Service ETC (Electronic Throttle Control) what to do?

[DylanM]

@kridd
Check that you don't have a wire harness resting on the EGR flange at the top/front of your DPF. It seems that this can cause a variety of electrical issues and warnings to pop up on the dash when high heat from the exhaust gets into the harness. See the following link for some pictures of where to look: https://www.jlwranglerforums.com/forum/threads/“service-shifter”-wire-harness-issue.68876/

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[kridd]

Thanks for the suggestion @DylanM, I'll get under and check... I have my doubts as it has only happened when towing but who knows!

 

[kridd]

@kridd
Check that you don't have a wire harness resting on the EGR flange at the top/front of your DPF. It seems that this can cause a variety of electrical issues and warnings to pop up on the dash when high heat from the exhaust gets into the harness. See the following link for some pictures of where to look: https://www.jlwranglerforums.com/forum/threads/“service-shifter”-wire-harness-issue.68876/

I climbed under the jeep today and couldn't pinpoint where this was using the photo, so I have a couple follow-up questions. Hopefully you don't mind @DylanM

1. I have a '23 Jeep Gladiator Overland Diesel >> This should be the same layout?
2. Do I need to remove the wheel well cover (passenger side)to see this connection?
3. I followed the exhaust stack and could see this... I was lying under the car looking towards the front, should I come at it the other direction, lie in the direction facing the back?

Its -20ºC outside so I was trying to do this in my full garage today that always leads to challenges with orientation! Thanks in advance, appreciate the clarification!

 

[DylanM]

1. I have a '23 Jeep Gladiator Overland Diesel >> This should be the same layout?
2. Do I need to remove the wheel well cover (passenger side)to see this connection?
3. I followed the exhaust stack and could see this... I was lying under the car looking towards the front, should I come at it the other direction, lie in the direction facing the back?

Its -20ºC outside so I was trying to do this in my full garage today that always leads to challenges with orientation! Thanks in advance, appreciate the clarification!

1. I'm not aware of any changes to the layout for a '23 model, it should be the same AFAIK
2. It's not necessary to remove the passenger front fender liner to see the EGR pipe connection.
3. For me, I slide lengthwise fully under the Jeep from the passenger side, just behind the front wheel, head toward the front of the vehicle, then skootch toward the front just a bit. Looking up just inboard of the chassis rail you'll see the DPF in all its wrapped up hot potato-looking glory. Along the side of the DPF facing the chassis rail you'll see a roughly 2" diameter bare/unshielded pipe that runs forward and upward to just above the DPF where it curves upward -- that is the EGR pipe you're looking for. Follow the pipe upward to where it forms a flange and bolts to another pipe leading up to the engine -- that is the flange you're specifically checking to see if there is a wire harness resting on it. About the only way to actually get a finger on the flange and wire harness is to reach up through the gap between the fender liner and the chassis, hand over top of the wire bundles atop the chassis rail, then inward while looking up from underneath. The harness in question goes to the upper of the two large wire connectors located at the rear of the passenger wheel well.

 

[kridd]

1. I'm not aware of any changes to the layout for a '23 model, it should be the same AFAIK
2. It's not necessary to remove the passenger front fender liner to see the EGR pipe connection.
3. For me, I slide lengthwise fully under the Jeep from the passenger side, just behind the front wheel, head toward the front of the vehicle, then skootch toward the front just a bit. Looking up just inboard of the chassis rail you'll see the DPF in all its wrapped up hot potato-looking glory. Along the side of the DPF facing the chassis rail you'll see a roughly 2" diameter bare/unshielded pipe that runs forward and upward to just above the DPF where it curves upward -- that is the EGR pipe you're looking for. Follow the pipe upward to where it forms a flange and bolts to another pipe leading up to the engine -- that is the flange you're specifically checking to see if there is a wire harness resting on it. About the only way to actually get a finger on the flange and wire harness is to reach up through the gap between the fender liner and the chassis, hand over top of the wire bundles atop the chassis rail, then inward while looking up from underneath. The harness in question goes to the upper of the two large wire connectors located at the rear of the passenger wheel well.

Big thank you @DylanM, I'll let you know how it goes... Greatly appreciate the extra info!

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