alright guys what would cause a P2110 code to pop up?

P2110 Throttle Actuator Ctrl Sys-Forced Limited RPM

Could this have been caused by the ported TB? There was NO CEL with this code. Did the key trick to check for the code after the truck still didn't feel quite right when I put the stock TB back on.

 

Diagnose your heart out... lol but personally I would clear the code and not worry about it unless in comes back...all info from alldata.


WHEN MONITORED
Ignition on and ETC motor is working.

SET CONDITION
When the PCM requests to limit engine speed if PWM is too high for 20.5 seconds and before P2118 sets. One trip fault and the code will set within 5 seconds . ETC light is illuminated.

POSSIBLE CAUSES

• Throttle plate stuck
• (K447) ETC positive circuit open
• (K448) ETC negative circuit open
• (K447) ETC positive circuit shorted to ground
• (K448) ETC negative circuit shorted to ground
• ETC motor
• PCM

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

Diagnostic Test


1.ACTIVE DTC</B>
Ignition on, engine not running.
With a scan tool read DTCs.
In the Freeze Frame data, look at the temperature at which the fault occurred. If it occurred in extreme cold temperatures, Icing of the throttle body may have caused this code to set.
NOTE: Diagnose any TP Sensor faults, 5-Volt Supply faults, and Battery Voltage High or Low DTCs before continuing.

Q: Is the DTC active at this time?

YES: Go To 2
NO: Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Perform the POWERTRAIN VERIFICATION TEST. See: Verification Tests\Powertrain Verification Test


2.THROTTLE PLATE STUCK</B>
Turn the ignition off.
Remove the Air Cleaner Assembly from the Throttle Body
Check for any signs of a foreign material (ice or dirt) causing the Throttle to stick.
Manually open and close the throttle plate using your hands.
Q: Does the Throttle Plate move?

YES: Go To 3
NO: Remove the debris if possible or replace the Throttle Body Assembly if signs of physical damage are present. Disconnect the Battery when replacing the Throttle Body Assembly. After installation is complete, use a scan tool and select the ETC RELEARN function. Perform the POWERTRAIN VERIFICATION TEST.

3.(K447) ETC POSITIVE CIRCUIT OPEN</B>

Turn the ignition off.
Disconnect the Throttle Body harness connector.
Disconnect the C2 PCM harness connector.

CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.

Measure the resistance of the (K447) ETC Positive circuit from the Throttle Body harness connector to the appropriate terminal of special tool #8815.

Q: Is the resistance below 5.0 ohms?

YES: Go To 4
NO: Repair the open in the (K447) ETC Positive circuit. Perform the POWERTRAIN VERIFICATION TEST.


4.(K448) ETC NEGATIVE CIRCUIT OPEN</B>

Measure the resistance of the (K448) ETC Negative circuit from the Throttle Body harness connector to the appropriate terminal of special tool #8815.

Q: Is the resistance below 5.0 ohms?

YES: Go To 5
NO: Repair the open in the (K448) ETC Negative circuit. Perform the POWERTRAIN VERIFICATION TEST.

5.(K447) ETC POSITIVE CIRCUIT SHORTED TO GROUND</B>

Measure the resistance between a known good ground and the (K447) ETC Positive circuit at the appropriate terminal of special tool #8815.

Q: Is the resistance below 100 ohms?

YES: Repair the short to ground in the (K447) ETC Positive circuit. Perform the POWERTRAIN VERIFICATION TEST.NO: Go To 6


6.(K448) ETC NEGATIVE CIRCUIT SHORTED TO GROUND</B>

Measure the resistance between a known good ground and the (K448) ETC Negative circuit at the appropriate terminal of special tool #8815.

Q: Is the resistance below 100 ohms?

YES: Repair the short to ground in the (K448) ETC Negative circuit. Perform the POWERTRAIN VERIFICATION TEST. NO: Go To 7


7.ETC MOTOR</B>


NOTE: Take the following measurement using special tool #8815 to avoid possible damage to the Throttle Body harness connector.

Measure the resistance of the ETC Motor between the (K447) ETC Positive circuit and the (K448) ETC Negative circuit at the appropriate terminals of special tool #8815.

Q: Is the resistance between 2.5 and 25 ohms at closed throttle?

YES: Go To 8
NO: Replace the Throttle Body Assembly. Disconnect the Battery when replacing the Throttle Body Assembly. After installation is complete, use a scan tool and select the ETC RELEARN function. Perform the POWERTRAIN VERIFICATION TEST.


8.PCM</B>
NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits.

Q: Were there any problems found?

YES: Repair as necessary. Perform the POWERTRAIN VERIFICATION TEST. NO: Replace and program the Powertrain Control Module per Service Information. Perform the POWERTRAIN VERIFICATION TEST.





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