P07.61-3371-06
A1 Instrument cluster
A1e26 "CHECK ENGINE" MIL
B2/5 Hot film mass air flow sensor
B6/1 Camshaft Hall sensor
B11/4 Coolant temperature sensor
G2 Alternator
K40/1kC Fuel pump 2 relay
K40/1kE Starter relay
K40/1kK Fuel pump 1 relay
L8 Crankshaft rpm sensor
M1 Starter
M3/3 Fuel pump with fuel level sensor
M16/6 Throttle valve actuator
N3/10 Motor electronics control unit
S2/1 Ignition/starter switch
T1/1 Cylinder 1 ignition coil
T1/2 Cylinder 2 ignition coil
T1/3 Cylinder 3 ignition coil
T1/4 Cylinder 4 ignition coil
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Y62/1 Cylinder 1 fuel injection valve
Y62/2 Cylinder 2 fuel injection valve
Y62/3 Cylinder 3 fuel injection valve
Y62/4 Cylinder 4 fuel injection valve
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Function sequence
The start function is activated by turning the transmitter key from position 2 (tml. 15 On) to position 3 (tml. 50 On) in the ignition/starter switch.
Function
The following sub-functions are active:
Motor electronics (ME-SFI) ignition system
- The static high-voltage is distributed without an ignition distributor straight to the spark plugs
Starter control
- The starter is actuated directly via the starter relay
Cylinder-sequential port injection
- Injection takes place via the fuel injection valves directly upstream of the respective intake valve
Start quantity control
- During the start procedure, additional fuel must be injected in relation to the coolant temperature
Fuel pump actuation
- The fuel pump provides sufficient fuel in all operating conditions
Synchronization of the injection and firing order
- Synchronization is required to actuate the ignition coils and the fuel injection valves
During the hot start phase, vapor locks are prevented in the fuel system by actuation of the pressure regulator valve (Y74). A defective pressure regulator valve can lead to a poor hot starting behavior.
Motor electronics (ME) ignition system, function | |||
Starter control, function | |||
ME-SFI fuel injection system, function | |||
ME-SFI start quantity control function | |||
ME-SFI fuel pump actuation, function | |||
ME-SFI synchronization of fuel injection and firing order, function | |||
Pressure regulator valve, component description | Y74 |
Referenced documents
- gf0705p6020ff Pressure regulator valve, component description
- gf0761p3008ff Motor electronics (ME) ignition system, function
- gf0761p3009ff ME-SFI fuel injection system, function
- gf0761p3010ff ME-SFI start quantity control, function
- gf0761p3012ff ME-SFI fuel pump actuation, function
- gf0761p4009ff ME-SFI synchronization of fuel injection and firing order, function
- gf1530p3000ff Starter control, function