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Discussion Starter · #1 ·
Well I'm new to Harley and this site so I hope to learn what I can to keep this great looking bike on the road.
As title says I see a dead short on left side of accssry fuse but if I unplug random connections it goes back to a 1500 ohm ground. NO turns, No Horn, No Brake Lt. Is the trouble.
I cannot find the turn sig module?? If it has one. The manual references one idk. I have opened up the front of batwing, but have not removed tank. I have gone one plug at a time to isolate, but the short comes back once I turn the key on and 12v is sent to acc fuse load side.

HELP !!
 

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Discussion Starter · #2 ·
I thought I may have pinched a wire when replacing the grips. But when I found the blown fuse in accessory slot, it was a 30 amp so this was likely a problem long before I purchased.
 

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Have you checked the codes on your display for anything yet? I copied this from another site as I am not this well prepared normally.

2007 Harley Davidson Diagnostic Trouble Codes
(from Service Manual 99497-07)


Getting Codes:

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.

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

DTC FAULT CONDITION MODULE

“BUS Er” (TSM/HFSM) Serial Data 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 Overvoltage (Instruments)
B1007 Ignition Line Overvoltage (Instruments)
B1008 Reset Switch Closed (Instruments)
B1121 Turn Signal Will Not Flash (HFSM)
B1122 Right Turn Signal Open (TSM)
B1123 Left Turn Signal Short-to-Ground (HFSM)
B1124 Right Turn Signal Short-to-Ground (HFSM)
B1125 Left Turn Signal Short-to-Voltage (HFSM)
B1126 Right Turn Signal Short-to-Voltage (HFSM)
B1134 Starter Output High ((TSM/TSSM)
B1135 Accelerometer Fault ((TSM/TSSM)
B1136 Accelerometer Tip-Over Self Test (HFSM)
B1141 Ignition Switch Open/Low (HFSM) ONLY
B1141 Turn signals Will Not Flash (TSM) ONLY
B1142 Internal Fault (HFSM)
B1143 Security Antenna Short-to-Ground (HFSM)
B1144 Security Antenna Short-to-Battery (HFSM)
B1145 Security Antenna Open (HFSM)
B1151 Sidecar BAS Low ((TSM/TSSM)
B1152 Sidecar BAS High ((TSM/TSSM)
B1153 Sidecar BAS Out of Range ((TSM/TSSM)
B1154 Clutch Switch Short-to-Ground (TSM/HFSM)
B1155 Neutral Switch Short-to-Ground (TSMHFSM)
B2006 Radio Switches Shorted/Stuck (Audio)
B2007 Handlebar (Audio) Switch Shorted High(Audio)
Handlebar Mode Switch Shorted High(Audio)
Handlebar PTT/Squelch Switch Shorted High(Audio)
B2008 Handlebar (Audio) Switch Shorted Low(Audio)
Handlebar Mode Switch Shorted Low(Audio)
Handlebar PTT/Squelch Switch Shorted Low(Audio)
B2009 Handlebar (Audio) Switch Stuck or Open(Audio)
Handlebar Mode Switch Stuck or Open(Audio)
Handlebar PTT/Squelch Switch Stuck or Open(Audio)
B2010 Passenger (Audio)/PTT Switch Shorted High(Audio)
Passenger Mode Switch Shorted High(Audio)
B2011 Passenger (Audio)/PTT Switch Shorted Low(Audio)
Passenger Mode Switch Shorted Low(Audio)
B2012 Passenger (Audio)/PTT Switch Shorted Stuck or Open(Audio)
Passenger Mode Switch Shorted Stuck or Open(Audio)
B2013 Sidecar Switches Shorted High(Audio)
B2014 Sidecar Switches Shorted Low(Audio)

B2015 Sidecar Switches Shorted Stuck or Open(Audio)
B2016 Front Speakers Shorted(Audio)
B2017 Front Speakers Open(Audio)
B2018 Front Speakers Shorted to Ground(Audio)
B2019 Front Speakers Shorted to Battery(Audio)
B2020 Rear Speakers Shorted(Audio)
B2021 Rear Speakers Open(Audio)
B2022 Rear Speakers Shorted to Ground(Audio)
B2023 Rear Speakers Shorted to Battery(Audio)
B2024 Sidecar Speakers Shorted(Audio)
B2025 Sidecar Speakers Open(Audio)
B2026 Sidecar Speakers Shorted to Ground(Audio)
B2027 Sidecar Speakers Shorted to Battery(Audio)
P0107 Map Sensor Open/Low (EFI)
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 O2 Sensor Low (EFI)
P0132 Front O2 Sensor High (EFI)
P0134 Front O2 Sensor Open/Not Responding (EFI)
P0151 Rear O2 Sensor Low (EFI)
P0152 Rear O2 Sensor High (EFI)
P0154 Rear O2 Sensor Open/Not Responding (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 (EFI)
P0374 CKP Sensor Synch Error (EFI)
P0501 VSS Low (EFI)
P0502 VSS High/Open (EFI)
P0505 Loss of Idle Sped Control (EFI)
P0562 Battery Voltage Low (EFI)
P0563 Battery Voltage High (EFI)
P0603 ECM EEPROM Error (EFI)
P0605 ECM Flash Error (EFI)
P0661 Active Intake Solenoid Open (EFI)
P0662 Active Intake High/Shorted (EFI)
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 (EFI)
P1010 Missing Password (EFI)
P1351 Front Ignition Open/Low (EFI)
P1352 Front Ignition Coil High/Shorted (EFI)
P1353 Front Cylinder No Combustion (EFI)
P1354 Rear Ignition Coil Open/Low (EFI)
P1355 Rear Ignition Coil High/Shorted (EFI)
P1356 Rear Cylinder No Combustion (EFI)
P1357 Intermittent Secondary Front (EFI)
P1358 Intermittent Secondary Rear (EFI)
P1475 Exhaust Actuator Position Error (EFI)
P1477 Exhaust Actuator Open/Low (EFI)
P1478 Exhaust Actuator Shorted (EFI)
U1016 Loss of ICM/ECM Serial Data (Instruments)
U1016 Loss of Serial Data(Audio)
U1016 Loss of ECM Serial Data (TSM/HFSM))
U1064 Loss of (TSM/TSSM) Serial Data (EFI)
U1064 Loss of (TSM/TSSM/HFSM) Serial Data (Instruments)
U1097 Loss of Speedometer Serial data (EFI)
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/HSFM)
U1300 Serial Data Low (EFI)
U1300 Serial Data Low (Instruments)
U1300, U1301 Stalls, then Starts(Audio)
U1300 Serial Data Low (TSM/HFSM)
U1301 Serial Data Open/High (EFI)
U1301 Serial Data Open/High (Instruments)
U1301 Serial Data Open/High (TSM/TSSM)
U1302 Infotainment BUS Shorted Low/High(Audio)
U1306 Infotainment BUS Lost Communications with Hands free Phone Module(Audio)
U1307 Infotainment BUS Lost Communications with CB Module(Audio)
U1313 Infotainment BUS Lost Communications with XM Module(Audio)
U1314 Infotainment BUS Lost Communications with Navigation Module(Audio)
U1317 Infotainment BUS Lost Communications with High Output Amplifier(Audio)


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)

TSM/TSSM/HFSM Turn Signal/Turn Signal Security Module/Hands Free Security Module

VE – Volume Efficiency

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

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Discussion Starter · #6 ·
Ok that was easier than I thought. But I don't think it's going to help. The codes are likely from unplugging the radio and the security antenna mod when testing yesterday.
U1016 serial data loss (likely radio unplugged)
b1145. security ant.

I cleared them and ran the bike for 5 min nothing came back.

idk
 

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Discussion Starter · #8 ·
lol out of fuses, about to head to Orielly.
Ohm meter didn't show short tho, only the 1500ohm ground. That's w swch on or off. I'm sure it will blow once whtvr is faulty gets the 12v. Then blow the fuse.
 

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I wouldn't waste anymore fuses. Find which items on the accy. circuit aren't working now, like what ever worked before that doesn't now with a blown fuse plugged into the fuse block. Then unplug connectors one at a time until that 1500 ohm measurement goes away. Actually don't use a blown fuse just connect your meter into the fuse sockets so you'll see when the 1500 ohms is gone by the last circuit unplugged, that's the smokin' wire circuit ! Just remember that those are 30 amp fuses blowing and that could damage your meter. Most meters are designed to test up to 10 amps (current).
 
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Discussion Starter · #10 ·
It wouldn't matter what fuse I put in, when I put it all back normal with req 15a fuse, the dead short comes back and would pop it or a 30. I believe it only requires a 15 tho. The PO put a 30 in there at some point.
I'll test more later today thanks!
 

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It wouldn't matter what fuse I put in, when I put it all back normal with req 15a fuse, the dead short comes back and would pop it or a 30. I believe it only requires a 15 tho. The PO put a 30 in there at some point.
I'll test more later today thanks!
Using ohm's law with the 1500 Ω measurement you're getting and a 13 volt battery and 30 amp fuse. I = V ÷ R , 115 amps is blowing that fuse. With a 12 volt battery that fuse is seeing 125 amps ! 100 amps if using the 15 amp fuse. Follow the smoke trail !
 
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I'd say it's possible you could have some wiring with melted insulation that's shorting causing the high current drain.
 
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Schmidty: 13 volts across 1500 ohm =.008 amps.

OP:
You are way overcomplicating this, you have a short to ground, forget about trouble codes etc.

Forget about the ohmmeter, it is not the way to find a short.

You need to find a damaged wire that is touching ground.

Unplug the connector for the harness that goes to the rear fender, see if the fuse blows (leave all others connected).
 

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Discussion Starter · #14 ·
I have a funeral to attend today so may be tmrw before getting back to working this out.

I have isolated several connections such as the radio and the rear lights conn under seat. At times the 1500 ground will go away until Ign turned back on. The radio fuse has a 2200 ohm grn on the load side. It isn't blowing the fuse but will change the ohm readings at times.

Because the reading on meter change depending on what I isolate, but then come back with ign back on, I believe it's a component short not a wire shirt to grn. A wire shirt to grn would be constant
 

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Put the ohmmeter away, you are way over complicating and overthinking this, an ohmmeter is not a tool for finding a short to ground, because you have no idea what each branch should read.

The way to find a short is to isolate each branch harness by disconnecting one at a time from the main harness, the most common place that shorts occur in the accessory circuit is the harness under the rear fender.
 
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Discussion Starter · #16 ·
So I got back to this today and the ground on the accsy fuse is from the tail/turn light asmly where each light plugs into the distribution connector. I still need to narrow it down some more. I see a short between the blue and black wire that pwr the tail/brake pigtail. And that's without the bulb pigtail connected.
At this point I really need a wiring diagram.
 

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So I got back to this today and the ground on the accsy fuse is from the tail/turn light asmly where each light plugs into the distribution connector. I still need to narrow it down some more. I see a short between the blue and black wire that pwr the tail/brake pigtail. And that's without the bulb pigtail connected.
At this point I really need a wiring diagram.
Wiring diagrams at the Harley website, go into the owner's section and input your bike info.
 
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Discussion Starter · #18 ·
Shmiidty should the rear fender light panel (what all the connections plug into) show a short to ground (black wire) from the blue-brake light terminal? This is isolated from main harness under seat and all bulb connections unplugged.
I kno many components read ground when run thru relays and the like when circuit is off, but I don't think this distribution rail should do this.
 

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The blue wire is the running light, it is power for all running lights front and rear.
 

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Once again, keep it simple...

Unplug the connector for the harness that runs to the tail lights.

See if the fuse still blows (don`t use a 30A fuse).

Using an ohmmeter is an iffy way to find a short, especially if you are not working with a wiring diagram.
 
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