I have a 2005 dodge cummins diesel. I replaced three injectors on my truck after starting truck and driving it down the road I parked it went house came back out later and truck will not start. since than I have cleaned all battery ends, bled all the injectors, check all connections. It will not put another code while trying to start truck any ideas
truck is stock no upgrades, checked all basics has fuel pressure, intake heater works. had p2509 code in it
when I drove truck after putting in injectors there was not a code, but when I went back out to start truck p2509 code was in it
yes I have scanner, but it is cheap one
start simple - separate and check batteries, as one may be bad, ck their connections and terminals, tight secure no corrosion, then charging system. Be sure they are both charged up. iF its not that simple will need to check wiring - do you have a DVOM?
I have already done this . Do not know what DVOM IS
dvom digital volt ohm meter Here's what the P2509-ECM/PCM POWER INPUT SIGNAL INTERMITTENT The ECM receives a constant voltage from the batteries through the unswitched battery wires that are connected directly to the positive (+) battery post. The ECM receives switched battery input through the vehicle Ignition Switch wire when the vehicle is turned on. The ECM will illuminate the MIL lamp immediately after the diagnostic runs and fails. During the time the customer may experience some performance effects such as engine dying or hard starting. Fault information, trip information could be inaccurate. The ECM will turn off the MIL lamp after the diagnostic runs and passes in 4 consecutive drive cycles. When Monitored: Continuous - key on or key off. Set Condition: Loss of voltage detected at the ECM for a calibrated amount of time. Supply voltage to the PCM fell below 6.2 volts momentarily or the ECM was not allowed to power down correctly (retain battery voltage for 30 seconds after key off). Possible Causes POOR CONNECTIONS AT THE BATTERIES LOW BATTERY VOLTAGE OPEN FUSED B+ TO ECM OPEN GROUND CIRCUIT BATTERY + SHORTED TO OTHER CIRCUITS RETURN CIRCUIT SHORTED BATTERY + SHORTED TO GROUND DEFECTIVE BATTERY Here are some things you can do to troubelshoot it. The first thing you should do if this is the first time seeing the code is clear the code and see if it wasn't just a hiccup. If it comes back then try the following: 1. POOR CONNECTIONS AT THE BATTERIES Visually inspect the wiring at the battery for damaged wires, or corrosion. 2. LOW BATTERY VOLTAGE/ DEFECTIVE BATTERY Check for dead cells/low voltage Charge/Replace the batteries 3. OPEN FUSED B+ TO ECM Turn the ignition off. Disconnect the ECM harness connectors. Turn the ignition on. Measure the resistance between the positive battery post and the ECM supply circuits. Resistance should be less then 10 Ohms If not, Repair the open fused B+ circuit to ECM. 4. OPEN GROUND CIRCUIT Measure the resistance between the negative battery post and the ECM ground circuits. The resistance should be less than 10 Ohms If not, repair the open ground circuit. 5. BATTERY + SHORTED TO OTHER CIRCUITS Measure the resistance between the ECM supply circuits and all other circuits in the ECM harness connector, except other supply circuits. The resistance should be greater than 100k Ohms? If not, repair the battery circuit short to other circuits in engine harness. 6. RETURN CIRCUIT SHORTED Measure the resistance between the ECM return circuits and all other circuits in the ECM harness connector, except other return circuits. The resistance should be greater than 100k Ohms? If not, repair or replace the engine harness. 7. BATTERY + SHORTED TO GROUND Measure the resistance between the ECM B+ supply circuits and ground. The resistance should be greater than 100k Ohms? If not, Repair Battery + shorted to ground.
I have got too number 5 checked ohms it says ohms should be over 100k, the only contact that has over 100k ohms is post 28 all others are open
having trouble adding pin outs- will add ASAP
Thanks
[quote="kev2"]only that 1 code - do you have a scanner? I am thinking you disconnected battery to check and clean, then the code appeared? vehicle is stock no BS chips, remote start etc? Hello I have a 2006 Ram 2500 it has a 5.9 Cummins it will not start, the code is P2509 I installed 2 new batteries in the truck after I installed the batteries and clean all the terminals made sure they were real clean the truck started and ran fine for about 5 minutes, the next day I started the truck it ran for about 5 seconds then turned off, I started it again and same thing, the third time it started while it was running I ran it up to 1500 RPMS turned off the key and on while the engine was running and it ran for a few minutes then it turned off and now will not start, I read others that had the same problem and I did every thing that was suggested I checked all the wires checked the voltage to the ECM I located the ignition wire it had 12.5 volts I located about 4 total all had the same except 2 that had 10.5 volts not sure if that is correct so I stopped, the harness looks to be good the truck has less then 95K miles on it. Please Help.
vehicle is stock no BS chips, remote start etc? Hello I have a 2006 Ram 2500 it has a 5.9 Cummins it will not start, the code is P2509 I installed 2 new batteries in the truck after I installed the batteries and clean all the terminals made sure they were real clean the truck started and ran fine for about 5 minutes, the next day I started the truck it ran for about 5 seconds then turned off, I started it again and same thing, the third time it started while it was running I ran it up to 1500 RPMS turned off the key and on while the engine was running and it ran for a few minutes then it turned off and now will not start, I read others that had the same problem and I did every thing that was suggested I checked all the wires checked the voltage to the ECM I located the ignition wire it had 12.5 volts I located about 4 total all had the same except 2 that had 10.5 volts not sure if that is correct so I stopped, the harness looks to be good the truck has less then 95K miles on it. Please Help.[/quote]
there is a reflash you will need a dealer for this TSB #18-001-07.... that and a weird problem with fan clutch 6way connector- disconnect and see if it starts - if yes then fan clutch asssy has failed - I still recommend seeing dealer for that and reflash...
kev2 wrote: there is a reflash you will need a dealer for this TSB #18-001-07.... that and a weird problem with fan clutch 6way connector- disconnect and see if it starts - if yes then fan clutch asssy has failed - I still recommend seeing dealer for that and reflash...
I tried that I disconnect the fan and it still will not start. what is a reflash?
it sounds like the ECM is bad.
I also removed the fuel filter to see if fuels is pumping, I did replace the fuel pump in the tank. sometimes when I turn the key on no fuel pumps and if I keep turning the key on and off it will come on and start pumping the fuel, is that common?
Can someone tell me where the fuse is located for the ECM B+?
only that 1 code - do you have a scanner? I am thinking you disconnected battery to check and clean, then the code appeared? vehicle is stock no BS chips, remote start etc? start with basics, fuel pressure, glow plug check.