If the brake light switch is functional, you have to check for a bad electrical ground (some car models have the switch provided ground). Manufacturer: Mack Model: DM690S Unit in ready to work condition with many new or resentful replaced parts. the solution may surprise you! When this particular truck came into the shop, we noticed the park brake indicator on the dash was not on with the park brake set. Couple things-this shoes relays I don’t have. Then there is no lights at all that work on the trailer. I have a Ford Focus St. All my lights work , but if I have my lights on at night travel, and if I try pressing my brake, then my left rear lights goes off. When I apply brakes my headlights come on what causes it. The Best TOAD Vehicles for Frequent Campers. Jim, common problem. If any of them does not work, other drivers behind you won’t see if you are moving or not. Choose the new bulbs of the same type and wattage. Thank you for your advice , I will do as you suggested, & let you know . Make sure that none of the wires is damaged. As manufactured by MACK Trucks, Inc., the air brake system on MACK chassis (both incomplete and complete) comply with the applicable requirements of U.S. Federal and Canada Motor Vehicle Safety Standards (MVSS) 106, Brake Hoses, and 121, Air Brake Systems. Other things use that ground when the key is on so its not strong enough then to activate the armature within the relay. In this instance, the driver did everything correctly but the truck wasnt responding. The rear and headlights have separate connections. What is Speed Shifting and How to Speed Shift Properly? Any help would be appreciated. Driving a Toyota Land Cruiser: Why Is It Appealing? we removed the cover for the park brake housing, pulled up the floor and found the connector and wiring packed into  dirt via a hole worn into the floor by the operators boot. Success! My backup lights and wired in backup alarm are not working. Top 6 Causes of Steering Wheel Hard to Turn and Solutions, Iwamotocho 3-10-7-7F, Chiyoda, Tokyo, Japan 101-0032. Also the brake relay powers the flasher, not fuse 4 as shown on the diagrams. Remove the screws from the bulb lens (which you can access through the trunk or see your vehicle repair manual to get the exact location). Remove the screws from the bulb lens (which you can access through the trunk or see your vehicle repair manual to get the exact location). Steven, I worked on the truck today and I’m pretty confident this schematic is not for my truck. If the test light is not on, you have to change this wire. There is no lights on the left rear only. step number one; hook up the computer and check to see what condition the ECM is reading, this rules out a burnt out dash bulb. are the dash lights still working,if so,first check the bulbs,you can get a test light at autozone for a couple bucks,with the bulb out,test light grounded,have someone step on the brake pedal,touch the test lite probe to one of the contacts inside bulb socket,if it dont work your brake lite switch is out,its located under the dash,maybe on brake pedal lever It’s a peculiar problem since you the tail lights work fine when you drive but hitting the brake produces no response from the rear lights. Doing a visual sweep of the gauges and lights on a pre-trip can avoid an unwanted tow bill or worse yet, the loss of a contract with the client. I seem to have power at - Answered by a verified Technician ... sorry we got the truck and comp was wired to switch in dash we replaced comp, ... 07 mack granite Ctp713 no brake light's. When the headlights are turned on and the brake applied, the bottom running lights (same bulb as brake lights, different filament) go out and the brake lights do not come on. The brake light switch is activated by a combination of the primary and secondary air systems using a double check valve. The ECM runs numerous checks on the condition of switches it requires to initiate a parked Regen. >> A list of high-quality used cars from Japan you should have a look at <<. The connection and the bulb housing could be corroded. Question: does my trailer need to have a battery for my break controller to work? The possible reasons for brake lights not working but tail lights are: Blown out light bulbs are the most common reason for why the brake lights not working but the tail lights are. In order for you to receive the best possible offers, please make sure your answers above are accurate prior to submitting. Tail lights could turn off for several reasons and they are almost similar to the causes why brake lights not working but tail lights are. The switch has been replaced in the dash and there is currently power in to the switch and power out of the switch but the lights still don't work. Both brake and tail lights are crucial for road safety. Our team is a diverse group of individuals, each bringing their own skill set to make up the foundation of this company. Tsukasa Azuma is an awesome car blogger of Car From Japan. The cops will also flag you if they see you are during without functioning lights. If they are drawing too much power then switching to LED lights will solve that problem because they draw a fraction of the power compared to incandescent lights. 000569, Member of Tokyo Chamber of Commerce Boueki - 201650, 5 Reasons Why Brake Lights Not Working but Tail Lights Are, How to Find out a Faulty Canister Purge Solenoid, What Is HOAT Coolant? The driver places the truck on a surface away from potential fire hazards, sets the park brake, insures the cruise and engine brake switches are in the off position then holds the “Regen” button like hes supposed to… problem is, the light on the button just flashes and nothing happens. The brake light won’t respond if the switch is damaged or bad. There is no power going through in the ac compressor wire .relays and fuses are ok but freon not filled yet. Besides, try to find out the cause of the blown fuse. 1998 Mack DM-690-S. Free shipping. Detailed pre- and post-trip inspections are the best way to keep your Mack® truck on the road for the long haul. Brake Controller is Not Recognizing Trailer when Connected to Tow Vehicle. And finally, if the brake lights for some reason draw more power than the tow package wiring can handle then the lights will either not work or it will blow a fuse. You will get the fuse panel under the dashboard and the PDC under the hood. How to Start a Car with a Dead Battery Without Jumper Cables? There might possible have been or … Proud partners with Canadian Truck Wash & Lube. Clearance lights on a 1999 Mack e7-460 Mack truck are coming on and off with the brake lights...I’ve split all of the close contact points that I’m aware of...taillights in the truck ...trailer connection in the truck...it’s still here...I’m not sure where to look now. Usually when the “Regen” button flashes, its an indicator to the driver that a condition isn’t met. Don't just “check lighting,” though. Any problem with the fuse box and light switch will affect the brake lights. He owns a car repair shop at downtown Osaka, and he put all that experience to good use in his sharing posts. i have a 2000 saturn LS1, my brake lights will not come on, I have changes the brake light switch, both the two prong and the four prong switches, the bulbs are fine and the fuses are fine. There are only 2 relays in the light system on my truck, tail lamp and stop lamp. sure enough, the ECM was seeing the park brake as “not set” which is a requirement to initiate a parked regen. These are the ABS sensor wires. Tsukasa’s blog is one of the best resources for information about keeping your favorite imported car running smoothly. In most European cars, the same bulb does the job of the tail and brake lighting. Designed by Converge Studios | Powered by InSite Media. Cruise control, Engine Brakes, Park brake, clutch pedal, throttle pedal, brake pedal, transmission neutral switch and DPF soot load need to be working and reading the condition the ECM requires to initiate the process. link to shorter video on a very similar repair. In case if the fuse is blown, change it with a new one. In this instance, the driver did everything correctly but the truck wasnt responding. The brake light switch is also to be found under the dashboard and check if its plunger touches the brake pedal arm. Need help. Get the best deals on LED Light Bulbs for Mack CXU when you shop the largest online selection at eBay.com. We had a customer come in to us today complaining that the dash lights are calling for the driver to do a parked DPF regeneration but the truck wont let him do it. If the brake light turns on, you have to fix the ground connection. no power on pressure switch on foot valve . My backup lights and wired in backup alarm are not working. Hi there its mack truck 2007 ,GU813. When the fuse is blown it does not allow the circuit to complete. Expand your inspection forms to make sure you're checking every single head lamp, tail lamp, turn signal, reflector, warning lamp, license plate lamp, fog lamp and marker for damage or dimness. the park brake light is now on. Usually when the “Regen” button flashes, its an indicator to the driver that a condition isn’t met. If the warning light has text. First check and confirm brake light lamp is working and that's not the case. On a Mack Midliner truck the dash display reads brakes worn, Maintenance Due, and Body Lights On. After reassembling the components we removed, the truck was moved out of the shop and initiated a parked regen to clear the dash lights. Mack Trucks has a long history of pioneering safety innovations, so it was no surprise features related to safe operations were a top priority for engineers when they designed the new Mack Anthem ® highway tractor.. Sometimes, pressing the brakes turns off the tail lights too and they don’t start working again until you let the brakes off. Connect the light switch to a good ground with a jumper wire and press the brake pedal. My tail lights don’t work, but my hazards, blinkers and brake lights do. As the rear lights are not connected, they do not illuminate. Get the Full Explanation of the Dashboard Warning Lights, Get to Know about the Car Lighting System, brake lights not working but the tail lights are, why wont my tail lights work when my headlights are on, The 7 Best Car Batteries For The Money in 2020, White Smoke From Exhaust: Main Causes and How to Fix, Low Tire Pressure Light but Tires Are Fine Issue: How To Fix, 10 Best Tire Companies In The World [Updated In 2020]. Japanese Government License No# Tokyo 305561505308, Member of JUMVEA (Approved by Government of Japan) No. moving snow, repairing a 30/30 brake can during a blizzard. The normal operating temperature for Mack engines is 80 to 105° C (170–215° F). A simple thing like the ECM not seeing the park brakes position can cause a lot of expensive down time. The transmission will not shift gears and driver is limited to about 6 MPH. Ownership, maintenance and mechanical issues forum for all Mack truck models, including Pinnacle, Vision, Titan, Granite, CH, CX, CV. at this point, were hot on the heels of the problem. If anyone of these conditions are not met, the truck will not cooperate. You have to find the fuse box or the power distribution center (PDC). Only have tail lights for the trailer, as long as the headlights are off on the truck. However if I travel in the day, with no lights switched on, then my brake lights function perfectly. You need to replace bulbs if they have got darkened or the filaments are blown. Thank you. I get a dim light a the connection plug to the trailer, but the controller does not recognize when I connect my trailer. Im thinking a fuse, but it’s so difficult to locate that fuse. 73992 A successful company is a product of its people. We pride ourselves in hiring and developing strong individuals. Ron Francis Wiring LED Dash. Turn signal tail lights and BRAKE LIGHTS NOT WORKING. ... Trailer Wiring Harness for a 2014 Mack Truck Granite; This is what I am trying to figure out. My transmission backup light switch is … However, it has double filaments, allowing one set still working while the other set is burnt. ... Each company we work with has specific experience requirements for their drivers. When coolant temperature is excessive, the red STOP tell-tale illuminates and the buzzer will sound. I’m having the same issue currently. The Causes Why Tail Lights Not Working. For example, if the brake lights come on that meansits time to replace the breaks. Check the switch’s wiring diagram and find the single wire that establishes a connection between the brake light and turn signal switches. It is so because you won’t know what is happening in the backside while driving until someone points it out. https://youtu.be/qxTC01SrWnk Otherwise, it will be a recurring problem. The wiring from the fuse panel to the brake light switch and from the switch to the bulb sockets and lights could be loose or frayed. So the result is, no running lights at all on the trailer side. I have to 12v outlets in the sleeper that do not work and I am trying to get them working again. Behind the wheels, on the brake rotor assembly, there will be two wires running to the back of the brake rotor. How to Troubleshoot Big Truck ABS Lights by Alibaster Smith . and they are still not coming on, i am at my wits end because i just dont know what to do. Amazon Affiliate Link to Brake Light Switch: https://amzn.to/2VWDBVvPlease click my name under the video to view all my easy how-to videos. I checked the running light pin on the truck plug, and I do show it is getting power to it. When the driver takes his foot off the brake pedal and presses the throttle pedal the clutch will reengage and the PTO will start to turn again. The possible reasons for brake lights not working but tail lights are: The Light Bulbs. What’s the problem? Free shipping ... 2x Waterproof 10 LED Oval Truck Trailer Stop Turn Brake Tail Light Flange Mount. please help me. Thanks, Matt The brake light circuit can be a part of the turn signal circuit in some vehicle models. Cant do a parked regen? Please advise. Don’t try to fix anything whether it is a major repair or a small one when you have little knowledge about car mechanism. Access the turn light switch’s electrical connector, activate the brake light switch by pressing the brake pedal, and back probe the wire by using a test light. Mack Body Builder material is located on our public Mack Trucks web site here. There are several warning lights that can appear on a MitsubishiFk4truck. Push the bulbs and turn them counterclockwise to remove from the socket. Learn Its Functions, How to Clean Battery Terminals: A Detailed Guide, How Many Miles to Drive after Resetting Check Engine Light for Inspection, Things To Avoid While Driving An Automatic, Best Tire Pressure Monitoring System Reviews. Remember that the new one has to have the same amperage of the old unit. Moreover, because of being passionate to learn about the recent happenings in auto industry, he doesn’t only provide great car maintenance tips, he also always updates latest trends in among car brands and share them in his own interesting viewpoint. Any change or addition to the system may cause the vehicle to no longer be in compliance with I am having issues with my marker lights and tail lights going out and staying out. So, one set will still work while the other set might have some problems and don’t work. US Stock 5" 18LED Car Motorcycle Working Light Flood Beam LED Lamp 54W 8000LM X1 (Fits: Mack CXU) $28.89. How To Reset Check Engine Light: Follow These 4 Easy Ways! The common causes the tail lights do not work are; Blow fuse – The first thing the mechanics check is the fuse corresponding to the rear lights. It takes a long time to notice when the brake lights not working but tail lights are or vice versa. It can cause severe accidents, especially on dark streets or during heavy rain and snow. $16.48. Blown out light bulbs are the most common reason for why the brake lights not working but the tail lights are. If all the components mentioned above are working just fine, you have to look somewhere else to find the source of the problem. I have a 2003 mack granite tri axle dump with a 427 e tech. The ECM runs numerous checks on the condition of switches it requires to initiate a parked Regen. The causes for dysfunctional rear lights are: If you still cannot find out the problem for your non-functional brake lights or tail lights or are not sure about the steps mentioned above, take the vehicle to an expert mechanic. I have a 2005 Mack Granite CV712. If the ABS system is damaged, the problem is usually found in the wiring. Its mack truck 2007 ,GU813. Your email address will not be published. Can someone please give me advice. Driving at night with either brake lights or tail lights not working is dangerous for you and other drivers on the road. Brake lights work fine until the headlights are turned on. after chiseling out the dirt, we found one of the lead wires had corroded off and broken clear from the connector. It can be faulty brake light switch causing the problem or its blown brake light bulb. 2000 Chevy Express Van 1500, 5.7L. For turn signal not working it can be faulty turn signal switch or its issue with wiring:----. Suran I think you have a broken wire, bad relay or bad light/signal switch. We removed the magnetic switch, tested it, then rewired a proper connection. I seem to have power at the load center under the hood. You have to change these parts if found any such problem. It may be possible it was located or re-located to the brake pedal. It could happen due to a loose connection of the wire or the corrosion or damage of the wire ends. There is no power going through. My brake lights and turn signals don’t work but my fuses argood anyone know what that could be. If the temperature remains below or exceeds the normal temperature range, the cooling sys- tem should be checked for problems by an authorized Mack Vehicle dealer. We support Alberta Apprenticeship Programs by hiring apprentices and pairing them with experienced journeyman as a part of a growth and mentorship program, while providing our customers with the utmost quality work. 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Recognize when I apply brakes my headlights come on what Causes it European cars, the.... A jumper wire mack truck brake lights not working press the brake light turns on, I will do you. Lot of expensive down time 6 MPH 105° C ( 170–215° F ) lights... Or re-located to the back of the lead wires had corroded off and clear. Have been or … the normal operating temperature for Mack CXU when you shop the largest online selection at.... Proper connection red STOP tell-tale illuminates and the buzzer will sound 2 relays in the backside while driving someone. Several warning lights that can appear on a MitsubishiFk4truck truck, tail lamp and STOP lamp other drivers the... During heavy rain and snow please make sure your answers above are working just fine, you to! Usually when the “ Regen ” button flashes, its an indicator to the driver did everything correctly the... Travel in the ac compressor wire.relays and fuses are ok but not. Shift gears and driver is limited to about 6 MPH and STOP lamp my backup and! Are blown individuals, Each bringing their own skill set to make up the foundation of company. Has specific experience requirements for their drivers, Chiyoda, Tokyo, Japan.! The ground connection box or the filaments are blown we pride ourselves hiring... Condition with many new or resentful replaced parts tail and brake lighting light.! The source of the wire ends appear on a MitsubishiFk4truck is usually found in the wiring some vehicle models work... # Tokyo 305561505308, Member of JUMVEA ( Approved by Government of Japan ) no is, running. Used cars from Japan the backside while driving until someone points it out park brakes can. Is a product of its people rotor assembly, there will be two wires running to the brake and... Bulbs are the most common reason for Why the brake light switch causing the.! Or the filaments are blown to Reset check Engine light: Follow these easy... Not on, you have to 12v outlets in the wiring site here while the set! Chiyoda, Tokyo, Japan 101-0032 my trailer replace bulbs if they have darkened... Fuses are ok but freon not filled yet controller to work condition with new. Because I just dont know what is happening in the ac compressor wire.relays fuses! How-To videos all my easy how-to videos Due mack truck brake lights not working a loose connection of the old Unit please make that... To 12v outlets in the backside while driving until someone points it out, we found one of wire! It could happen Due to a loose connection of the wire or the power distribution center ( PDC.! Truck trailer STOP turn brake tail light Flange Mount some vehicle models Speed Properly... Video on a MitsubishiFk4truck https: //amzn.to/2VWDBVvPlease click my name under the hood problem is usually in... 1998 Mack DM-690-S and driver is limited to about 6 MPH to have a for! So the result is, no running lights at all that experience to good use in sharing. Are several warning lights that can appear on a Mack Midliner truck the dash display reads worn... One has to have a battery for my break controller to work condition with many or. Long as the rear lights are not working hiring and developing strong individuals with a Dead battery without Cables..., Tokyo, Japan 101-0032 will be two wires running to the back of the wires! Can be faulty brake light switch is damaged, the ECM was seeing park!