2012/22 Classic wiring diagrams

[HK1837]

Hi guys

Does anyone have any idea (or wiring diagrams) of where the wires from the RH side O2 sensor in front of the Cat goes? Straight to the ECU? What pins?

The Ram is 4 years old now, its had a P0152 code on and off since new. Been back to dealer three times, twice they've changed the sensor, fault comes back immediately. I'm sick of taking it there, paying for Uber home and back again only to find they cannot find it. Happened again today. Will just be a bad connection somewhere or busted wire. Once I have a diagram I reckon I'll find it inside 2 hours.

 

[Mpgrimm2]

What truck is this for exactly?

Year:
Model (1500/2500):
4th Gen it new body style 5th Gen?
Is your 4th Gen truck a “Classic” with 5 Lug wheels?
What engine setup?

 

[HK1837]

Sorry, December 2021 Classic. Hemi 5.7 Express 1500 Quad cab.

I'll go fault finding once I know where exactly the "other" end of the wiring goes for O2 sensor 2/1 (RH bank, in front of the Cat).

 

[HK1837]

I found this link in the 5th Gen forums. It doesn't specifically state its for Classic or 5th Gen. I guess it will get me close. Looks like pins 41 and 42 on the PCM.

RAM 1500 Hemi 5.7 2021 PCM wiring diagram

Hello friends. I'm looking for a PCM wiring diagram for RAM 1500 Hemi 5.7 2021. Can anyone help with this?

www.ramforum.com

 

[Ken226]

This is from my 2013-2016 factory service manual

 

[Mpgrimm2]

I have the 18 ram 1500 diagram and it should be the same as what Ken posted (& 19-24 classic DS) ...

You can also use the schematics with the Mopar Connector Repair site...

Mopar Connection Repair Kit

connectorrepairkit.mopar.com

.

 

[HK1837]

Thank you. That is a little different to the one in the link I posted above. I'll have to get in there are see if it is like either of them.

They both show pin 4 on sensor 2/1 as Dark Blue & Green with wire number K43 going to pin 41 on the PCM. SO n theory that should be right.
They both show pin 3 on sensor 1/1 and 2/1 shared and labelled K902 with Brown & Dark Green wire. On the above diagram this goes to pin 19, but on the 2021 diagram it shows pin 40. The wire colours will hopefully give it up.