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Discussion Starter · #1 ·
Anyone else have their low fuel light come on after a few minutes with a full tank? Won't seem to shut off after it came on appropriately with low fuel and filled the tank.

It's off on start up but comes back on after a minute. Is there a reset? Pull main fuse?
 

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Warning! Fat people are harder to kidnap.
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1,373 Posts
Can't help with that. When my light comes on I know I need 3 gallons NOW! :D Later,
 
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Discussion Starter · #3 ·
Anyone know (or check your shop manual) how to do the diagnostic code check using the odometer/trip button and "run" switch process?
 
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Discussion Starter · #4 ·
Anyone know (or check your shop manual) how to do the diagnostic code check using the odometer/trip button and "run" switch process?

Found this on HD talking forum (credit due)

These will also work on the 07 & 08 bikes. There are additional codes for the 08 bikes not listed here but are listed in this same section in another post.

These apply to 04 and later bikes with the serial bus.

The IM (instrument module) is capable of displaying DTC's (diagnostic trouble codes).
Speedometer Self Diagnostics: The speedometer is capable of displaying and clearing speedometer, tachometer, TSM/TSSM and ICM/ECM Diagnostic Trouble Codes (DTC).

1- Turn Ignition switch to OFF & Run/Stop switch is to Run.

2- Push odometer reset button in & hold.

3- Turn ignition switch to Ignition and release odometer reset button. Background lighting should illuminate, speedometer needle should sweep its full range and indicator lamps (battery, security, low fuel, check engine and cruise) should illuminate. The word “diag” should then appear.

4 - Push the odometer reset button once and you will see the selection menu "PSSPt" with the first P flashing.

5 - Each letter represents an area of the diagnostics module. The module that is flashing is the one you are going to check. To move from one letter (module) to the next, you push the odometer reset button one time. (from P to S to SP to t and back to P, etc.)
P = ECM/ICM (Electronic Control Module [EFI] / Ignition Control Module [Carbureted)
S = TSM/TSSM (Turn Signal/ Turn Signal Security Module)
SP = speedometer
T = tachometer

6 - To get the DTC within an area of diagnostics, push and hold the odometer reset button in for 5 seconds and release. If there are any DTC’s the code will be displayed or the word “none” will appear if there are no DTC’s. Push the odometer reset button again to view additional codes if they exist.

7 - Record the codes.

8 - If DTC’s are not to be cleared, Press and release the odometer reset button. Part number of module will be displayed.
NOTE: To determine if a code is current or historic, clear the displayed code by pushing in and holding the odometer reset button ( longer than 5 seconds) until 'clear' comes up. Release the odometer reset button. Turn OFF the ignition switch. Run your bike and shut it down then recheck the DTC’s again by repeating steps 1 to 9. If the code is current it will reappear.

9 – Press and release the odometer reset button to continue to the next module.

10 – Turn Ignition switch to OFF.

On models not equipped with a tachometer "No Rsp" will appear when the tachometer identifier is selected.

"No Rsp" will also appear if the run/off switch is in the off position when doing this procedure.

Also if the code set is a historic code (not a constant light) after 50 start and run cycles of at least 30 seconds each in duration, the light will extinguish itself as long as the error hasn't occurred again.
If it were a current code, the light would remain lit while running.

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DTC FAULT CONDITION MODULE

"BUS Er" Serial data bus shorted/low/open/high
B0563 Battery Voltage High TSM/TSSM
B1004 Fuel Level Sending Unit Low Instruments
B1005 Fuel Level Sending Unit High/Open Instruments
B1006 Accessory Line Over voltage Instruments
B1007 Ignition Line Over voltage Instruments
B1008 Reset Switch Closed Instruments
B1122 Right turn output fault
B1125 (HFSM) Left Turn Output Short to Battery.
B1131 Alarm Output Low TSM/TSSM
B1132 Alarm Output High TSM/TSSM
B1134 Starter Output High TSM/TSSM
B1135 Accelerometer Fault TSM/TSSM
B1141 Ignition switch open/low
B1151 Sidecar BAS Low TSM/TSSM
B1152 Sidecar BAS High TSM/TSSM
B1153 Sidecar BAS Out of Range TSM/TSSM
P0106 MAP Sensor Rate of Range Error Carb
P0107 Map Sensor Failed Open/Low Carb
P0107 Map Sensor Open/Low EFI
P0108 Map Sensor Failed High Carb
P0108 Map Sensor High EFI
P0112 IAT Sensor Voltage Low EFI
P0113 IAT Sensor Voltage Open/High EFI
P0117 ET Sensor Voltage Low EFI
P0118 ET Sensor Voltage Open/High EFI
P0122 TP Sensor Open/Low EFI
P0123 TP Sensor High EFI
P0131 Front 02 sensor low (lean)
P0132 Engine running rich
P0134 Front 02 sensor open/not responding
P0151 Rear 02 sensor low (lean)
P0152 Rear 02 sensor high (rich)
P0154 Rear 02 sensor open/not responding
P0261 Front Injector Open/Low EFI
P0262 Front Injector High EFI
P0263 Rear Injector Open/Low EFI
P0264 Rear Injector High EFI
P0373 CKP Sensor Intermittent Carb
P0373 CKP Sensor Intermittent EFI
P0374 CKP Sensor Not Detected Carb
P0374 CKP Sensor Sync Error EFI
P0501 VSS Low Carb
P0501 VSS Low EFI
P0502 VSS High/Open Carb
P0502 VSS High/Open EFI
P0505 Loss of Idle Speed Control EFI
P0562 Battery Voltage Low Carb
P0562 Battery Voltage Low EFI
P0563 Battery Voltage High Carb
P0563 Battery Voltage High EFI
P0602 Calibration Memory Error Carb
P0603 EEPROM Failure Carb
P0603 ECM EEPROM Error EFI
P0604 RAM Failure Carb
P0605 Program Memory Error Carb
P0605 ECM Flash Error EFI
P0607 Converter Error Carb
P0661 Intake solenoid low/open
P0662 Intake solenoid high/shorted
P1001 System Relay Coil Open/Low EFI
P1002 System relay Coil High/Shorted EFI
P1003 System relay Contacts Open EFI
P1004 System Relay Contacts Closed EFI
P1009 Incorrect Password Carb
P1009 Incorrect Password EFI
P1010 Missing Password Carb
P1010 Missing Password EFI
P1351 Front Ignition Open/Low Carb
P1351 Front Ignition Open/Low EFI
P1352 Front Ignition Coil High/Shorted Carb
P1352 Front Ignition Coil High/Shorted EFI
P1353 Front Cylinder No Combustion EFI
P1354 Rear Ignition Coil Open/Low Carb
P1354 Rear Ignition Coil Open/Low EFI
P1355 Rear Ignition Coil High/Shorted Carb
P1355 Rear Ignition Coil High/Shorted EFI
P1356 Rear Cylinder No Combustion EFI
P1357 Intermittent Secondary Front EFI
P1358 Intermittent Secondary Rear EFI
U1016 Loss of ICM/ECM Serial Data Instruments
U1016 Loss of ECM Serial Data, Vehicle Speed, Vehicle Inhibit Motion or Power train Security Status TSM/TSSM
U1064 Loss of TSM/TSSM Serial Data Carb
U1064 Loss of TSM/TSSM Serial Data EFI
U1064 Loss of TSM/TSSM Serial Data Instruments
U1097 Loss of Speedometer Serial data Carb
U1097 Loss of Speedometer Serial data EFI
U1097 Loss of Speedometer Serial data TSM/TSSM
U1255 Missing Message at Speedometer EFI
U1255 Serial Data Error/Missing Message EFI
U1255 Serial Data Error/Missing Message Instruments
U1255 Serial Data Error/Missing Message TSM/TSSM
U1300 Serial Data Low Carb
U1300 Serial Data Low EFI
U1300 Serial Data Low Instruments
U1300 Serial Data Low TSM/TSSM.
U1301 Serial Data Open/High Carb
U1301 Serial Data Open/High EFI
U1301 Serial Data Open/High Instruments
U1301 Serial Data Open/High TSM/TSSM


2006 models with 02 sensors (Dynas)

P0131 Front 02 sensor lean for any length of time
P0151 Rear 02 sensor lean for any length of time
Above codes can also be set if 02 sensor fails.


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AFR – Air Fuel Ratio

ATS – Air Temperature Sensor

BAS – Bank Angle Sensor

CCM – Cruise Control Module

CKP – Crank Position Sensor. The CKP generates an “AC signal” which is sent to the ECM where it is used to reference engine position (TDC) and speed. Home position established by taking readings off the 22 teeth on the alternator rotor.

DTC – Diagnostic Trouble Codes

ECM – Electronic Control Module. (The Computer) Computes the spark advance for proper ignition timing and fuel control based on sensor inputs (from CKP, MAP & TP sensors) and controls the low-voltage circuits for the ignition coils and injectors. The dwell time for the ignition coil is also calculated in the microprocessor and is dependent upon battery voltage. The programmed dwell feature gives adequate spark at all speeds.

ECT – Engine Coolant Temperature. Sensor also controls the cooling fan relay that provides 12 Vdc to the fans.

EFI – Electronic Fuel Injection

EFP – Electronic Fuel Pump

ET – Engine Temperature sensor

FI – Fuel Injectors

FPR – Fuel Pressure regulator

IAC – Idle Air Control actuator

IAT – Intake Air Temperature sensor

ISS – Ion Sensing System…detonation detection

MAP – manifold Absolute Pressure sensor. The MAP sensor monitors the intake manifold pressure (vacuum) and sends the information to the ECM. The EMC then adjusts the spark and fuel-timing advance curves for optimum performance.

TP – Throttle Position Sensor

TSM/TSSM (Turn Signal/ Turn Signal Security Module)

VE – Volume Efficiency

VSS – Vehicle Speed Sensor. Used as an input for idle speed control

Updated 1/1/08
 
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Discussion Starter · #5 ·
maybe we should move your last post somewhere else?

to your fuel light. maybe the fuel sensor is jammed or something. I don't know what system they use...but it works

I just ran out of fuel this morning on the way to work LOL...had to push the bike for 300meters only...
 
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Discussion Starter · #6 ·
I found it while looking for a way to diagnose the low fuel warning light on the tach.

It is a great self help tool and should be a "sticky" for anyone with any of those dozens of potential problems...

Mine showed front and rear lean codes for the O2 sensors due to the xieds but nothing else...
 

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Premium Member
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18,659 Posts
My light tends to come on when i have around a gallon left, too early in my opinion for a bike with only a 3.5 gallon tank. I think I am going to adjust the float so that it comes on at a half gallon. I did this to my Street Glide.
 
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Discussion Starter · #8 ·
My light tends to come on when i have around a gallon left, too early in my opinion for a bike with only a 3.5 gallon tank. I think I am going to adjust the float so that it comes on at a half gallon. I did this to my Street Glide.

How do you adjust the float. My comes on (used to come on) with one gallon left too. Perhaps playing with that float will jog mine right. How do you adjust it?
 

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Premium Member
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18,659 Posts
How do you adjust the float. My comes on (used to come on) with one gallon left too. Perhaps playing with that float will jog mine right. How do you adjust it?
I haven't tried this one yet, but on my Street Glide, I pulled out the float assembly and mildly bent the arm until it swung just a little lower therby not coming on until it was lower on gas.
 

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Premium Member
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14,912 Posts
maybe we should move your last post somewhere else?

to your fuel light. maybe the fuel sensor is jammed or something. I don't know what system they use...but it works

I just ran out of fuel this morning on the way to work LOL...had to push the bike for 300meters only...
Ha ha.....hope it wasn't up:devil:hill.....
 
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Discussion Starter · #11 ·
Low fuel warning light turns on

Low fuel warning light turns on after 1-5 miles every time and stays on eventhough tank is near full.

Started and stopped bike a dozen times and over 100 miles or so to cycle the low fuel light off to no avail. Opened gas tank (putting cap on still a PIA) and filled tank back up. Pulled main fuse to reset things? It works on the clock...

Any other thoughts?
 
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Discussion Starter · #13 ·
Warranty repair I guess. Ironically it first went off on the way home from my 1000 service.
 

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It aint no good locking the doors, when the madnes
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7,311 Posts
Warranty repair I guess. Ironically it first went off on the way home from my 1000 service.
No surprise there then....dont you just love Harley dealers, its like a barrel full of drunken chimps are allowed to play with your bike for an hour! :1eye:
 
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Discussion Starter · #15 ·
No surprise there then....dont you just love Harley dealers, its like a barrel full of drunken chimps are allowed to play with your bike for an hour! :1eye:
check the connector from the fuel pump/ sender unit. It is under the left side cover. just follow the cables from under the tank on the left side...

I hate it...I mean them...they never made anything on my bike to my full satisfaction. They always screwed something up....they even forgot my bike once for a whole day although I had an appointment lol...
 
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Discussion Starter · #16 ·
check the connector from the fuel pump/ sender unit. It is under the left side cover. just follow the cables from under the tank on the left side...

I hate it...I mean them...they never made anything on my bike to my full satisfaction. They always screwed something up....they even forgot my bike once for a whole day although I had an appointment lol...

Benny K,

Does it have anything to do with the grey box with a white button on the left side and a black rubber plug on the right side under the main fuse? It was loose if it was that connector and I could not find anything else loose, fyi.

I'll run it later to check, thanx.
 

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Metal cannot think, therefore it cannot be held re
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821 Posts
Does it have anything to do with the grey box with a white button on the left side and a black rubber plug on the right side under the main fuse? It was loose if it was that connector and I could not find anything else loose, fyi.
The plug you are referring to is the datalink connector. The white "button" is actually a plug to seal a redundant hole, and the black rubber is used to seal off the connections when it is not in use.
The datalink is used when servicing the bike and allows the HD Digital Technician computer to interrogate the ECM. It is also used for tuning when using SEST, TTS, Directlink, etc.
 

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Its good to have friends
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Does anyone know what the fix for this is? Mine comes on sometimes just after I got fuel and goes off and on. I would rather fix it myself rather than go back to the dealer. If it is the sending unit, is that an expensive item? Can it be diagnosed electronically? Thanks......cheers
 

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Necessity is the Mother of INVENTION,,,,Fear is re
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6,669 Posts
When my light comes on I will go for fuel. It will stay on for about 5-7 miles before it goes off once full. Had it back to the dealer with 200 miles on it they checked the systems and said it was within normal tolerances. Go figure
 

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Winger on an XR
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95 Posts
Mine comes on like it's supposed to and after I fill the tank, it stays on for 20-30 miles and then goes off. Then it stays off until the tank gets low and comes on again. I just figured it was a little quirk in the system and I always go by the odometer anyway.
 
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