Intake air temperature correction function - GF07.61-P-4028F
ENGINE 104.941 /943 /944 /991 /994as of 1.8.96
ENGINE 104.995 with CODE (494a) USA version with CODE (807) Model year 1997 with CODE (808) Model year 1998 with CODE (498) as of Model year 97 Japanese version
ENGINE 111.921 /942 as of 1.9.98, 111.943, 111.944 as of 1.8.96, 111.946 as of 1.6.98, 111.947 /973, 111.975 as of 1.8.96
ENGINE 111.945 in MODEL 208.335/435 as of 1.6.98, 202.020 /080 as of 1.9.98
ENGINE 111.974 with CODE (494a) USA version with CODE (807) Model year 1997 with CODE (808) Model year 1998
ENGINE 112.910 /911 /912 /913 /914 /916 /917 /920 /921 /922 /923 /940 /941 /942 /943 /944 /946 /947 /949 /953 /954 /955 /970 /972 /973 /975
ENGINE 113.940 /941 /942 /943 /948 /960 /961 /963 /965 /966 /967 /968 /969
ENGINE 119.980 /981 /982 /985
ENGINE 120.982/ 983
ENGINE 137.970
Shown on Engine 119
Task
Reducing the thermal stresses on the engine at high temperatures.
Design/function
The ignition timing point is retarded by the ME-SFI control unit in line with the intake air temperature (charge air temperature in the case of supercharged engines) and "load" (engine speed and air mass).
The ignition timing point is retarded only if the engine is operating at a high load and begins from an intake air temperature of approx. +35 °C and reaches its maximum at approx. +65 °C.
Example for full load:
35 °C → (retarded 3.5° crank angle)
45 °C → retarded 6.3° crank angle
65 °C → (retarded 9.5° crank angle)
The following information is processed in the ME-SFI control unit:
- Intake air temperature (charge air temperature in supercharged engines)
- Engine speed/crankshaft position/ignition circuit detection
- Throttle valve position
- Air mass (boost pressure in supercharged engines).
| Motor electronics control unit, location/task/design/function | other than engine 111 EVO | GF07.61-P-5000F | |
| Engine 111 EVO | GF07.61-P-5000GS | ||
| Intake air temperature sensor, location/task/design/function | GF07.04-P-2100F | ||
| Crankshaft position sensor, location/task/design/function | GF07.04-P-4116F | ||
| Electronic accelerator/cruise control/idle speed control actuator location/task/design/function | GF30.22-P-4010F | ||
| Throttle valve actuator, location/task/design/function | Engine 111 EVO | GF30.22-P-4101GS | |
| Hot film mass air flow sensor, location/task/design/function | Engine 104, 112, 113, 137 | GF07.07-P-4118G | |
| Engine 111 (except engine 111 EVO) | |||
| Engine 111 EVO | GF07.07-P-4118GS | ||
| Engine 119, 120 (round connector) | GF07.07-P-4118E | ||
| ME-SFI synchronizing fuel injection and firing order function | GF07.61-P-4009F | ||
| ME-SFI ignition system function | other than engine 111 EVO | GF15.12-P-0001F | |
| Engine 111 EVO | GF15.12-P-0001GS | ||
| ECI ignition system function | Engine 137 | GF15.15-P-3000L |