U 110c
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Joined: Jan 2023
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U 110c
Hello,
I need help. I replaced the original jeep wrangler TJ engine with the engine from the Chrysler-Neon 2.4 turbo. I adapted the electrical wiring to communicate the engine with the car (PCM), communicate with the TJ board (ICU). PCM it is a STAGE 1 update. The engine works perfectly, responds well to commands. Operation without error codes displayed on the cluster(DTC). The problem is that I turned on the check engine light. I checked and I have an error code that is not displayed on the ICU (it is not a DTC error) U 110C. The error code refers to the fuel level sensor, it is not connected to the PCM. At TJ the signal from the level sensor went to the PCM and it transmitted to the ICU via PCI now with this change in the PCM I have no signal input, at this variant, the signal goes to the ICU and from here to the PCM and BCM (the BCM is not at the TJ) and that's why I have the check engine light on. I want to eliminate this problem and have a warning only if I have a real engine operation problem.
Thanks for the support.
I need help. I replaced the original jeep wrangler TJ engine with the engine from the Chrysler-Neon 2.4 turbo. I adapted the electrical wiring to communicate the engine with the car (PCM), communicate with the TJ board (ICU). PCM it is a STAGE 1 update. The engine works perfectly, responds well to commands. Operation without error codes displayed on the cluster(DTC). The problem is that I turned on the check engine light. I checked and I have an error code that is not displayed on the ICU (it is not a DTC error) U 110C. The error code refers to the fuel level sensor, it is not connected to the PCM. At TJ the signal from the level sensor went to the PCM and it transmitted to the ICU via PCI now with this change in the PCM I have no signal input, at this variant, the signal goes to the ICU and from here to the PCM and BCM (the BCM is not at the TJ) and that's why I have the check engine light on. I want to eliminate this problem and have a warning only if I have a real engine operation problem.
Thanks for the support.
Last edited by VasileCECAN; Jan 14, 2023 at 11:28 AM. Reason: Thanks for the reply, correct I don't have BCM.
Grand Champion
Joined: Feb 2015
Posts: 7,435
Likes: 578
From what i read it works like this...
Do you mean you don't have the bcm?
The Fuel Level Sensor signal is a direct input to the Body Control Module (BCM). The BCM transmits the fuel level message to the Powertrain Control Module (PCM) over the Controlled Area Network (CAN) C bus. The Diagnostic Trouble Code (DTC) sets when the PCM either doesn't receive a bus message or receives an implausible bus message from the BCM.
(the BCM is not at the TJ)
Grand Champion
Joined: Feb 2015
Posts: 7,435
Likes: 578
With no BCM it cant send the info to the PCM, The PCM is not seeing anything and sets the code. Put the BCM back in or see if anything can be done with the pcm as far as software to disregard the fuel level.