Having problems with your Cars & Trucks ?

No power to power up obd2 connector under dash witch terminial can I supply power to so can get into inboard computer to scan

Posted / edited by AnonymousUser on : 22-01-2018

Answers :

Repair Help & Product Troubleshooting for Cars & Trucks

Tips for a great answer:

- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.

Suggested Questions/Answers :

No power to power up obd2 connector under dash witch terminial can I supply power to so can get into inboard computer to scan


... Cars & Trucks

2003 Ford F150 super crew OBD2 port not communicating with scan tool. Tried Autozones, advanced auto parts, and my Bluepoint scan tools. All do the same thing. Says to turn on ignition and press power. I've done every combo of key on/off power on/off, and nothing. I've checked all the fuses and ground wire in back of radio. I do believe the port is getting some kind of power because if I have my scan tool plugged in to the OBD2 port, when I turn the ignition to run it powers up the scan tool, ye


... Cars & Trucks

Trying to locate TCM. Jeep stalls sometimes when stopped with a clunk.And RPMs increase and fall back to normal and feels like transmission is slipping or going into neutral. thinking it may be TCM. computer went out and was replaced with a reman. unit that was flashed to my vehicle about a yr ago. Had vehicle scanned for codes at Autozone and scanner would not power up. was to;d that computer was not getting power and that might be ECM fuse but cant find that either. Help please.


... 2003 Jeep Grand Cherokee

2000 dodge status 2.4 it had an internment run and not run problem and then threw a code ( ignition no signal form the crank or cam sensor) forgot witch one so I scanned it again and no code so I changed them both and nothing checked for spark anew nothing so I changed the coil and still nothing checked all fuses all good and have power change all relays to the pcm and computer nothing so I changed the pcm thinking its getting power but not putting out still nothing and I did the timing belt a


I think it could be the wiring between the crankshaft and/or camshaft sensors. Check for reference voltage at the sensors. ... 2004 Dodge Stratus

Wher are the fuses located for the obd2. computer and how many are there? the obd2 plug is not getting power.


... 2000 Nissan Quest

My problem is my computer scan is telling me that the cam sensor is malfunctioned in my 1997 jeep cherokee laredo 4.0 liter engine--i replaced the distrubutor, rotor, etc.--now it's still won't start and upon power probing i found that i am getting fire into the coil wire but it is not going out to the plugs---any ideas? the cam sensor is actually IN the distrubutor on the engine right? if not where is it and what other things should i check?thanks


The Camshaft Sensor is built-in to your distributor. I would check to make sure the Rotor isn't installed backwards. You will need to bring the #1 Cylinder to Top Dead Center and make sure the Rotor in your Distributor is pointing to the #1 Spark Plu ... Jeep Cherokee

My 1992 mustang gt stoped running yesterday it seemed like it wasnt getting any fuel the pump wasnt powering up, i replaced the fuel pump and filter and tryed to start the car and it is doing the same thing the pump powered up one time then it stopped working again. i tryed connecting up a scanner to the computer and iam not getting and codes its like its not comunicating with the computer. do i have a computer prob.????


You may have a computer problem but you need to Replace the fuel pump relay before proceeding. Also remove the fuse and make sure the connections are clean and tight. ... 1992 Ford Mustang

On a 1990 geo prizm i fried the computer by jumping the wrong terminals during a diognostic test. Or at least thats what i figure cause there is no check eninge light and the car does not fire anymore. I bought a parts matching computer, same exact one and plugged it in and nothing. Do i need to get this new computer reprogrammed for this car even though the age?? I know the computer is getting power have checked that. Will i still get no check engine light with the new computer if i do not


Is this a new computer or a used one? Where did you get it? You checked all the power supplies and grounds to the ecm? ... Geo Prizm

I have a vacume problem also my cold start doesnt have power to it.i checked the wire harness at the computer it has power it seems with a multi meter the more i look it just gets worse i'm thinking its in the connections but it just gets worse!i went to the junk yard 4 a new computer and of course there are no 90 toyotas at all so now i'm removing the intake to expose all of it .any sudjestions?


You mean you want me to pay?come on .i just got a different ecu at the junk yard.and it fixed it.i took the brackets off and put it down my pants.lol.and you want me to pay...;.lol ... 1991 Toyota Pickup

I have a 1990 lexus ls 400 it has no power to fuel pump or to injectors i checked the fuel pump relay it was good but getting no power to relay either seems like no power to any of the fuel components i checked the efi relays also fuses too i can run a hot wire to the fuel pump and it runs, i have test lighted everything i can think of to see if it can get power or has power. when i put power to the injectors with the test light they are showing they are fine, is this a computer problem or is it


Yes have the computer repaired and this should fix the problem. these cars are known for have the computers go bad. ... 1990 Lexus LS 400

I have a 2002 buick rendezvous I am have trouble with the fuel delivery it's not getting any power back to the fuel pump we had it started when we ran a wire to fuse box and ran it strait to fuel pump and it started right up I would like to know why I am not getting any power back there could it be that there's no power coming out of the junction box underneath the driver side of the car there is a power supply box under there and a wire coming out of it run right to fuel tank and fuel pump I ne


... Cars & Trucks

Obd1 scan tool will notaccess data from ecm engine dies check oil and check gauge light comes on engine starts right back up tried to get codes out of ecm but can not get code tool to link up with ecm GM pontiac with obd2 plug in but is obd1 ecm scan tool shows that we are connected but will not scan codes


A couple of ways to check and see if the computer is ok first:\015\012check engine light must come onwith they in on position\015\012The fuel pump must run for two (2) seconds with the key ON\015\012There must be a 5 volt reference ... 1994 Pontiac Bonneville

1977 gmc pu power window power supply not getting to the window swich where does the power start from to get to the window swich


Right at the power window or acc. circuit in the fuse panel ... 2000 GMC New Sierra 1500

I have fitted new engine and trans to 1981 Corvette and have disconnected all the old computer wiring as am no longer using computer chip.What is best way to go about getting power to fuse box.Have power at starter and altinator but thats all.On the altinator have power were it connects from battery but not at pastic two wire clip comming out of altinator and I think this feeds the fuse box


Run a cable from the battery positive to the fuse box. Don't mess with the wires in the clip they are for the regulator. once you get power to the fuse box, you have power there from the ignition. ... Chevrolet Corvette

Is there a inline power supply wire fuse, to a stock ford radio, or just the fuse in the fuse box??? I replaced the fuse, it was burnt, but still no radio, everything else is getting power, so , was wondering if theres an inline fuse in the power supply wire???


Some radios have fuses in the back of them so remove the radio and look there ... 1989 Ford Thunderbird

My brother, who lives 100 miles away, called me about his '92 Ranger (2.3L 5-speed) that died on him while driving throgh town. I had him check the fuel pump for electric power (remove gas cap, turn ignition to "on", and listen for a several-second whirring noise in the tank, which DID happen). So the fuel pump is getting power, but possibly not pumping. Other posibilities are the electronic ignition module, the computer, etc. How does one check the module, the computer, etc. without replacing e


The 2.3 is almost bullet proofI have over 300,000 on minelets talk about how it doesn't startis it a fast crank, slow crank or normal crank?does he have spark!of all the possibilities I can think of are... ... 1992 Ford Ranger

Car is not getting fire, and there is no check engine light when i turn on the ignition. Have checked all the fuses that i know of and also have bought a parts matching computer. All in vain. The problem started when we tried to read the trouble codes and jumped the B+ terminal to the E1. In doing that i heard a pop, sounded like a fuse but like i have said i checked all that i can find. I know i am getting power to the computer. please help!!!! paul


No year or model mentioned newer pcm's required to be flashed with the vehicles VIN to operate ... Geo Prizm

My 2001 XJR was not getting full power and the check engine light was coming on, but with no useful codes read off the computer. Tensioners were just replaced with metal (not plastic), but the problem persists. MAF sensor just replaced. That seemed to fix the problem for a couple of days. Now it is worse than ever. Am getting the restricted performance warning especially when I use the air conditioner and very limited power. What in the world is going on?


CHECK TO SEE IF ALTERNATOR CHARGING BATTERY.CHECK BATTERY VOLTAGE AT BATTERY WITH VECHICLE RUNNING.SHOULD BE 13.5 TO 14.5 VOLTS.IF NOT.TENSIONER WRONG TYPE CAUSING DRIVE BELT TO SLIP.KEEPING ALTERNATOR FROM CHARGING BATTERY. ... Jaguar XJR

My 1998 plymouth breeze wont get spark. a scan tool was used which gave a code for the cam positioning sensor. i replaced that and still no spark. please help. when it happened i was driving and the power to the car just went real low and when i stopped at the red light the car stalled. it started back up enough for me to go 2 blocks and then it died. i have power to the car but no spark. if the timing belt jumped, would that cause it to not get spark and give that code?


... 1998 Plymouth Breeze

After I got my battery replaced the car started to idol at around 30 mph and the rpms were about 3000? I know that you can reset the computer by unpluging the battery for 5 minutes but the computer dosent lose all its power for hours so if I do that and let all the power drain out of the car then reconect it, is all I have to do is get my stereo codes?


You do not need to get your stereo codes, the code is already "hardwired" in.To reset everything, just disconnect the battery for 30 minutes. ... 1998 Cadillac Seville

I have a 2003 chevy silverado 1500 2wd with a 4.8 liter when im driving i get on the dtc reduced engine power atleast 5 times a day. When i scan it the code comes up as P1125 severity 2 times when read. I replaced the throttle body the pedal position sencer , throttle control module, also bought a new throttle body harness soldered it shrink tubed every thing. I splicede the wires back 18 inches back cleared all engine codes and am still getting this reduced engine power


Check your spark plugs and wires, 2 things that majorly affect power. \015\012if your plugs are old/corroded/gapped wrong, you will lose major pressure\015\012Hesitation or misfiring when accelerating. This may be due to a vacuum leak, bu ... 2003 Chevrolet Silverado 1500

1996 ford contour with a coil pack that isn,t getting any spark and i use a obd2 unit connected to the car computer; and the reading from the obd2 unit reading is no data from the car computer.so i thought it might be the computer-ecm. but i have to check out the crank sensor ?


Coming from a professional standpoint you own a terrible car. let me explain why, most of the contours i've worked on have had defective wiring harnesses in them. the insulation on the heavy positive cables from the battery to the fuse box and starte ... Ford Contour

I have a 1995 chevrolet lumina mini van with a 3.1 liter engine. When I am driving whenever a accelerate to pass a vehicle or give it any type of gas to get sudden power it backfires and cuts out real bad. This problem gets progressively worse as the vehicle warms up and is especially bad when trying to pass on the interstate. I have replaced the map sensor, there was a code for this in the computer. There are currently no codes stored or pending in the computer and I am at a loss where to proce


THERE are a couple things could be going on. low fuel pressure can cause this possibly from a restricted fuel filter. if it is clogged it will not flow enough fuel under loads and car will bog down. if you have not changed in a while would be good ma ... Chevrolet Lumina APV

Diagnostic I have a 96 chevy cavalier 2.4 liter. I cannot get the pcm to recognize the diagnostic computer. I have used this handheld on a 96 regal so I know it will work on gm obd 2 computers. It will not even turn on when plugged into the cavalier however it works fine with a neon obd2 and the regal. Any tips to get it to work with this pcm.


Check your fuse panel for a fuse panel. You are probably not getting power to your diagnostics port on your vehicle. I do not remember which fuse the port is under but just look for the blown one. ... 1996 Chevrolet Cavalier

I have a warning ligt on in my Dec 1998 AU1 6 cylinder Falcon. It is the "exclamation mark" in the circle. There doesn't appear to be a reference to this light in the owner's manual. It seemed to come on after I idadvertently overfilled the power steering fluid reservoir. I drained some oil out, but the light is still on. I disconnected the + battery lead, but the ligt stayed on. I guess that the computer has its back up power supply. Do I need to have the engine computer interrogated to find ou


That amber circle & exclamation point(!) indicates that an exterior light bulb, e.g., turn signal, running lamp, has burned out. All these warning lights & symbols are illustrated and explained in the Owners Manual. \015\012 ... Ford Futura
  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
  • Use proper spelling and grammar
all rights reserved to the respective owners || www.carrestorationshop.com || Terms of Use || Contact || Privacy Policy
Load time: 2.8277 seconds