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techtalk:evo:engctl03 [2019/08/13 16:00]
ixl2relax [Oil Pressure Switch]
techtalk:evo:engctl03 [2019/11/14 16:48] (current)
ixl2relax [Low Fuel Sensor]
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 ===== Electronic Fuel Injection System (EFI) ===== ===== Electronic Fuel Injection System (EFI) =====
 +==== Sub Documents ====
 +  * [[techtalk:​evo:​engctl03a|Cleaning Fuel Injectors]]
  
 The Electronic Fuel Injection (EFI) system was introduced on the Sportster models in 2007. It was modified and upgraded in 2014. The Electronic Fuel Injection (EFI) system was introduced on the Sportster models in 2007. It was modified and upgraded in 2014.
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 See this [[http://​xlforum.net/​forums/​showthread.php?​t=1928519|__XLForum Thread__]]. See this [[http://​xlforum.net/​forums/​showthread.php?​t=1928519|__XLForum Thread__]].
  
-**NOTE:** The CKP P/N for 2004-2005 models is currently 32804-04B (long cable). The CKP P/N for 2006-2017+ models is currently 32707-01C (short cable), which is also used on some BT models.+**NOTE1:** The CKP P/N for 2004-2005 models is currently 32804-04B (long cable). The CKP P/N for 2006-2017+ models is currently 32707-01C (short cable), which is also used on some BT models.
  
-With the CKP DTCs being a recurring issue, it would be a good idea to open & clean the CKP to main harness connector located beneath the frame. Put dielectric grease in the connector to help keep out grit & grime, then reconnect it. It may be getting excessive contamination due to its location.((thanks sportsterpaul - http://​xlforum.net/​forums/​showpost.php?​p=5603008&​postcount=128))+**NOTE2:​** ​With the CKP DTCs being a recurring issue, it would be a good idea to open & clean the CKP to main harness connector located beneath the frame. Put dielectric grease in the connector to help keep out grit & grime, then reconnect it. It may be getting excessive contamination due to its location.((thanks sportsterpaul - http://​xlforum.net/​forums/​showpost.php?​p=5603008&​postcount=128))
  
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 {{:​common:​space100x5px.jpg?​175|}}<​font 20px/​inherit;;​inherit;;​inherit>​**Reference Picture showing Sensor Locations.**</​font>​ {{:​common:​space100x5px.jpg?​175|}}<​font 20px/​inherit;;​inherit;;​inherit>​**Reference Picture showing Sensor Locations.**</​font>​
-{{:​techtalk:​evo:​engctl:​2014-efi-manifold-inductionsensors-xkreedx.jpg|}}((photo by xkreedx of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​threadid=2059564))+{{:​techtalk:​evo:​engctl:​2014-efi-manifold-inductionsensors-xkreedx.jpg|}}((photo by xkreedx of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​threadid=2059564))((Annotated by IXL2Relax at the XLForum))
  
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 ==== Jiffy Stand Switch (HDI only) ==== ==== Jiffy Stand Switch (HDI only) ====
  
-The Jiffy Stand Sensor (JSS) utilizes a 3-wire Hall effect sensor to monitor ​jiffy stand position. The ECM provides a +5v supply ​(along with a ground) ​to the JSS and a return line to the ECM provides the status of the stand.+Starting in 2008, the International models have a Jiffy Stand Sensor (JSS) which utilizes a 3-wire Hall effect sensor to monitor ​the position ​(up or down). The ECM provides a +5v supply to the JSS and a return line to the ECM provides the status of the stand. The sensor is grounded to the Powertrain Ground Point. The domestic models have the same wiring, but no sensor is implemented.
  
 When the jiffy stand is fully retracted the sensor picks up the presence of the metal tab mounted to the jiffy stand (providing less than 2v on the signal line). The metal tab is moved away from the sensor as the jiffy stand is extended (providing 4v or more on the signal line). When the jiffy stand is fully retracted the sensor picks up the presence of the metal tab mounted to the jiffy stand (providing less than 2v on the signal line). The metal tab is moved away from the sensor as the jiffy stand is extended (providing 4v or more on the signal line).
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 When the jiffy stand is extended, the engine will start and run only if the TSM/TSSM senses the transmission is in neutral. Otherwise, the engine will start and then simply stall. When the jiffy stand is extended, the engine will start and run only if the TSM/TSSM senses the transmission is in neutral. Otherwise, the engine will start and then simply stall.
  
-The jiffy stand sensor also has a 'Fail Enable'​ mode. This mode allows the engine to start and run if the system recognizes a problem with the jiffy stand sensor circuit. If a problem exists +The jiffy stand sensor also has a 'Fail Enable'​ mode. This mode allows the engine to start and run if the system recognizes a problem with the jiffy stand sensor circuit. If a problem exists or if the transmission is put in gear with the jiffy stand extended the odometer will display "SIdE Stand"​. 
-or if the transmission is put in gear with the jiffy stand extended the odometer will display "SIdE Stand"​.+ 
 +(Here is an [[http://​xlforum.net/​forums/​showthread.php?​t=1879945|XLForum THREAD]] that discusses an intermittent issue which causes the bike to stop running and may not produce any DTC.) 
  
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 ==== Fuel Pump Operation ==== ==== Fuel Pump Operation ====
  
-The fuel pump delivers fuel, under pressure, to the injectors. The pressure regulator, internally mounted on the fuel filter, controls the amount of pressure in the system. Excess fuel flow is bypassed from the pump assembly back into the fuel tank through the pressure regulator.+Starting in 2007 (EFI), the Sportsters use an electric fuel pump. The fuel pump delivers fuel, under pressure, to the injectors. The pressure regulator, internally mounted on the fuel filter, controls the amount of pressure in the system. Excess fuel flow is bypassed from the pump assembly back into the fuel tank through the pressure regulator.
  
 The fuel pump delivers fuel through the fuel line, to a cavity in the induction module, known as the Fuel Rail. The Fuel Rail directs the fuel to the fuel injectors. The fuel pump delivers fuel through the fuel line, to a cavity in the induction module, known as the Fuel Rail. The Fuel Rail directs the fuel to the fuel injectors.
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 The speedometer sends power to the Fuel Sender Resistor Assy (thru a pull up resistor) while monitoring the same line for a change in voltage level. When the fuel is above the Low Level, the resistor assembly presents a 10K resistance above ground, thus keeping the supplied voltage at a high level. When the fuel reaches the Low Level, the switch in the fuel pump assembly closes it's contacts and effectively shorts across the 8K resistor portion of the Fuel Sender Resistor Assy. There remains the 2K resistor to limit current draw, but the effect is to lower the voltage on the output line to a level which the speedometer interprets as a Low Fuel Level condition. The speedometer sends power to the Fuel Sender Resistor Assy (thru a pull up resistor) while monitoring the same line for a change in voltage level. When the fuel is above the Low Level, the resistor assembly presents a 10K resistance above ground, thus keeping the supplied voltage at a high level. When the fuel reaches the Low Level, the switch in the fuel pump assembly closes it's contacts and effectively shorts across the 8K resistor portion of the Fuel Sender Resistor Assy. There remains the 2K resistor to limit current draw, but the effect is to lower the voltage on the output line to a level which the speedometer interprets as a Low Fuel Level condition.
 +
 +The amount of fuel remaining (2013 models) when the Low Fuel Light activates will vary by model:\\
 +**{{:​common:​space100x5px.jpg|}}.65 gallons remaining for XL1200X & XL1200V\\
 +{{:​common:​space100x5px.jpg|}}.80 gallons remaining for XL883R & XL883N\\
 +{{:​common:​space100x5px.jpg|}}1.0 gallons remaining for XL883L & XL1200C/​CP/​CA/​CB\\**
  
 The following illustration is a functional schematic of this sensor/​indicator operation. The following illustration is a functional schematic of this sensor/​indicator operation.