Why is my PCM not working on my Jeep Wrangler?
You also lose communication with the OBDII data port & a scanner will not “communicate” & not read. The cause may be a failed PCM but also possible that one of the sensors or its wiring is shorted to ground.
Where do you run the ground in a Jeep Cherokee?
Run one to the rear, two to the dash area (if you have a lot of accessories), and one to the front. Each individual ground can be routed to a central location and all of the components in that general area can be grounded to it.
What should I do if my fuel pump is not grounding?
If the ignition system is equipped with a distributor, you can disconnect the high tension cable from the distributor cap and ground it to the engine (bolt or bracket) using a jumper wire. On other systems, you can remove the fuel pump fuse.
What causes bad ground connections on a car?
When checking ground connections, make sure the terminals attach to a non-painted surface. You want to connect to bare metal. Paint, corrosion, greasy surfaces, frayed or broken wires, and loose connections are the main cause of bad automotive grounds.
You also lose communication with the OBDII data port & a scanner will not “communicate” & not read. The cause may be a failed PCM but also possible that one of the sensors or its wiring is shorted to ground.
Where are the ground wire points on the JK?
Trying to find the ground wire locations on the jk. Does anyone know the location points of the grounding for the JK and where they are located? Specifically the fuse box location. I keep blowing fuses and I want to see if the ground is loose
Is the O2 sensor on a Jeep Wrangler NTK?
Hopefully the O2 sensors are NTK and not Bosch which is known to cause problems in our Jeeps. I’m having some problem as fireman posted earlier in the thread. Don’t have power to pin 2 orange wire. Have power to all fuses in fuse block.
What’s the traction control light on a 2014 Wrangler?
JKU windshield shade Quick release mirror 2014 Wrangler traction control light and check engine light on??? Discussion in ‘ Wrangler JK (2007-2017) ‘ started by Dlparker94, Mar 21, 2019 . hello, i recently purchased a 2014 wrangler and have taken it on a 10 hour trip to Texas.
What is a wiring diagram for a Jeep Wrangler?
2005 Jeep Wrangler Pcm Wiring Diagram – wiring diagram is a simplified good enough pictorial representation of an electrical circuit. It shows the components of the circuit as simplified shapes, and the power and signal contacts amid the devices.
What is pin 2 on a Jeep Wrangler?
This is the TJ forum so there may be differences with your XJ but I think pin 2 may be a dark blue/white wire & if so is probably the same as the 2004 TJs & should have power when the key is in the run & start positions. As to which fuse, I don’t know but if there is no power from that wire I would check the fuses.
Is there a wiring diagram for the PCM connectors?
Enter your ride HERE to be a part of JUNE’s Ride of the Month Challenge! Does anyone have, or know where I can find, a wiring diagram for the PCM connectors?
2005 Jeep Wrangler Pcm Wiring Diagram – wiring diagram is a simplified good enough pictorial representation of an electrical circuit. It shows the components of the circuit as simplified shapes, and the power and signal contacts amid the devices.
This is the TJ forum so there may be differences with your XJ but I think pin 2 may be a dark blue/white wire & if so is probably the same as the 2004 TJs & should have power when the key is in the run & start positions. As to which fuse, I don’t know but if there is no power from that wire I would check the fuses.
Enter your ride HERE to be a part of JUNE’s Ride of the Month Challenge! Does anyone have, or know where I can find, a wiring diagram for the PCM connectors?
What does the TCM stand for in a jeep?
TCM stands for Transmission Control Module. This computer system helps govern the shift timings, and by using sensor data from cruise control, throttle and traction control systems, it minimizes wheel spin, thus improving handling. TCMs can be found in dual clutch manual transmissions as well as electronically supervised automatics.
Why is my PCM not connecting to my scanner?
It takes a while to turn back on. Engine light blinking. Took to a mechanic. Scanner can’t establish connection with PCM on two different scanners. Now waiting for a 3rd scanner.
What to do if your PCM is not working?
Now these 2 problems combined would lead to think that there is some electrical connection problem with the PCM. I would disconnect the battery and then disconnect and clean the PCM connectors with electrical contact cleaner. Let them dry well before connecting again. KYB Gas-a-Just shocks / Transgo reprogramming shiftkit.
What’s the difference between ECM and PCU in a jeep?
The Jeep Engine Control Module, known as the PCM ( Powertrain Control Module) ECU ( Electrical Control Unit ) or to simply it put the Automotive Engine Computer . Confusing right? If you would like to know more about their differences you can read up on our previous post ” Difference between ECM, ECU & PCM ” which we covered it in details.
It takes a while to turn back on. Engine light blinking. Took to a mechanic. Scanner can’t establish connection with PCM on two different scanners. Now waiting for a 3rd scanner.
What happens if I Reset my Jeep ECM?
To finish off this post , here are a couple of things you should keep in mind. Resetting your Jeep ECM will not have any effect on your vehicle’s mileage, Resetting it should not cause any issues between your other module so feel free to this as many time as you want if you’re trying to diagnose a problem with your car. For good measure.
To finish off this post , here are a couple of things you should keep in mind. Resetting your Jeep ECM will not have any effect on your vehicle’s mileage, Resetting it should not cause any issues between your other module so feel free to this as many time as you want if you’re trying to diagnose a problem with your car. For good measure.
How to check engine code on Jeep YJ?
Using the ignition switch, at no point do you actually start the Jeep: Start with the ignition in the OFF position, Turn the key to ON, OFF, ON, OFF, ON stop .. leave the key in the ON position (Complete this sequence in under 5 seconds).
How can I tell if my PCM is working?
If the fuse is good see if you are getting 12v power to the fuse which comes from the ignition switch. The same contacts probably also powers other fuses possibly including the one for the cluster which might account for the gauges not coming up that you also mentioned.
How do you reset the ECM on a jeep?
The following sequence is used to reset the ECM or PCM as it is sometimes refered too. 1. Disconnect the battery by removing the Negative battery cable (This will ensure that any possibility of grounding the power side to the vehicle [or yourself – think wedding ring] does not happen.) 2. Disconnect the Positive battery cable 3.
How do you reset the PCM on a GM car?
When the PCM detects a problem with one or more of the vehicle’s components or systems it stores a trouble code in its internal memory and illuminates a malfunction indicator light (MIL) on the dashboard. An automotive scan tool is required to clear the codes and reset the PCM. Shift the vehicle’s transmission into park or first gear.
What should I do if my PCM is not working?
The reason this is important is that low voltage can cause certain sensors to fail, depriving your PCM of the input it needs to make correct adjustments. If your battery is fully charged and there’s no visible rust, your next step will be to plug an OBD or OBD II code scanner into your vehicle and see if the PCM is producing any OBD error codes.
Using the ignition switch, at no point do you actually start the Jeep: Start with the ignition in the OFF position, Turn the key to ON, OFF, ON, OFF, ON stop .. leave the key in the ON position (Complete this sequence in under 5 seconds).