2012年6月17日 · Is there a way or things to test/check to see if the pcm or ecm is bad? i have gone through all my fuses and none are blown and i still have no lift pump power.

2009年1月19日 · Jumper cables are faster for a test ground. If you were at the dealer you should have had them throw the scanner on it. Seeing as how you didn't. Cycle the key three times. Leave it on the third time. This will tell the PCM to do a self diagonstic's. The check engine light will flash the codes. All codes are a 2 digit number. So count the flashes.

2018年9月22日 · Using the key trick, I get the following error codes in the PCM: P0122, P1693. The ECM has a bunch of codes, simply because the VP44 and the APPS are both non-existent on my truck.

2022年4月25日 · i followed the troubleshooting proceduring in the Mopar Service manual, i verified Power, ground, ignition signals, and Can bus continuity to the TIPM. All test good, per the Mopar manual at this point it recommend replacing the PCM.

2010年12月18日 · Testing the ESS with an ohm meter tells you nothing, you need an oscilloscope. The wiring goes to the PCM behind the airfilter on the firewall. I've never tested a ESS or VSS, just replace them if the wiring looks intact and the problem persists. Both are available at the auto parts store.

2011年10月28日 · Take an ohm meter and check resistance between the engine block. the ECM itself, the body etc,,, You might do the resistance checks before removing and cleaning to help with troubleshooting.

2024年11月10日 · The Powertrain Control Module (PCM) illuminates the MIL immediately after the diagnostic runs and fails. The ETC lamp will also flash. During this time the customer will be in a limp mode. The PCM will turn off the MIL after the diagnostic runs and passes in four consecutive drive cycles. When Monitored: With the ignition on, PCM powered.

2016年6月7日 · To test if a current issue is AC related, there are two things you can do. First when it is acting up, unplug the little two wire on the back of the alternator and run it off of the batteries a while.

2007年5月9日 · well hooked up an ecm from an 06 and poof connection to ecm, fuel pump turned on PRNDL lit up on the cluster sooooo the initial test on the ecm was incorrect! now to get a new ecm and back to the dealer for programming!

2013年4月26日 · I don't mind spending the money for a PCM, but i want to KNOW its the PCM before i buy it. Is there anything else i need to look at before replacing this, or is there a voltage/OHM test for the PCM?:confused013: