Location of ME-SFI fuel injection and ignition control system components on the engine
B2/6 - Left air flow meter; B2/7 - Right air flow meter; B17/5 - Left inlet air temperature sensor; B17/6 - Right inlet air temperature sensor; L5/4 - Left crankshaft position sensor; L5/5 - Right crankshaft position sensor; Y32 - Air supply pump shut-off valve
Location of ME-SFI fuel injection and ignition control system components on the engine
B6/2 - Left camshaft speed sensor; B6/3 - Right camshaft speed sensor; B11/9 - Left coolant temperature sensor; B11/10 - Right coolant temperature sensor; B28/1 - Left pressure sensor (only shipped to the USA); B28/2 - Right pressure sensor (only shipped to the USA); Y33 - Air supply pump electromagnetic clutch; Y49/1 - Left solenoid valve for adjusting the valve timing; Y49/2 - Right solenoid valve for adjusting the valve timing
Location of ME-SFI fuel injection and ignition control system components on the engine
A29g1 - Left knock sensor 1; A29g2 - Left knock sensor 2; A30g1 - Right knock sensor 1; A30g2 - Right knock sensor 2; T1/1 - T1/12 - Ignition coils; Y63 - Left injectors (LH-SFI); Y64 - Right injectors (LH-SFI)
Location of the ME-SFI fuel injection and ignition control system components in the engine compartment
F23/1 - Control unit; K17, K27 - Relay; N3/11 - Left Engine Control Module (ME-SFI); N3/12 - Right engine control unit (ME-SFI); N16/1 - Main control unit
Location of the ME-SFI fuel injection and ignition control system components in the engine compartment
77 - Adsorber of the gasoline vapor recovery system; B4/3 - Fuel tank pressure sensor (only shipped to the USA); B24/7 - Acceleration sensor (only until 05/96); X11/4 - Diagnostic connector (38-pin); Y58/2 - Left purge valve for the fuel vapor recovery system canister; Y58/3 - Right purge valve for the fuel vapor recovery system canister; YS8/4 - Evaporative emission control system canister shut-off valve
Location of the ME-SFI fuel injection and ignition control system components in the engine compartment
G3/3 - Left pre-catalytic lambda probe; G3/4 - Right pre-catalytic lambda probe; G3/5 - Left post-catalytic lambda probe (uS models only); G3/6 - Right post-catalytic lambda probe (uS models only)
ME-SFI Fuel Injection and Ignition Control System Component Locations
A1e19 - Catalytic converter overheating warning light; A1e26-Signal lamp "Check engine"; B16/4 - Left exhaust gas temperature sensor (only shipped to the USA); 816/5 - Right exhaust gas temperature sensor (only shipped to the USA); X11/22 - Diagnostic connector (only shipped to the USA)
ME-SFI Fuel Injection and Ignition Control System Component Locations
A1e43 - EPC system indicator light (up to 05/96); B37 - Accelerator pedal position sensor; F23/1 - Control unit box; M16/3 - Right idle drive; M16/4 - Left idle drive; N3/11 - Left engine control unit; N3/12 - Right engine control unit; N15/3 - AT control unit; N16/1 - Main control unit; N47-5 - ESP control unit; S9/1 - Brake light switch; S40 - Ignition switch; X11/4 - Diagnostic connector (38-pin)
[Material taken from a web resource MERCEDESMAN]