FAQ #169 | |
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Accelerator Sensor - Magneti Marelli 6lpb fuel injection | |
Sensor incorporated in the accelerator pedal (1261) Role of the sensor : To register the driver demand (acceleration, decelaration) To deliver the information to the injection ECU Role of the injection ECU according to the data received : To determine the opening of the motorised butterfly To determine the injection time To determine the ignition advance Description The accelerator pedal sensor provides 2 signals (voltage) . The voltage value of one signal is equivalent to half of the other one . Items of information from the connector channels are constantly compared with each other to detect a possible fault . N.B. : The accelerator pedal sensor does not have a contact . Electrical features Allocation of the connector channels : Channel 1 : Output signal 1 Channel 2 : Earth Channel 3 : Output signal 2 Channel 4 : 5 Volts The accelerator pedal has a point of resistance switch on vehicles fitted with a speed limiter . " a " 4 -way connector . (2) "point of resistance" switch . " b " 2 -way connector . Allocation of the connector channels : "point of resistance" switch : Channel 1 : Accelerator pedal point of resistance signal Channel 2 : Earth Accelerator pedal released : Voltage between earth and channel 1 : 0,3 to 0,6 volt Voltage between earth and channel 3 : 0,15 to 0,3 volt Accelerator pedal pressed fully down : Voltage between earth and channel 1 : 3,5 to 4 volts Voltage between earth and channel 3 : 1,75 to 2 volts |
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Views | 14620 (Unique 2824) |
Member Rating : | 8.0 - 1 vote |
FAQ Posted by | Dave_Retired. |
Info | Created: 22 September 2009 Last Updated: 02 April 2013 |