TIPM Test/Bypass Cables
If your 2007-2014 Dodge, Jeep, Chrysler, or VW vehicle fails to start (acts likes it's out of gas) and/or your fuel pump continues pumping after turning the vehicle off (draining your battery), you likely have a faulty fuel pump relay. Our proprietary TIPM test/bypass cables are a great way to diagnose your TIPM problems by checking the proper operation of your fuel pump and testing your fuel pump relay. Our cables can also bypass a faulty fuel pump relay and keep your vehicle on the road. Please review the capabilities, advantages, and limitions of using these cables. You can build your own using the plans below or buy one that's ready to use for $25-$35. Cables are in stock and ready to ship via USPS Priority Mail (2-3 days) or Priority Express Mail (overnight delivery to most locations).
This design came to life after my 2011 Dodge Durango started to experience starting problems shortly after the warranty expired during the summer of 2014. Through analysis and testing (I'm an engineer), I was able to determine that my TIPM-mounted fuel pump relay was bad and repair it myself. In the process, I created a custom wire assembly (cable) that is capable of testing my fuel pump, fuel pump relay, and bypassing the defective fuel pump relay so I could stay on the road until permanent repairs were made. I felt this wire assembly could be helpful to others, so I decided to release my design for anyone to build their own. After a single post on a Dodge forum, I was quickly inundated with phone calls and orders for this cable assembly. I now build TIPM cables with countless emails from happy customers keeping me going. No special skills are required to use this cable and you can diagnose your problem in less than 5 minutes. After your purchase, if you decide to upgrade to a TIPM repair as a long-term solution, we'll credit the full cost of our TIPM test/bypass cable when you return it along with your TIPM.
How To Buy One
Order below with any credit card or Paypal, call us at 304-933-9391, or buy one on Ebay (search for "TIPM Cable"). We offer two versions of our TIPM test/bypass cable as well as a kit if you'd like to build your own. If you only want to have your vehicle operating again, we sell a "simple" test/bypass cable without the test LED or ground wire. It pulls power from one fuse and delivers it to the fuel pump circuit (bypass mode). It can also test your fuel pump, if desired.
Our "standard" test/bypass cable adds a LED and the capability to test your fuel pump relay output. It's our most popular cable. LED feedback is nice when troubleshooting a bad fuel pump relay because you can see if/when it is providing power to your fuel pump. The LED acts just like a test light by lighting up when 12 VDC passes through it.
If you're a do-it-yourselfer and having difficulty locating add-a-circuit cables that can accommodate 20 amps, we sell a kit that will allow you to build your own simple TIPM bypass/test cable. You can crimp both add-a-circuit cables together or solder them (preferred). This kit consists of the following items:
- Two (2) 20 amp add-a-circuit cable assemblies, 5" long
- Four (4) 20 amp yellow automotive fuses
- One (1) piece of black heat shrink
|Cable Version||Fuel Pump Test||Fuel Pump Relay Test||Bypass Mode||Buy This Cable If:|
|Simple (No Feedback LED)||Yes||No||Yes||You just want your car to work again|
|Standard (Includes LED and Ground Wire)||Yes||Yes||Yes||You want your car to work again and know why it failed|
|Build Your Own (Kit)||Yes||No||Yes||You'd like to solder/crimp your own add-a-circuit cables and save money to create a simple cable|
Shipping is $7 for USPS Priority Mail (normally 2-3 business days) or $23 for USPS Priority Express Mail (normally 1 business day, but occasionally 2 days) in the continental USA only. Canada shipping is $8 (7-10 days via USPS 1st Class Mail) or $27 (5-8 days via USPS Priority Mail). Visit the USPS website and enter 26330 as the originating zipcode to calculate delivery time to your location. After you click the "Buy Now" button and login or create a Paypal account, you can select from multiple shipping methods. Contact us for shipments outside the USA and Canada. We ship within 24 hours and you'll receive a Paypal tracking link via email. Detailed hard copy instructions are included with each cable assembly. Be sure to read the capabilities, advantages, and limitations of these cables. If you've already let your dealer install an external relay by cutting wires under your TIPM, this cable will not work.
Cables are IN STOCK and READY TO SHIP. Orders are normally shipped the SAME DAY. We ship Monday through Friday and most Saturdays. We offer a full refund if our cable does not work on the applicable (tested) vehicles shown below in green. If Paypal does not offer you multiple shipping options, login/create a Paypal account or contact us via email or telephone.
- Checks the TIPM-mounted fuel pump relay for proper functionality with feedback provided via a Light Emitting Diode (LED). This is effective if your vehicle fails to start due to a defective fuel pump relay or the battery drains due to a fuel pump relay that is stuck in the closed position. Green LED feedback can be used as evidence for Dodge warranty claims against a defective fuel pump relay.
- Checks fuel pump functionality. Dodge service departments may claim that you have a bad fuel pump when the TIPM is really the problem. My testing/bypass device will often narrow down your problem to the TIPM fuel pump relay. With the vehicle turned off, our device permits the fuel pump to be powered on (with green LED feedback) and you'll be able to hear it pumping.
- Bypasses a bad fuel pump relay, allowing most vehicles that will not start to operate again. It works for vehicles that won't start (fuel pump relay won't engage) or those that power the fuel pump when the vehicle is off (fuel pump stuck on). This arrangement is a temporary solution, due to the limitations listed below, until you are able to implement a permanent fix.
- Can be used to drain the fuel tank by powering the fuel pump while the vehicle is turned off. This capability is useful if improper fuel was dispensed into the tank or fuel tank modifications are needed.
- These cables work, period. Read our customer comments from many people who've saved thousands of dollars. If our cable doesn't work on the tested vehicles listed above, I'll refund all your money.
- No special skills are required and you'll have your vehicle running again in less than 5 minutes.
- Can be used in lieu of towing your vehicle to the dealership or mechanic.
- Designed and assembled by an engineer and small business owner. Email support is normally immediate and telephone support is available evenings and weekends.
- It reduces worry. I carry one in my car at all times.
- All cables are soldered (not crimped), assembled, and tested in our shop.
- A great solution for auto repair shops to diagnose Dodge/Chrysler/Jeep no start or dead battery problems.
- Under the terms of a class action lawsuit for faulty fuel pump relays, you may be able to be fully reimbursed for the purchase of this cable.
- No remote start due to the vehicle disabling the rear cigarette lighter (M7) used to power the fuel pump relay (M25) in bypass mode.
- In bypass mode, it is unknown how it will affect safety mechanisms that shut off power to your faulty fuel pump relay during a crash.
Applicable Tested Vehicles for TIPM Test/Bypass Cables and TIPM Repairs
To ensure that our products and repairs will work on your vehicle, please verify that your TIPM is similar to this TIPM-7 version. It's normal to have mini-blade and cartridge fuses in different locations on this style TIPM, depending on your vehicle options and model.
|Jeep Grand Cherokee||Likely||Likely||Likely||Likely||Yes||Yes||Yes||Likely|
|Dodge Ram 1500||No||No||No||No||Yes||Yes||No||No|
|Dodge Ram 2500||No||No||No||No||Yes||Yes||No||No|
|Dodge Grand Caravan||No||Yes||Yes||Yes||Yes||Yes||Yes||Likely|
|Chrysler Town & Country||No||Yes||Yes||Yes||Yes||Yes||Yes||Likely|
|Dodge Ram 3500||Unknown||Unknown||Unknown||Unknown||Unknown||Unknown||Unknown||Unknown|
|Dodge Ram 4500||Unknown||Unknown||Unknown||Unknown||Unknown||Unknown||Unknown||Unknown|
|Dodge Ram 5500||Unknown||Unknown||Unknown||Unknown||Unknown||Unknown||Unknown||Unknown|
|Dodge Ram Cargo Van||Likely||Likely||Likely||Likely||Likely||Likely||Likely||Likely|
What This Cable Can't Do:
- This cable won't solve problems that are unrelated to your fuel pump (ie. windshield wipers, starter, lights, etc.).
- If your vehicle won't turn over and the starter will not even attempt to turn the flywheel with a properly charged battery, you likely have other issues that our cable cannot solve. See this link for problems unrelated to fuel pump relays.
- Our cables are not intended to be permanent solutions. They are great testing tools and many use them to bypass a faulty relay, but please take the time to review the limitations listed above.
- Although many have used this cable as a long-term solution, we would prefer that you use it to temporarily bypass a faulty fuel pump relay. The reason for this decision is due to the excessive cost associated with crash testing a vehicle to determine if power is removed to the fuel pump during a crash.
- Download instructions for our simple bypass cable (no LED) or standard bypass cable (includes LED and alligator clip). A printed color copy of these instructions is included with each order.
How To Build Your Own
The design is fairly easy to build and there are two versions, depending on your need. If you have questions, please email me rather than calling me late at night. The simplest version consists of two 20 amp "add a circuit" mini-blade cables soldered together, along with four mini 20 amp (yellow) fuses. Make sure your add a circuit cable can handle 20 amps of current. You might be able to buy them at your local auto parts store, but many people are reporting they can only find the 10 amp version which could cause the wire to overheat. With this design, you're taking power from fuse slot M7 (rear cigarette lighter) and providing it to fuse slot M25 (fuel pump). This version will keep your vehicle on the road by bypassing a defective fuel pump relay, and allow you to test your fuel pump. Be sure to add some heat shrink or electrical tape to the soldered connection between the two add-a-circuit cables. Directions on how to bypass a defective fuel pump relay and test your fuel pump are listed below.
A more complex version adds a 12 VDC green LED and ground wire alligator clip, permitting detailed testing of the fuel pump relay and fuel pump. The wiring diagram below shows how they are soldered together. With this assembly, you'll be able to use the LED to see if the fuel pump relay or fuel pump is bad. Directions on how to test your fuel pump relay, fuel pump, and how to bypass a defective fuel pump relay are listed below.
Since it can be difficult to locate add-a-circuit cables that can accommodate 20 amps, we sell a kit below that will allow you to build your own simple TIPM bypass/test cable. You can crimp both add-a-circuit cables together or solder them (preferred). This kit is $15, consisting of the following items:
- Two (2) 20 amp add-a-circuit cable assemblies, 5" long
- Four (4) 20 amp yellow automotive fuses
- One (1) piece of black heat shrink
Cables are IN STOCK and READY TO SHIP. Orders are usually shipped the SAME DAY. We ship Monday through Friday and most Saturdays. We offer a full refund if our cable does not work on the applicable (tested) vehicles shown below in green. If Paypal does not offer you multiple shipping options, login/create a Paypal account or contact us via email or telephone.
My 2011 Dodge Durango Crew would intermittently turn over, but never start due to a lack of fuel. This normally happened in the morning, when the vehicle was cold. Repeated attempts to start the vehicle were successful for awhile, but eventually it wouldn't start at all. After researching the problem via the internet, I found numerous complaints and even a class action lawsuit filed against Dodge for defective TIPMs. It appears that the fuel pump relay may be at fault in most of these situations since it is soldered to the TIPM circuit board.
I decided to take my Durango to the dealer and see if they could narrow down the problem since this vehicle has experienced similar problems throughout its life. Since my starting problem was intermittent (most failures occur when the car has been sitting for awhile), I knew it might be difficult to get it to fail at the dealership. All day long, the vehicle started up properly at the service department and I was told there was no problem. As luck would have it, the vehicle failed to start just as I tried to leave the dealership and I was able to prove there was indeed a problem. Further investigation by the dealer narrowed it down to a TIPM or fuel pump. Since my Durango was out of warranty, I was told a new TIPM was around $1100 (assuming that was indeed the problem). It was only a few months out of warranty, which didn't make me very happy. After several phone calls with Dodge to complain (800-992-1977), I was offered $500 toward a new TIPM, which left me paying $600 out of pocket. So I decided it was time to tear the TIPM apart and solve the problem myself.
This particular TIPM is not designed to be serviced by Dodge, let alone a car owner like myself. It is not made to come apart easy and special tools and skills are required to disassemble it without causing damage. After spending hours getting it broken down to the circuit board level where I could identify the fuel pump relay, I found the contacts contained large amounts of carbon deposits (see image) and a weak spring, thereby causing occasional situations where the relay failed to power the fuel pump. This observation was verified by my TIPM bypass/testing device, which earlier in the day was able to show via an LED that the fuel pump relay clicked on and off even when I was able to start the vehicle.
After testing the relay with the application of 12 VDC and a multimeter for continuity, I determined that it was indeed the problem. It's amazing how much pain a $5.00 relay can cause. I've also read about fuel pump relays that are welded closed, which continue to pump fuel until the battery is dead (long after the vehicle is turned off). Replacement relays were difficult to find and the only version that matched would have taken around a month to arrive from China, but I was eventually able to find a suitable domestic replacement (see parts detail at bottom of page). Until the part arrived, I still needed to drive my Durango. So, analyzing the inner workings of the TIPM allowed me to create a special testing/bypass device that would keep me on the road until I could repair the TIPM with a new fuel pump relay. All it takes is a connection of two 20A add-a-circuit cables in your TIPM fusebox. I was able to craft this fix by studying TIPM wiring diagrams along with hours of testing.
Testing/Bypass Device Details
My testing/bypass device allows the user to provide power to the fuel pump from an alternate power source (the rear 20A cigarette lighter circuit), permitting the vehicle to start when a defective fuel pump relay is present. I use two "add a circuit" wire harnesses in my device that permits a fuse on one circuit to function normally while pulling or adding power to a separate circuit. Users will simply need to plug their device into two circuits and attach an alligator clip to ground. The onboard LED always lights if the fuel pump is powered up. And my device also permits the fuel pump to be powered on when the vehicle is off, which often allows you to narrow down the problem to the TIPM by eliminating the fuel pump as a problem area.
Best of all, you can use this device to prove to Dodge that the fuel pump relay on the TIPM is bad. Ironically, my neighbor is experiencing the exact same symptoms with her 2012 Jeep Grand Cherokee, but she can't get it to fail at the dealership. If she could install this testing/bypass device, she could likely show them via the green LED that the fuel pump relay works intermittently. During my testing, I noticed that bad fuel pump relays will sometimes turn on and off in a quick, intermittent pattern that allows for just enough fuel to make it to the engine while showing the tell-tale signs of a defective fuel pump relay.
How To Test Your Fuel Pump Relay
- Turn vehicle off
- Open hood and remove 20A fuel pump fuse M25. Verify that M25 is your fuel pump slot.
- Insert the M25 end (contains an LED) of our bypass/test device into the M25 slot of your fuse box.
- Connect the black alligator clip to the ground lug located approximately 3" to the left of the black TIPM enclosure (fuse box).
- If the green LED lights up, your fuel pump relay is stuck in the "on" position and will eventually drain your battery. You can likely hear the gas tank mounted fuel pump operating if in a quiet environment. You'll need a new fuel pump relay. We suggest you pull fuse M25 each time the vehicle is turned off in order to prevent battery drainage until repairs can be made. In the meantime, you can use our test/bypass device to keep your vehicle on the road, by using our device in the bypass mode (see details below) while removing the lower 20A fuse under our LED.
- Have someone attempt to start your vehicle while you watch the green LED
- If the vehicle starts and the green LED remains continuously lit, everything is functioning properly.
- If the vehicle starts and the green LED flickers on and off, your fuel pump relay is going bad. My vehicle experienced this type of flickering on and off for approximately 30-60 seconds when first started, but the fuel pump was still able to deliver enough fuel to not starve the engine. After several minutes, the fuel pump relay would work appropriately and the green LED would remain lit. Of course, it eventually didn't start one day and the green LED was not lit.
- If the vehicle does not start and the green LED never lights up, your fuel pump relay is bad. See the fuel pump relay bypass section below to start your vehicle until repairs can be made.
- If the vehicle starts and the green LED does not light up, make sure you've connected the black alligator clip to ground.
- In summary:
- LED on before starting = Fuel pump stuck on
- LED off during starting and vehicle won't start = Fuel pump relay bad
- LED off during starting and vehicle starts = Alligator clip not connected to ground lug or LED not working
- LED flickering during starting = Fuel pump relay going bad (vehicle may or may not start)
- LED on during or after starting = Fuel pump operating properly
How To Test Your Fuel Pump
- Turn vehicle off
- Open hood and remove 20A fuel pump fuse M25. Verify that M25 is your fuel pump slot.
- Insert the M25 (contains an LED) end of our bypass/test device into the M25 slot of your fuse box.
- Remove rear power(cigarette) outlet 20A fuse M7.
- Insert the M7 end of our bypass/test device into the FAR RIGHT slots of the M7 fuse slot. The M7 fuse slots consist of three terminals (the far right terminals provide 12VDC power when the vehicle is off). This connection provides power directly to the fuel pump.
- Connect the black alligator clip to the ground lug located approximately 3" to the left of the black TIPM enclosure (fuse box)
- If your fuel pump is working properly, you'll see the green LED light up and hear the gas tank mounted fuel pump operating if you're in a quiet environment.
- If you see the green LED but don't hear the fuel pump, you may have a bad fuel pump.
- If you do NOT see the green LED, but do hear the fuel pump, you likely need to make sure the alligator clip is attached to ground.
How To Bypass A Defective Fuel Pump Relay
- Turn vehicle off
- Open hood and remove 20A fuel pump fuse M25. Verify that M25 is your fuel pump slot.
- Insert the M25 (contains an LED) end of our bypass/test device into the M25 slot of your fuse box.
- Remove rear power (cigarette) outlet 20A fuse M7.
- Insert the M7 end of our bypass/test device into the FAR LEFT slots of the M7 fuse slot. The M7 fuse slots consists of three terminals (the far left terminals provide 12VDC power ONLY when the vehicle is starting or when in ACC mode). This connection provides alternate power directly to the fuel pump, thereby bypassing the defective fuel pump relay.
- Temporarily connect the black alligator clip to the ground lug located approximately 3" to the left of the black TIPM enclosure (fuse box)
- Start vehicle.
- You'll see the green LED light up, indicating that alternate power from the rear cigarette lighter circuit is now powering your fuel pump.
- Disconnect black alligator clip and make sure it does not come into contact with the positive terminal toward the upper left of the fuse box. A small piece of electrical tape placed over it will help keep it safe.
- You should be able to start, drive, and turn off your vehicle as you normally do. Our test/bypass device is normally intended as a temporary solution until you can implement a permanent fix. Due to the large number of vehicle types with fuel pump relay problems, it is unknown if any auto shut down features are affected during a crash.
- Use of remote start will not work with this cable. Some TIPMs appear to conserve power by disabling the left slots of the M7 circuit during the starting process. Less than 1% have reported this issue while in bypass mode. A workaround is listed in our Frequently Asked Questions (FAQ).
- If your fuel pump relay is stuck on the ON position, which will drain your battery, remove the lower 20A fuse in our "add a circuit" device that is plugged into fuse slot M25 (located under our LED). This will remove power supplied to/from the fuel pump from the faulty relay and allow alternate power to be supplied to it as described above. Then start vehicle.
Tips From Other Owners
- If your fuel pump relay is stuck on and it drains your battery, simply remove fuse M25 when the vehicle is off. This is easier than disconnecting the battery. Our TIPM test/bypass cable, an external relay, or new TIPM should solve this problem permanently. Other solutions include tapping on the TIPM (fuse box) to disengage the relay.
- Try starting your vehicle in neutral if it won't start at all while in park.
- If your fuel pump relay won't engage and your vehicle won't start, try your remote start. I can't explain why this helps, but many have reported success with this method.
- If using our TIPM test/bypass cable and you don't have a ground lug nearby for the alligator clip, you can connect it to an unpained area on the vehicle chassis (frame).
Frequently Asked Questions (TIPM Test/Bypass Cables)
1) Is it a problem if my fuel pump relay delivers 12 VDC while the TIPM bypass cable delivers 12 VDC from the rear cigarette lighter circuit at the same time?
Answer: No. As long as one of them delivers 12 VDC to the fuel pump, your car should start. If both provide 12 VDC, your fuel pump still sees 12 VDC and it pumps as expected. If you'd prefer to disconnect the TIPM-mounted fuel pump relay and rely solely on the TIPM bypass cable to provide 12 VDC, then remove the lower fuse on the TIPM bypass cable that is connected to M25 (this is actually how you combat a fuel pump relay that is stuck in the ON position).
2) How long can I drive with the cable? Is it a permanent solution?
Answer: Many people have used our cables for extended periods of time (1-2 years), but we prefer to list it as a temporary solution due to the limitations listed above. Our cables mainly serve as testing tools to determine TIPM problems, but thousands of people use them to stay on the road. For a more permanent solution, we suggest you begin with a TIPM test/bypass cable to find the problem and then upgrade to a TIPM repair when convenient. We'll also refund the full cost of your TIPM cable when you upgrade to a TIPM repair.
3) Will your cable leave a closed circuit with constant 12 VDC power to the fuel pump when the vehicle is off?
Answer: No. When using our bypass cable, power is only delivered to the fuel pump when in ACC mode or while the vehicle is running. Your fuel pump will not be powered on when the vehicle is turned off. However, if your faulty old relay is stuck on, you must remove the lower 20 amp fuse on the M25 end of our cable in order to completely disconnect it from the fuel pump circuit.
4) What percentage of people have a no start condition with their fuel pump relay compared to those who have their fuel pump stuck on when the vehicle is off?
Answer: Based on the thousands of phone calls I've received since August 2014, I would guess that 65% have a fuel pump relay that won't engage (no start), 20% have a fuel pump relay that is stuck on (draining their battery), and 15% have a combination of both. It's not uncommon for relay failures to switch from one failure mode to another.
5) My battery keeps draining. How can I temporarily fix my fuel pump relay "stuck on" situation without using your TIPM cable?
Answer: Turn the vehicle off, go the rear near the fuel tank and listen for pumping noises to see if fuel pump is still on. If so, remove fuse M25 (labeled fuel pump) only when your vehicle is off which will prevent power being delivered to the fuel pump. You can also install our bypass cable and remove the lower fuse on the M25 end per the above instructions.
6) Is the TIPM bypass cable still effective if the external fuel pump relay recall has been added?
Answer: Our TIPM test/bypass cable will not work in this scenario (nor will it normally be needed) because the faulty fuel pump relay and fuel pump fuse (M25) has been permantently removed from the circuit. The new external relay has its own fuse. The recall involves cutting numerous fuel pump wires leading in/out of the TIPM, thereby disconnecting the existing fuel pump relay circuit from the fuel pump. If you continue to have problems with your new external fuel pump relay, we are working on a short video to show you how to test it.
7) Are any safety mechanisms affected by faulty fuel pump relays or bypass cables?
Answer: If the vehicle shuts off power to all 12 VDC circuits on the TIPM during a crash, then all original safety mechanisms should work properly. However, it is unknown how it will affect any safety mechanisms that shut off power to your faulty fuel pump relay only.
8) In bypass mode, my car only starts on the second attempt or won't start in cold weather. Is this normal?
Answer: It's rare, but some TIPMs won't power on the M7 circuit during the starting process. We've performed some testing/research to determine that it's likely attributable to the TIPM cutting off all unnecessary power draw during the starting process in cold weather or with lower battery voltages. With no power to M7, the TIPM cable can't deliver power to the fuel pump via the M25 fuse slot. There are two workarounds: (1) Cycle your key or start button to ACC and RUN mode, then start the vehicle; (2) In extreme cold weather, move the TIPM cable from the left slots of M7 to the right slots. Start the vehicle and then move the cable back to the left slots of M7. Keep in mind that plugging into the right slots of M7 forces the fuel pump to remain on all the time, so you'll need to return it to the left slots while the vehicle is running or after driving. This isn't an issue with our cable, but perhaps how the TIPM handles cold weather starting.
Low battery voltages may be due to your faulty relay being "stuck on", which powers your fuel pump when the vehicle is off until it partially or completely drains your battery. It's complicated, but some faulty fuel relays fail in different ways. They may fail early on by simply not allowing power to pass through the M25 fuse and on to the fuel pump. Then they can switch to being "stuck on", which keeps your fuel pump running when the vehicle is off. You'll need to remove the lower yellow 20 amp fuse on the M25 end of our cable to completely disconnect the faulty relay from the fuel pump circuit and prevent battery drainage. The next time you try to start it and it fails, hook up the alligator clip to ground and watch the green light if you have the LED version of our cable. If the green light comes on when you turn the key to ACC, but then goes out only during the starter cranking process, your battery voltage is likely low. Charge your battery and/or make sure the lower fuse on the M25 end of our cable is removed. If your fuel pump is receiving power during the starting process but still fails to start, you might: (1) Have a faulty fuel pump (please use our cable to test your fuel pump), (2) Have no gas in the vehicle, or (3) Have a faulty crankshaft sensor or other problem that is outside of our knowlege base.
9) With the cable installed in the M7 slot, does the rear cigarette lighter work and can my kids use it to power their hand held games or cell phone?
Answer: Yes. If you keep both fuses on the M7 end of my cable, then you can use it for other things that don't draw too much power (ie. cell phone, ipad, etc.). Fuel pumps normally consume around 8 of the 20 amps on the circuit.
10) What does the typical fuel pump circuit look like?
Answer: The order of components is: +12 VDC ----- Fuel Pump Relay ----- 20 Amp Fuse ----- Fuel Pump. A relay failure means no power at the fuse or pump. The arrangement of this circuit also benefits us since we can inject +12 VDC power via a TIPM test/bypass cable into the 20 Amp Fuse slot to power the fuel pump. If you were to swap the relay and fuse positions, as was done on many 2010 and older Dodge Rams, our TIPM test/bypass cable becomes ineffective. For details, see our wiring diagram section.
11) Why does my remote start still work after installing the TIPM cable? Why is remote start listed as a limitation of the TIPM cable?
Answer: It's complicated, but your remote start may still work if you still have the lower fuse installed on the M25 end of our cable. If your old faulty relay is working intermittently, remote start will still allow the vehicle to start when the relay is having a good day. By removing the lower fuse, which is needed in case the old faulty relay gets "stuck on" and it drains your battery, it will completely disconnect the relay from the fuel pump circuit - killing any remote start capabilities. Remote start is listed as a limitation because the TIPM normally removes power to the M7 circuit and other unnecessary circuits during the starting process. It devotes the extra power solely to the starting process, and that includes the bad relay. When bad relays are powered with higher voltages voltage, they often work better. Since the M7 circuit has no power during remote start (and in some cases, when the battery voltage is low), our TIPM cable may not receive power. This isn't a TIPM cable issue - it's simply the way the TIPM deals with power.
12) My 2012 Caravan is having problems starting, sometimes a grinding sound and sometimes it starts fine. Would the fuel pump relay cause this issue?
Answer: Yes, it's possible.....and I'll explain why. Fuel pump relays often fail by clicking on and off very fast. Sometimes they click on fast enough to stay running and sometimes not. When your vehicle detects that is has "started", it disengages the starter solenoid. If the fuel relay is still clicking on/off just enough to keep it running, but not fast enough for to detect the vehicle is running, the solenoid can stay engaged in the flywheel, creating the grinding sound. It sounds like this because it is indeed slowly grinding the teeth off your flywheel and solenoid.
13) My car still won't start with the TIPM test/bypass cable installed. What might cause this?
Answer: The following are possible causes for this situation while using our cable:
- TIPM test/bypass cable isn't hooked up to the proper fuse slots. It must be connected between M7 and M25. Some people try to hook it up to M37 since it is also labeled "fuel pump", but this fuse slot has no connection to the fuel pump relay.
- Check TIPM test/bypass cable fuses. Some people accidentally touch our cable to ground while plugged in to the TIPM, which may blow a fuse.
- Make sure the top fuses on each end of our TIPM test/bypass cable are installed. Top fuses permit power to flow from one end of the cable (M7) to the other (M25). Bottom fuses allow the original fuse slot to function properly.
- Have you checked your fuel pump using the TIPM test/bypass cable to see if it's working? A fuel pump pressure test is something else to keep in mind if all else fails.
- An obvious question, but I have to ask.......do you have gas in the vehicle? Is your fuel gauge working properly?
- It's quite rare, but sometimes the TIPM decides to kill power to the M7 slot during the engine cranking process. This may happen in cold weather or with car batteries that have been drained recently. More information and a workaround is here.
- Check/replace your camshaft and/or crankshaft sensors.
Below are customer comments sent via email. Feel free to check out all the impartial positive comments on our YouTube video.
-Hey buddy, it took me about 90 seconds to install the wire and I have driven it all day with not a single problem. Thank you for saving me $1000! -January 03, 2017
-I wanted to thank you again for the cable I purchased from you. It worked just as advertised and has really solved our problem. I actually showed your bypass cable to a mechanic and they were very impressed by it. They even took pictures so they could reference it in the future. Thankfully because of your invention we were able to make our holiday travel and enjoy Christmas with my family! -December 29, 2016
-You are the man!! I had the failed relay problem and made up your cable, it works GREAT!! Thank you so much. From one Engineer to another - you have my respect and you are an honorable man! -December 3, 2016
-Just wanted to write a quick thank you!! I ordered my relay bypass cable late Friday night, had it by Monday. My 2011 Dodge Grand Caravan has been giving me trouble for weeks. My mechanic wouldn't listen to me when I was reading him the information on your site. After insisting I replace the fuel pump he was dumbfounded when I called him the next day stranded on the side of the road. I'm a single mom, working 2 jobs so this van is a necessity. A million times thank you!! I hope you and your family have a very blessed holiday season. -November 30, 2016
-Thank you for the quick delivery! Just watched the video as I was testing/bypassing the relay. Took me all of 15 minutes. I have a 2011 Dodge Grand Caravan that would crank but not start. It was the relay that was the problem. Using the bypass and it works like a charm now. I do PI work and I am often in areas where I couldn't afford to be stranded, if you know what I mean. Well worth the money for peace of mind! -November 30, 2016
-My 2011 Grand Caravan is a "Happy Car" now that I used your bypass cable. The fuel pump relay was defective for sure, just as I expected. Thank you for saving me hundreds of dollars on a new TIPM, not to mention tow bill and wasted time. You are a BLESSING, my friend. -November 23, 2016
-HI Jason, I can't even begin to tell you how happy and excited I am. I live mostly payday to payday and dreaded the thought of even having to put my 2011 Ram 1500 in the shop. I Googled my problems with my truck and came upon your ad that read almost word for word what my issues were. I took a chance and ordered the bypass cable. My friend put it on in less than a minute and my truck started right up. Thank you for sharing this information and giving an inexpensive option! I am back on the road! -November 17, 2016
-Hi Jason! I received your wire yesterday. Followed the instructions, and my car is working perfectly! I can't tell you how much I appreciate your work and for taking the time to develop this product for us dodge/Chrysler/VW users who experienced this issue. I am grateful! Thanks again! -November 10, 2016
-Can't thank you enough! The TIPM bypass cable worked like a charm and my wife's car is back on the road for the first time in 60 days. We were prepared to drop some good money into the van until we stumbled upon your video. She actually cried when the thing started up.. Thanks again. -October 24, 2016
-Recently ordered your product and was thoroughly satisfied with my purchase. The package arrived on time, the included directions were complete and it took 5 minutes test ,bypass and get my wife's Van back on the road. Saved me almost $500. Great product and good work, you guys are lifesavers. -October 18, 2016
-Just wanted to say thanks... Product works flawlessly!!!! -October 6, 2016
-Hi Jason, part came in mail! Tore it open, read the instructions and installed it. Started up and then again a half hour later! Wow! A mini van that starts! If this continues, I won't know what to do with myself without all the stress every time I get in the car. Thank you for figuring this workaround out and sharing it with the rest of us who were at a loss with the dealership. Will most likely send in the whole unit to you for repair when I figure out a time that I can be without my car for a few weeks. -October 1, 2016
-First of I'm a father of four and my time is precious, but I had to take the time to email you a review. Very fast shipping! Ordered Sunday received Wednesday. Started my 2011 Dodge Grand Caravan FIRST TRY! I'm an aircraft mechanic currently working in a transmission factory rebuilding failed transmissions to give an idea of my skill level. Your idea couldn't have been easier, wonderful video as well. I could have just gone to the store and made my own.... but you did a fabulous job, so convenient to just order yours.....and I wanted to support you all. Thanks so much. So convenient, product is exactly as advertised. -September 28, 2016
-Thank you very much for figuring out this bypass cable fix. I have a 2011 Ram 1500 and it slowly started having troubles starting until it finally would start at all. I saw your website and I was sure this was the problem but the wife insisted that I have it towed to a mechanic. Sure enough the Mechanic said I needed a new fuel pump. I told him about the TIPM problem but he insisted it was the fuel pump. I saw on your website that a lot of people had replaced the fuel pump only to discover that the fuel pump was fine. I received your cable, went up to the mechanics shop, got my keys from him and had my truck running in his shop within 10 minutes. He asked me if I needed a job. Lol..-August 28, 2016
-I just wanted to say that you are the man. I'm literally moving across the country tomorrow and this fuel pump relay issue started happening today in my 2011 Chrysler town and country. Short story, I built the cable from your instructions with the help of my electrical engineer father-in-law and problem is solved. Thanks again figuring this out and posting it online. -August 27, 2016
-We received our repair kit for our Chrysler Town and County yesterday. We installed it this morning and the van immediately started. We tried to start it before we put it on and it wouldn't turn over after 6 trys. Thank you for coming up with the this repair solution so that we can decide what we are going to. -August 16, 2016
-Just received and installed the cable on my 2011 Jeep GC and it started right up. Awesome!!! -June 27, 2016
-Jason, [I received] the bypass cable this afternoon and I want to thank you it solved my problem 100% it took longer to unpackage it then it did to take care of the problem. I just want to again thank you you save me money I did not have thanks again. -May 23, 2016
-Your product is a life savior. You can add 2012 Chrysler Town and Country to the tested vehicles. Mine has been working for one month with no issues. -March 5, 2016
-I just wanted to thank you for developing a cable that provides a work around for the TIMP on our 2011 Dodge Caravan. The instructions were clear and the process took less than 15 minutes. The vehicle starts first time every time now and I can't thank you enough. -February 14, 2016
-Would just like to thank you for helping me out. I ordered the standard cable very early yesterday, with express shipping it arrived the next day. Was able to test and determine the fuel pump relay was bad in my wife's 2011 T&C within 2 minutes. Taped off the clip, left the cable in place and the van starts everytime. The remote start even still works because I didn't have the problem of the pump continuously running. This will give me time to determine the next course of action and keep the van on the road. -January 06, 2016
-YOU'RE A GENIUS!!! THANK YOU TIMES A MILLION. With the help of your information on line I was able to troubleshoot my 2011 RAM 1500, start my truck and go home!!! (I was 200 miles from home...) the relay was faulty. THANK YOU!!!! -December 23, 2015
-Got wire this evening. Called you Saturday. Worked like a charm. Thank you very much. Have a merry Christmas and Happy new year. -December 21, 2015
-I received my cable this afternoon. It works great! Thank you for making the product. -December 8, 2015
-Just received your bypass wire for my 11 Ram 1500. Took about 1 minute total install time. That's including shoveling about 5 inches of snow off the truck. Twisted the key and it started right up. Went back into the house and my wife couldn't believe it was that quick of a fix. YOU ROCK!!! Thanks so much for taking the time and energy it took to come up with such an awesome and affordable fix for this problem. -November 24, 2015
-Hi Jason. I just wanted to let you know that my husband installed the relay on my Caravan at the Dodge dealership last evening. The longest part of the installation was him walking back to our other car to get his glasses so he could read the map on the TIPM module. I want to thank you for designing this part and making it available to those willing to do a little research about this defect and finding you. Shame on Chrysler for taking advantage of consumers. Palmer Dodge wanted $520 to do what you helped us do for $30. You are a true American and I am thankful for you. -November 24, 2015
-Thanks so much for your simple but elegant solution to Fiat - Chrysler Corporation's manufacturing nightmare. It took me less than 5 minutes to confirm the fuel pump relay on my wife's 2011 Chrysler Town & Country van was kaput, and to bypass it with your cable. The hardest part of the installation was trying to pull the M25 fuse -- it's so close to the relay cover that I couldn't get the puller on it and had to use my pocket knife. You provided most excellent service. Ordered it Friday @ 0700, you shipped it same day from West Virginia @ 0900, and I had it in my hot little hands in Fayetteville, GA , on Monday @ noon. Just hope Chrysler Corp does the right thing and fixes all the $30,000+ paperweights they've manufactured, but not holding my breath for a quick resolution. Your bypass cable will probably still be on my vehicle when it dies of old age. -November 24, 2015
-I have a 2011 Dodge Ram 1500. It was doing what all the other people described. Trying to start but only cranking. Then it would start, then it would not. I spent about $1000 changing out the fuel pump only for it to do the same thing. I was really aggravated and started looking for answers and stumbled upon your website. After building the relay and installing it correctly it works like a champ. I just wanted to say thank you for saving me from having to pay $1200 for a new TIMP. Hopefully the Lawsuit against Dodge will hold them accountable and they will have to pay for all the defective parts they put out and all the wasted money customers have spent on parts they did not need. In the meantime though your invention will keep me on the road. Thank you so much!!! -November 21, 2015
-Had trouble starting my 2011 dodge ram roughly 2 months ago. Got to the point where I needed a jump to start the truck after sitting off for 1 or more hours. Replaced battery thinking electrical issue was the reason. It ran fine for a day, until the next morning when the truck was completely dead. Hooked up jumper cables once again but I didn't start the truck right away. I heard a slight whine coming from under the back left tire. Turns out my fuel pump was now stuck in the "on" position completely draining the battery. Bought this cable and received in 3 days, took 2 minuties to install, and has completely aliviated any issues with the truck starting!!! Thanks so much for making this cable, have already told my friends with similiar year Dodges to purchase one. Thanks again for making this product!!!! -November 18, 2015
-Thank you. Good to see someone from the region I grew up in making such an impact by finding a solution and sharing it. Had this issue show up on my 2011 Ram 1500 and your instructions were excellent. I tested the relay failure by connecting the fuel pump fuse to constant power and the pump turned on. Cranked the truck and it ran until I disconnected the constant hot. In my case the remote start still functions. You just saved my plans for the Thanksgiving week. -November 15, 2015
-I just wanted to say thank you for your video and website for this fix. My wife has a 2012 Jeep Grand Cherokee that incurred this issue at 45k miles. I spoke with my mechanic who told me that it sounded like the fuel pump was going bad. After combing through dozens of forums & reading people complaints, I knew to expect that and the TIPM replacement were common "solutions" suggested by mechanics & dealerships. I became frustrated on the lack of known resolutions until I stumbled upon your website. It was a super easy fix and has been running great ever since. Cost me $18 bucks and 5 minutes. It was a relief to know that there is someone out there not pissed off at the world and willing to help out. Once again, thank you for your time & savings of thousands of dollars. -November 11, 2015
-Ordered bypass wire Nov 4th received wire 6 Nov! Figured out that it was the relay in less than 5 min! Thanks for figuring this out and saving everyone tons of money! Now to the shop to get it fixed. Oh and I have a 2011 Chrysler Town & Country -November 6, 2015
-Hi Jason, Received the wire this morning [sent to Saudi Arabia}. Tried it. Thumbs up. Thanks. -October 27, 2015
-Got the Bypass cable today and got our vehicle back into use! Thanks again for the great job providing your solution. We have an appt to have the external relay done next week. I may cancel the appt and make a more convenient one now that I am in no rush. -October 26, 2015
-Hands down to you sir. Truck has been starting up great. Thank you so much!!!!! -October 25, 2015
-Just wanted to say that your product is great. Received it yesterday and it works like a charm. Recently laid off and didn't have $1200 to spare. Picked up my truck from the dealer, paid $95 diagnostic fee, inserted bypass cable and drove home. -October 21, 2015
-Just wanted to say thanks a million saved us,1200 bucks with the wire harness and now know exactly what's wrong with my town and country running just fine now hopefully they will recall and own up to the faulty tipms - October 7, 2015
-I just put it on and it worked perfectly. I took the bottom fuse out of m25 since I have had both problems - failure to engage the fuel pump and failure to turn off the fuel pump. Hopefully, Dodge will recall these at some point but this is a doable solution for now - October 5, 2015.
-Thanks to you I'm back on the road !! The product worked !! THANKS - October 5, 2015.
-My name is Justin I recently ordered the by pass cable for the fuel pump and I just want to give a BIG THANK YOU, Your a life saver brotha! You saved me over a thousand dollars to replace the TIPM. My 2011 ram powerwagon is workin like a charm now. If I know of anyone that is havin problems like I did with my fuel pump, Ill shoot them your way. Just want to say Thank You Again! You have a good day brotha! - September 30, 2015
-Jason-You sent me your Testing/Bypass device a few days ago and we installed it on my 2011 Dodge 1500. So far it has fixed the issue of my fuel pump constantly running and now my battery is not draining overnight. Thank You for coming up with this solution - September 25, 2015.
-We appreciate the product you have come up with. As I lost my [engineering job] a few years back, money has been tight. We really weren't in the position to have to pay the $1200 for Dodge to repair our TIPM, all the while knowing that they should bite the bullet and make it a recall. Your Bypass worked as you said it would and we hope it will hold us over until the recall is expanded to include our 2011 Grand Caravan. - September 22, 2015
-I fixed it!!! thanks to your article and the diagram, I was able to make it myself. THANK YOU, it worked perfectly. you did such a great job on explaining how to do this , i thought i'd give it a shot. Thank you for your time on this matter, you helped a complete stranger. I pray God Blesses you and your family. - June 22, 2015.