ENGINE PERFORMANCE – Mercedes-Benz ML350 2003 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

3.7L

3.7L, Engine Performance Wiring Diagram (1 of 3) for Mercedes-Benz ML350 2003

List of elements for 3.7L, Engine Performance Wiring Diagram (1 of 3) for Mercedes-Benz ML350 2003:

• (left side of engine compt) fuse & relay box
• A11
• B10
• C/b
• C/e
• Check engine indicator
• Computer data lines system
• Data link connector (dtc readout) (below left side of dash)
• Engine control module (me-sfi) (left side of engine compt, in e box)
• Fuse 15a
• Hot at all times
• Instrument cluster
• Left oxygen sensor 1 (before twc) (in exhaust pipe)
• Left oxygen sensor 2 (after twc) (in exhaust pipe)
• Low engine oil indicator
• Nca
• P/b
• P/d
• Pedal value sensor (left rear corner of engine compt)
• Pnk
• Purge control valve (left rear corner of engine compt)
• Red
• Right front footwell fuse & relay box
• Right oxygen sensor 1 (before twc) (in exhaust pipe)
• Right oxygen sensor 2 (after twc) (in exhaust pipe)
• Starting/charging system
• W16 (left rear corner of eng compt)

3.7L, Engine Performance Wiring Diagram (2 of 3) for Mercedes-Benz ML350 2003

List of elements for 3.7L, Engine Performance Wiring Diagram (2 of 3) for Mercedes-Benz ML350 2003:

• (right front of engine) air pump switchover valve
• (top center front of engine) shifting induction pipe switchover valve
• (top rear of engine) egr switchover valve
• Activated charcoal canister shut-off valve (under rear of vehicle, above spare wheel)
• Battery
• C/d
• Camshaft hall-effect sensor (right front of engine)
• Crankshaft position sensor (left rear of engine)
• Electric air pump (center front of engine)
• Fuel pump
• Fuel pump relay
• Fuel pump with fuel level sensor (top of fuel tank)
• Fuel tank pressure sensor (behind trim on fuel filler pipe)
• Fuse & relay box (left side of engine compt)
• Fuse 15a
• Fuse 20a
• Fuse 40a
• Hot at all times
• Hot film maf sensor (right rear of engine compt)
• Hot in run or start
• Kickdown switch (below accelerator pedal)
• M/a
• Mr/c
• Mr/d
• Mr/e
• P/d
• P/e
• Pnk
• Red
• Right front footwell fuse & relay box
• Secondary air injection pump relay
• Throttle valve actuator (rear of intake manifold)
• W11/3 (front of engine)
• W29/2 (right kick panel)
• W6 (left rear cargo area)

3.7L, Engine Performance Wiring Diagram (3 of 3) for Mercedes-Benz ML350 2003

List of elements for 3.7L, Engine Performance Wiring Diagram (3 of 3) for Mercedes-Benz ML350 2003:

• (center front of engine) ect sensor
• (front center of engine) w11/3
• (lower right front of engine) oil sensor
• (right front of engine) pressure sensor
• Engine control module (me-sfi) (left side of engine compt, in e box)
• Fuel injectors
• Fuse & relay box (left side of engine compt)
• Fuse 15a
• Hot in run or start
• Ign coil
• Ign coil coil
• Left knock sensor 2 (left side of engine)
• M/a
• M/c
• Noise sup- pressors
• Pnk
• Red
• Right knock sensor 1 (right side of engine)
• Shield
• To spark plugs