What should the voltage be on a Jeep Grand Cherokee?
With the car running, the voltage across the battery should be 14.5. Anything much lower and it will take to long to charge the battery. Turn on the lights and the air conditioning. The voltage should remain the same. If not, replace the alternator. To correct a check engine light, an OBD II code scanner will be needed.
Why does my Jeep Grand Cherokee have no power?
If there is no power, the problem is between the battery and relay. If there is power at the relay, have a helper hold the key in the start position. There should now be power to a second terminal. If there is no power, the problem is in the ignition switch or with the security system.
How can I tell if my Jeep Grand Cherokee battery is bad?
Check the battery for 12.5 volts. If it has less, charge it or jump it and if the car starts check across the battery to see if there are about 14.5 volts with the engine running. If not the alternator is bad. If it has the proper voltage, the battery is bad. If the battery was good, check the fuses and the starter relay.
How to troubleshoot a no start Jeep 4.0L?
Go to: No Start 2: Checking Fuel. CASE 2: Spark was NOT present in all of the cylinders (DISTRIBUTOR TYPE): This test result tells you without a doubt that the no start condition of your 4.0L equipped Jeep is due to a malfunction in the ignition system. Now, with no spark in any of the engine cylinders, this what I would suggest:
Is there a no start Jeep Grand Cherokee?
I have a 2000 Jeep Grand Cherokee with a 4.0L with a no start, no spark condition. I also have a fuel and voltage gauge that is NOT reading correctly, however I did do a gauge check, hold in the trip reset and turn the key on and they all worked.
Why does my Jeep Cherokee crank but not start?
Re: Cranks but will not start, no PCM function. You still don’t have spark or injector pulse; this should be looked into first. It still could be a bad crank sensor. The crank sensor sends the pulse to the PCM and then it sends the signals to the proper areas like spark, fuel relay, and injector pulse.
Why does my Jeep Cherokee have no spark?
I have no communication to the computer with a scanner, no check engine light, no 5 v reference, no spark. I have tried to manually pull codes with the key. The dealer says that it does not have an immobilizer by the VIN number. I have power and grounds to the PCM connectors.
Where is the ignition switch located on a Jeep Cherokee?
When the ignition switch is in either the START or RUN position, it connects circuit A1 from fuse 8 in the Power Distribution Center (PDC) to circuit A21. Circuit A21 powers circuit F99 through PDC fuse 18.