left rear of eng compt)
• Fuel injectors
• Fuse 15a
• Hot in run or start
• Ign coil
• Ign coil coil
• Left knock sensor 2 (in valley of engine block)
• Pnk
• Radio interference suppression capacitor
• Right knock sensor 1 (in valley of engine block)
• Shield
• To spark plugs
• W11/3 (front center of eng)

3.2L, Engine Performance Wiring Diagram, Wagon (1 of 3) for Mercedes-Benz E320 4Matic 2003

List of elements for 3.2L, Engine Performance Wiring Diagram, Wagon (1 of 3) for Mercedes-Benz E320 4Matic 2003:

• Computer data lines system
• Cooling fans system
• Data link connector (in fuse & relay box)
• Diagnostic
• Engine control module (me-sfi) (in control module box)
• Hot at all times
• Left oxygen sensor 1 (before twc) (on exhaust pipe, at left of engine)
• Left oxygen sensor 2 (after twc) (under vehicle, on exhaust pipe)
• Module (obdii) generic scan tool connector (under left side of dash)
• Nca
• Passenger fuse & relay module box (right rear of engine compt)
• Pedal value sensor (left rear of engine compt)
• Purge control valve (left front of engine compt)
• Red
• Right oxygen sensor 1 (before twc) (on exhaust pipe, at right of engine)
• Right oxygen sensor 2 (after twc) (under vehicle, on exhaust pipe)
• Starting/charging system
• W16/6 (forward of control module box)

3.2L, Engine Performance Wiring Diagram, Wagon (2 of 3) for Mercedes-Benz E320 4Matic 2003

List of elements for 3.2L, Engine Performance Wiring Diagram, Wagon (2 of 3) for Mercedes-Benz E320 4Matic 2003:

• (sedan & limo) w18 (under driver's seat)
• (top front of engine) air pump switchover valve
• (under air filter housing) egr pressure transducer
• (under driver's seat) w18
• (under front passenger seat) (station wagon) w19
• (under rear of intake manifold) shifting induction pipe switchover valve
• Activated charcoal canister shut-off valve (under car, at right rear wheelwell)
• Air pump relay module
• Camshaft hall-effect sensor (left front of engine)
• Ckp sensor (left side of engine)
• Electric air pump (front of engine)
• Fuel pump (under left rear of vehicle)
• Fuel pump relay module (in control module box)
• Fuel tank pressure sensor (in rear of trunk)
• Fuse 15a
• Fuse 25a
• Fuse 40a
• Hot at all times
• Hot film maf sensor (right side of engine)
• Hot in run or start
• Kickdown switch (under accelerator pedal)
• Passenger fuse & relay module box (right rear of engine compt)
• Pnk
• Rear fuse box (under right rear seat)
• Throttle valve control element (under intake manifold)
• W11/3 (top of cyl head, between cyl 6 & 7)

3.2L, Engine Performance Wiring Diagram, Wagon (3 of 3) for Mercedes-Benz E320 4Matic 2003

List of elements for 3.2L, Engine Performance Wiring Diagram, Wagon (3 of 3) for Mercedes-Benz E320 4Matic 2003:

• (left rear of engine compt) pressure sensor
• (right side of engine) oil sensor
• (top front of engine) ect sensor
• Electrolytic capacitor (at front passenger footwell)
• Engine control module (me-sfi) (in control module box)
• Fuel injectors
• Fuse 15a
• Fuse 20a
• Hot in run or start
• Ign coil
• Ign coil coil
• Left knock sensor 2 (top center of left cyl bank)
• Passenger side fuse & relay module box (right rear of engine compt)
• Pnk
• Right knock sensor 1 (top center of right cyl bank)
• Shield
• To spark plugs
• W11/3 (top of left cyl head, between cyl 6 & 7)