Medium and Heavy Trucks
Have Truck Repair Questions? Ask an Expert
Hi I'm Wayne
I will help you with this
give me a few to look it up
The Throttle Actuator Control (TAC) system uses vehicle electronics and components to calculate and control the position of the throttle blade. This eliminates the need for a mechanical cable attachment from the accelerator pedal to the throttle body. This system also performs the cruise control functions as well. The TAC system components include, but are not limited to the following: - The accelerator pedal position (APP) sensors - The throttle body - The powertrain control module (PCM) Each of these components interface together to ensure accurate calculations and control of the throttle position (TP). Throttle Body Assembly The throttle body for the throttle actuator control (TAC) system is similar to a conventional throttle body with several exceptions. One exception being the use of a motor to control the throttle position instead of a mechanical cable. Another exception is the throttle position (TP) sensor. The TP sensor is mounted in the throttle body assembly. The TP sensor is 2 individual TP sensors within the throttle body assembly. Two separate signal, low reference, and 5-volt reference circuits are used to connect the TP sensors and the powertrain control module (PCM). TP sensor 2 signal voltage increases as the throttle opens. TP sensor 1 signal voltage decreases as the throttle opens.I hope this helps you
Hi. If this helped you
Please rate my answer 3 or more stars.
That is the only way I get credit for the question
or the money you paid stays at JA and I get nothing for my time.
If you need more info use the REPLY button
Not the Poor/Bad service.
I am sorry
I do not have that code
don't reply or rate me
question locks back to me
Hi my name is***** will be glad to help. Give me some time to look up your code information. Also if interested I can help with a troubleshooting manual for this engine as well.
P1514Code numberP1514Fault code descriptionEmission control system Diesel Exhaust Fluid (DEF) dosing fault detectedFault code information1 trip MIL 3 drive cycle recovery Readiness group – NoneFreeze frame type - CrankcaseDescription of component(s)Not available/required for this codeLocation of component(s)Not available/required for this codeDiagnostic conditionNot available/required for this codeSet condition of fault codeThis DTC is activated by another active DTC.Reset condition of fault codeThis DTC becomes inactive as soon as the DTC from which it originates has become inactive.Electrical diagram(s)Not available/required for this codeTechnical dataNot available/required for this codePossible causesDo not troubleshoot this DTC since it originates from another active DTC.Additional informationP1514 is a diesel engine fluid operator interface (DEFOI) tampering category trouble code, activated by the occurrence and persistence of another code.Diagnostic Step-by-StepThe ignition should always be in the OFF position when connecting or disconnecting electrical components to reduce the likelihood of damage to the components. This troubleshooting procedure is based on the assumption that supply power and ground to the PMCI are functioning properly. Disconnecting the PMCI connectors during the troubleshooting process will result in multiple errors. Specific electrical component information and pin out locations are provided in this procedure as a reference only. Always refer to the technical data sections in Rapido for the most up-to-date changes. It is necessary to use DAVIE to clear all current trouble codes from the PCI and EAS-3 ECUs, and then run the Quick Check to identify a change in fault status. This DTC can be set as a result of multiple failure modes. For proper fault isolation, complete all troubleshooting steps in the sequence provided.Step 1. Investigate Related Trouble Codes2013 PACCAR MX Diagnostic Service Manual 282 | P a g eP1514 is a diesel engine fluid operator (DEFOI) tampering category trouble code, activated by the occurrence and persistence of another code. Step P1514_1.A Investigate related trouble codes SRT:To resolve P1514, investigate any of these related active codes:P3808; P3809; P3810; P3812; P3813; P3814; P3830; P3844; P3845; P3846; P3847; P3848; P3856; P3857; P3858; P3859; P3862; P3890; P3904; P3905; P3909; P3912; P3978; P3980; P3985; P3986; P3994; P3996Step 2. Repair Verification CyclesPerform these repair verification cycles following any corrective actions taken, to confirm that this trouble code is no longer present.Step P1514_2.A Verification Drive Cycle: Start-up SRT:With the brakes set, start the engine and allow it to run at idle for 2 minutes.Step 3. Contact PACCAR Engine Support Center Step P1514_3.A Contact PACCAR Engine Support Center SRT:For further assistance in diagnosing this issue or for confirmation prior to the replacement of suspect components, contact the PACCAR Engine Support Call Center at 1-***-***-****.
Check for other faults as this is an informational code as you see that results from another code or problem. Let me know
How can it not be correct when I took it out of the MX 13 manual
Click this link and check for yourself. I took a screen snapshot
Click below.... this is the manual I have
That is because this fault is initiated by another fault and if you have this code without another fault it points to a software issue. Reflash and update your ECM software to reset it to factory settings.
"Possible causesDo not troubleshoot this DTC since it originates from another active DTC.Additional informationP1514 is a diesel engine fluid operator interface (DEFOI) tampering category trouble code, activated by the occurrence and persistence of another code"
Reset and update the ECM software and let me know if you need further help.
Hi, Did you get this resolved?If so, Please take a moment to rate as that is how the site credits my time helping on the site or let me know if you need more help. 5 star and bonuses are always greatly appreciated.