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Diagnostic Trouble Code: B1103
Diagnostic Trouble Code Name: SIR Serial Communications Fault
Vehicle Make: Daewoo
Vehicle Model: Tosca (V250)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Please Note: The DTC Information provided has been randomly generated.
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Diagnostic Trouble Code Description:
Fuel Pump Flow Performance
Possible Sensor Faults
Fuel Pump Control Module
Possible Related Diagnostic Trouble Codes
DTC P2635
Circuit / System Description
The engine control module (ECM) supplies voltage to the fuel pump control module when the ECM detects that the ignition is on. The voltage from the ECM to the fuel pump control module remains active for 2?seconds, unless the engine is in crank or run. While this voltage is being received, the fuel pump control module closes the ground switch of the fuel pump and also supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel rail pressure.
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