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What does the check engine light mean?

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  #1  
Old 09-04-2010, 10:49 AM
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Default What does the check engine light mean?

I have a 2005 Heritage softail 88B 5 spd, all stock except stage one.


when I go to start the bike, I turn the ignition switch, the check engine light comes on, then turns off, then I start the bike, THAT IS NORMAL. I understand that.

But then about 2 seconds after it starts, the engine light comes back on for about 4 seconds, then turns off.. Is that normal ?

can I put my bike into " diagnostic mode" or something and read an error code ? and if so, can anyone post a link as to how ?

thanks!
 
  #2  
Old 09-04-2010, 10:55 AM
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I couldn't get the file to attach, so I will paste it in.

I apologize if it looks bad.


Be advised this only applies to the full serial data bikes, ie 04 and
05's

.................................................. .........................

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 sould 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.

--------------------------

DTC FAULT CONDITION MODULE

B0563 Battery Voltage High TSM/TSSM
B1004 Fuel Level Sending Unit Low Instruments
B1005 Fuel Level Sending Unit High/Open Instruments
B1006 Accessory Line Overvoltage Instruments
B1007 Ignition Line Overvoltage Instruments
B1008 Reset Switch Closed Instruments
B1131 Alarm Output Low TSM/TSSM
B1132 Alarm Output High TSM/TSSM
B1134 Starter Output High TSM/TSSM
B1135 Accelerometer Fault TSM/TSSM
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
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 Synch Error EFI
P0501 VSS Low Carb
P0501 VSS Low EFI
P0502 VSS High/Open Carb
P0502 VSS High/Open EFI
P0505 Loss of Idle Sped 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
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 Powertrain 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

-----------------------
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.

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
 
  #3  
Old 09-04-2010, 10:57 AM
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Another note, most often a code will clear itself after 50 on/off cycles.
 
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Old 09-04-2010, 10:59 AM
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Thanks alot, I'll go do this in my garage right now.
 
  #5  
Old 09-04-2010, 11:04 AM
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Somethink as simple as a "kickback" while starting can throw a code.
It will clear itself eventually.
 
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Old 09-04-2010, 11:11 AM
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OK, I got - " front cylinder no combustion" and "rear cylinder no combustion"
what does that mean ? I did run out of gas yesterday on an iron but attempt heading toward fargo. would that trigger it ?

and the other code, when the "t" is flashing is says "no rsp" is that normal ? or do you know what it means ?
 

Last edited by 191185; 09-04-2010 at 11:16 AM. Reason: meant to say "t" not "Pt"
  #7  
Old 09-04-2010, 11:32 AM
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Look down sitting on bike.
 
  #8  
Old 09-04-2010, 11:46 AM
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Originally Posted by pdfiddler
Look down sitting on bike.
what does that mean ? are you implying I look down and notice the bike isn't running ? hence, when it ran out of gas that is what triggered it ?
 
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Old 09-04-2010, 12:11 PM
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Not sure what he meant, but sounds like the "running out of gas" did trigger it.

Like I said earlier, I had a simple "kickback" do it (more than once).
Nothing to worry about.
It'll clear itself after 50 on/off cycles (if you didn't already clear it manually).
 
  #10  
Old 09-04-2010, 12:15 PM
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Originally Posted by 191185
OK, I got - " front cylinder no combustion" and "rear cylinder no combustion"
what does that mean ? I did run out of gas yesterday on an iron but attempt heading toward fargo. would that trigger it ?

and the other code, when the "t" is flashing is says "no rsp" is that normal ? or do you know what it means ?

On models not equipped with a tachometer "No Rsp" will appear when the tachometer identifier (T part of the sequence ) is selected but it shouldn't appear with the selector in the "P" position.
(No rsp = No response)
 


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