Dodge

Dodge Repair Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Dodge
This answer was rated:

2001 Dodge Ram 1500 V6 My turn signals and brake lights have

2001 Dodge Ram 1500 V6: My...
2001 Dodge Ram 1500 V6:
My turn signals and brake lights have recently stopped working. The turn signals simply stopped over the weekend between turning the ignition off to starting it up again 10 minutes later. If I lift or lower the turn signal lever it will lock in place but the usual clicking noise is gone as well as the flashers, in dash and external.

I do not know how long the brake lights have been out since a friendly fellow commuter informed me that they were out today. I checked all the fuses and the bulbs and none are blown. I see a blue module with TBB89 in the fuse box but I am not sure what that is for.

Any insight or part suggestions would be much appreciated!
Show More
Show Less
Ask Your Own Dodge Question
Answered in 6 minutes by:
9/10/2009
Randall C
Randall C, ASE Master Technician
Category: Dodge
Satisfied Customers: 13,128
Experience: ASE Master Tech, 32 years Diag/Electrical Specialist
Verified

Hello, most likely you have a bad flasher module. It is possible to affect brake lights as well. I would replace flasher unit per instructions below

 

COMBINATION FLASHER
The combination flasher is located in the Junction Block (JB) behind the fuse access panel on the left outboard end of the instrument panel. The combination flasher is a smart relay that functions as both the turn signal system and the hazard warning system flasher. The combination flasher contains active electronic Integrated Circuitry (IC) elements. This flasher is designed to handle the current flow requirements of the factory-installed lighting. If supplemental lighting is added to the turn signal lamp circuits, such as when towing a trailer with lights, the combination flasher will automatically try to compensate to keep the flash rate the same.

The combination flasher has five blade-type terminals that connect it to the vehicle electrical system through five matching cavities in the receptacle of the JB. while the combination flasher has a International Standards Organization (ISO) -type relay terminal configuration or footprint, the internal circuitry is much different. The combination flasher does not use standard ISO-relay inputs or provide ISO-relay type outputs or functions. The combination flasher should never be substituted for an ISO-relay or replaced with an ISO-relay, or else component and vehicle damage may occur.

The combination flasher cannot be repaired or adjusted and, if faulty or damaged, it must be replaced.

The combination flasher has five blade-type terminals intended for the following inputs and outputs: fused B(+), fused ignition switch output, ground, turn signal circuit, and hazard warning circuit. Constant battery voltage and ground are supplied to the flasher so that it can perform the hazard warning function, and ignition switched battery voltage is supplied for the turn signal function.

Fig.6 Combination Flasher - Typical

The Integrated Circuitry (IC) within the combination flasher contains the logic that controls the flasher operation and the flash rate. Pin 6 of the IC receives a sense voltage from the hazard warning circuit of the multi-function switch. When the hazard warning switch is turned ON, the "hazard on sense" voltage will become low due to the circuit being grounded through the turn signal bulbs. This low voltage sense signals the IC to energize the flash control Positive-Negative-Positive (PNP) transistor at a pre-calibrated flash rate or frequency. Each time the PNP transistor energizes the hazard warning circuit, the pin 6 "hazard on sense" voltage will become high and the IC signals the PNP transistor to de-energize the circuit. This cycling will continue until the hazard warning switch is turned OFF.

Likewise, pin 8 of the IC receives a sense voltage from the turn signal circuits of the multi-function switch. when the left or right turn signal switch is turned ON, the "turn signal on sense" voltage will become low due to the circuit being grounded through the turn signal bulbs. This low voltage sense signals the IC to energize the flash control PNP transistor at a pre-calibrated flash rate or frequency. Each time the PNP transistor energizes the turn signal circuit, the pin 8 "turn signal on sense" voltage will become high and the IC signals the PNP transistor to de-energize the circuit. This cycling will continue until the right or left turn signal switch is turned OFF.

A special design feature of the combination flasher allows it to "sense" that a turn signal circuit or bulb is not operating, and provide the driver an indication of the condition by flashing the remaining bulbs in the affected circuit at a higher rate (120 flashes-per-minute or higher). Conventional flashers either continue flashing at their typical rate (heavy-duty type), or discontinue flashing the affected circuit entirely (standard-duty type). During turn signal operation, the combination flasher IC compares normal battery voltage input on pin 2 with the shunt resistor voltage input on pin 7. If the IC "senses" that the voltage difference between pin 2 and pin 7 is different than the pre-calibrated value of the IC, it will increase the rate at which it signals the PNP transistor to energize the pin 1 output. Thus, the inoperative half (left or right side) of the turn signal circuit will flash faster.

Because of the active electronic elements within the combination flasher, it cannot be tested with conventional automotive electrical test equipment. If the combination flasher is believed to be faulty, test the turn signal system and hazard warning system. Then replace the combination flasher with a known good unit to confirm system operation. (Refer to LAMPS/LIGHTING - EXTERIOR/TURN SIGNAL & HAZARD WARNING SYSTEM - DIAGNOSIS AND TESTING).

 

  1. Disconnect and isolate the battery negative cable.
  2. Remove the fuse access panel by unsnapping it from the left outboard end of the instrument panel.

Fig.7 Junction Block

  1. Remove the combination flasher from the Junction Block (JB) .

INSTALLATION

WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

  1. Position the combination flasher in the proper receptacle of the Junction Block (JB).
  2. Align the terminals of the combination flasher with the terminal cavities in the JB receptacle for the flasher.
  3. Push in firmly and evenly on the combination flasher until the terminals are fully seated in the terminal cavities of the JB receptacle for the flasher.
  4. Reinstall the fuse access panel by snapping it onto the left outboard end of the instrument panel.
  5. Reconnect the battery negative cable.

 

Please hit the ACCEPT button if you agree with my answer. Positive feedback and bonus is welcome. Thanks
Ask Your Own Dodge Question
Customer reply replied 8 years ago
Just so I'm sure. The Combo Flasher you're referring to is the cube looking thing that's plugged into the same panel as the rest of the fuses correct?

Yes, larger box item lower left in panel I am pretty sure./

 

 

Please hit the ACCEPT button if you agree with my answer. Positive feedback and bonus is welcome. Thanks

 

Randall C
Randall C, ASE Master Technician
Category: Dodge
Satisfied Customers: 13,128
Experience: ASE Master Tech, 32 years Diag/Electrical Specialist
Verified
Randall C and 87 other Dodge Specialists are ready to help you
Ask your own question now
Customer reply replied 8 years ago
I replaced the flasher module with the one that matches my truck and this did not resolve either problem. Any suggestions on what it may be?
Sorry, electricl problems can be difficult when not there, I need to look at some diagrams. I will get back to you as quick as I can
Ask Your Own Dodge Question
do you happen to have a testlight or voltmeter?
Ask Your Own Dodge Question
Customer reply replied 8 years ago
Not on me. The closest thing I have at home is a telephone buttset. It does have readings for line voltage and alligator clips and vampire taps so it may work. Otherwise I'll have to wait until Monday to pick mine up from the office or borrow Dad's tomorrow.
Ok, I will leave it up to you. Pull the flasher,. turn key on, I will need to know how many termisnals have power OR 12 volts. LMK when you can I will be on/off each day
Ask Your Own Dodge Question
Customer reply replied 8 years ago
What terminals do you mean? I'm not sure where you want me to test voltage at.

Is it safe to pull the flasher module when the battery is connected or should I D/C battery, unplug flasher module, R/C battery, then turn ignition to on?

I'm not familiar with Auto electrical systems. I'm a phone/network engineer so low voltage network and phone as well as residential are basically the extent of my electrical expertise.
Its simple. You do not need to undo battery. Just pull out the flasher and probe all terminals it plugs into with key on. You will not hurt anything
Ask Your Own Dodge Question
Customer reply replied 8 years ago
I'll definitely need a volt meter then. I'll let you know what I find!

Thanks again!
take your time. I am going no where. LMK wjhen you can. thanks
Ask Your Own Dodge Question
Ask Randall C Your Own Question
Randall C
Randall C
Randall C, ASE Master Technician
Category: Dodge
Satisfied Customers: 13,128
13,128 Satisfied Customers
Experience: ASE Master Tech, 32 years Diag/Electrical Specialist

Randall C is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I AM VERY GLAD THAT I TOOK A CHANCE ON YOUR PROBLEM SOLVING SKILLS. I WAS SUCCESSFUL IN REPLACING THE FUEL PUMP. MY TRUCK RUNS LIKE A CLOCK. IT RUNS LIKE THE DAY I BOUGHT IT. NO LUNGING FORWARD, THE TURBO REACTS THE SECOND I STOMP ON THE GAS, AND IT HAS A LOT MORE POWER AND EVEN SOUNDS BETTER TO ME. IT SAVED ABOUT $500.00 BY DOING THE WORK MYSELF. I GIVE YOU ALL THE CREDIT FOR YOUR DIAGNOSING THE PROBLEM, JUST FROM THE SYMPTONS I GAVE YOU OVER THE e MAIL. I WILL USE YOUR WEB SITE AGAIN AND REFER MY FRIENDS. THANKS SO MUCH FOR THE HELP.

TOM WHITTAKERUSA

Just a quick line to tell you how pleased I am to have my brakes working properly after all this time. Your answer was what I needed. I would certainly recommend you highly. God bless!

Rev. Jerry BaysingerHolts Summit, Mo

I recently asked a question about my 2005 dodge ram, and I just wanted to let my Expert know that he hit the nail squarely on the head with his answer. I wanted to thank him again.

GregPittsburgh, PA

Just a quick line to tell you how pleased I am to have my brakes working properly after all this time. Your answer was what I needed. I would certainly recommend you highly. God bless!

JerryHolts Summit, MO

I was skeptical at first but thought I'd give it a try. I was pleasantly surprised. Your site actually is a quality service that I would recommend to others in a heartbeat.

StanSayre, PA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

< Previous | Next >

Meet the Experts:

Jerry

Jerry

Master Mechanic

1,754 satisfied customers

ASE Master tech, 30 years exp. troubleshooter, driveability tech

Chris

Chris

Shop Foreman

6,753 satisfied customers

Dodge/Cummins and Chrysler Certified Master Tech

Mopar Certified

Mopar Certified

Dodge Technician

5,939 satisfied customers

24 Year Chrysler/Dodge Certified Specialist

moparfl

moparfl

ASE Certified Technician

3,292 satisfied customers

ASE Master Tech Gold level Chrysler Status 30 years dealership exp

Dodgerench

Dodgerench

ASE Certified Technician

2,814 satisfied customers

30+ years Dodge/Chrysler exp., ASE Master with L1 certification. Driveability/ combustion specialist

Tim Mohr

Tim Mohr

ASE MASTER TECH

2,322 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

Don - Mo Lurch

Don - Mo Lurch

Aftermarket & Factory Electronics

1,568 satisfied customers

Cert. Dodge & Chrysler Warnty, Heavy Line Mech, Mobile Electronics. Sales, Installation & Repair for 30 years

< Previous | Next >

Related Dodge Questions
I have a 2005 dodge ram 1500, and i need to know what
i have a 2005 dodge ram 1500, and i need to know what transmission is in it. here is my vin. 1D7HU18N65S13333 … read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
1999 Dodge Ram 1500 Brakes. This truck has good brakes as as
1999 Dodge Ram 1500 Brakes. This truck has good brakes as long as you are braking reg. but if you have to jumps on them hard it wont stop. It crystalize the drum shoes roters and pads .Have replaced 3… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
Just tried to help someone jump their car with my RAM 1500
just tried to help someone jump their car with my RAM 1500 ecodiesel and the cables got hooked up backwards. There was a little smoke and I quickly disconnected, but radio, and heated seats/steering w… read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
I just installed a new battery in my 2011 Dodge Ram 1500
I just installed a new battery in my 2011 Dodge Ram 1500 Laramie Longhorn. Put the key in the ignition and everything went dead. It acts like a dead battery but the battery tests out at 12.6 volts.… read more
Mopar Certified
Mopar Certified
Dodge Technician
Vocational, Technical or Trade Scho
5,939 satisfied customers
DODGE RAM 1500 INTERMITTENT TALL. This is a difficult one
DODGE RAM 1500 INTERMITTENT TALL JA: Okay, I'll connect you to the mechanic to discuss this further with you. Before I do, is there anything else you want him to know? Customer: This is a difficult on… read more
Chris
Chris
Shop Foreman
6,753 satisfied customers
Have a 2014 Ram 1500, engine light came on and i am getting
Second opinion] Have a 2014 Ram 1500, engine light came on and i am getting U11E9 and U0140 codes … read more
Chris
Chris
Shop Foreman
6,753 satisfied customers
I have a Dodge Ram 1500 pickup truck overheated put water in
I have a Dodge Ram 1500 pickup truck overheated put water in now it will not start … read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
I was at a stop light with my 2013 ram 1500, and all of
I was at a stop light with my 2013 ram 1500, and all of sudden my wipers came, and my dash instrumentation panel went black. I was able to keep driving, but the wipers would not cut off, made it home,… read more
Robert R
Robert R
Auto Technician
Vocational, Technical or Trade Scho
879 satisfied customers
Ram 1500 diesel truck won't start. i'm getting a anti theft
ram 1500 diesel truck won't start. i'm getting a anti theft code / restart the system last 8 # of vin fs549255 … read more
Chris
Chris
Shop Foreman
6,753 satisfied customers
2007 Dodge Ram 1500 Truck no electrical- ignition or
2007 Dodge Ram 1500 Truck no electrical- ignition or headlights, 16 volts across battery, replaced ignition switch & starter nothing … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,375 satisfied customers
There is no power to the coil. Consistent. 1999 ram 1500
Yes. I've tried another coil, ground and putting power to the wire that connects to the coil and all the fuses … read more
roy
roy
Associate Degree
3 satisfied customers
2005 ram 1500, brake light is out. Full. This is a wiring
Full. This is a wiring issue. Need the tail light wiring diagram. … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,375 satisfied customers
I have 2015 Ram 1500 trying to replace brake light. Only
i have 2015 Ram 1500 trying to replace brake light. Only light I find in module is the 7440 bulb but I need to replace the 3057 one. Where is located and how to I access it? … read more
Mechanic01
Mechanic01
1,645 satisfied customers
Reset anti theft on 14 ram 1500, Undone battery cable,
Reset anti theft on 14 ram 1500 JA: Are you fixing your Ram 1500 yourself? What have you tried so far? Customer: Undone battery cable JA: Have you tested the battery with a voltmeter? And can you see … read more
Don - Mo Lurch
Don - Mo Lurch
Aftermarket & Factory Electronics
Vocational, Technical or Trade Scho
1,568 satisfied customers
2000 dodge truck ram 1500 abs brakes need to bleed brakes.
2000 dodge truck ram 1500 abs brakes need to bleed brakes … read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
98 ram 1500 2wd auto won't crank battery and starter ,seem,
98 ram 1500 2wd auto won't crank battery and starter ,seem … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
Dodge Ram 1500 idles low and says the battery is dead even
Dodge Ram 1500 idles low and says the battery is dead even though it's not. What could be wrong?… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
I have a 13 ram 1500 and disconnected the battery for
I have a 13 ram 1500 and disconnected the battery for maintenance and connected it again and I got an error that says wrong keyfob. I tried both of my fobs and nothing. I cant start it or anything … read more
Robert R
Robert R
Auto Technician
Vocational, Technical or Trade Scho
879 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x