2006 DODGE RAM SRT-10 engine

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. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).
Diagnostic Test
1.ACTIVE DTC
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 tem-
peratures, 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.
Is the DTC active at this time?
Ye s>>
Go To 2
No>>
Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
2.THROTTLE PLATE STUCK
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 Throttleto stick.
Manually open and close the throttle plate using your hands.
Does the Throttle Plate move?
Ye s>>
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 com-
plete, use a scan tool and select the ETC RELEARN function.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

3.(K447) ETC POSITIVE CIRCUIT OPEN
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.
Is the resistance below 5.0 ohms?
Ye s>>
Go To 4
No>>
Repair the open in the (K447) ETC Positive circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
4.(K448) ETC NEGATIVE CIRCUIT OPEN
Measure the resistance of the (K448) ETC Negative circuit from the
Throttle Body harness connector to the appropriate terminal of special
tool #8815.
Is the resistance below 5.0 ohms?
Ye s>>
Go To 5
No>>
Repair the open in the (K448) ETC Negative circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)

5.(K447) ETC POSITIVE CIRCUIT SHORTED TO GROUND
Measure the resistance between a known good ground and the (K447)
ETC Positive circuit at the appropriate terminal of special tool #8815.
Istheresistancebelow100ohms?
Ye s>>
Repair the short to ground in the (K447) ETC Positive cir-
cuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 6
6.(K448) ETC NEGATIVE CIRCUIT SHORTED TO GROUND
Measure the resistance between a known good ground and the (K448)
ETC Negative circuit at the appropriate terminal of special tool #8815.
Istheresistancebelow100ohms?
Ye s>>
Repair the short to ground in the (K448) ETC Negative cir-
cuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 7
7.ETC MOTOR
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.
Is the resistance between 2.5 and 25 ohms at closed throttle?
Ye s>>
Go To 8
No>>
Replace the Throttle Body Assembly. Disconnect the Battery
when replacing the Throttle Body Assembly. After installa-
tion is complete, use a scan tool and select the ETC
RELEARN function.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)

8.PCM
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.
Were there any problems found?
Ye s>>
Repair as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Replace and program the Powertrain Control Module per Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

When Monitored:
Ignition on and battery voltage greater than 10 volts.
Set Condition:
Just after key on, the throttle is opened and closed to test the system. If the TP Sensor does not return to
Limp Home Position at the end of this test, this DTC will set. One trip fault and the code will set within 5
seconds. ETC light is flashing.
Possible Causes
THROTTLE PLATE STUCK ABOVE LIMP HOME POSITION
TP SENSOR NO.1 AND TP SENSOR NO.2 BOTH READ 2.5 VOLTS
(K447) ETC POSITIVE CIRCUIT SHORTED TO BATTERY VOLTAGE
(K447) ETC POSITIVE CIRCUIT OPEN
(K448) ETC NEGATIVE CIRCUIT OPEN
(K447) ETC POSITIVE CIRCUIT SHORTED TO GROUND
(K448) ETC NEGATIVE CIRCUIT SHORTED TO GROUND
PCM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).
Diagnostic Test
1.ACTIVE DTC
NOTE: Maximum engine speed could be reduced while this fault is active, it just depends where the throttle
gets stuck.
Ignition on, engine not running.
NOTE: The PCM tests the ETC Motor by opening and closing the Throttle Plate before starting the engine.
If during this test the Throttle plate does not return to the closed positionthisDTCsets.
With a scan tool read DTCs.
NOTE: Diagnose any TP Sensor or 5-Volt Supply DTCs before continuing.
Is the DTC active at this time?
Ye s>>
Go To 2
No>>
Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
2.THROTTLE PLATE STUCK OPEN
Turn the ignition off.
NOTE: The PCM tests the ETC Motor by opening and closing the Throttle Plate before starting the engine.
If during this test the Throttle plate does not return to the closed positionthisDTCsets.
Remove the Air Cleaner Assembly from the Throttle Body.
Check for any signs of a foreign material causing the Throttle to remain open.
Using a scan tool actuate the ETC Motor.
Does the Throttle Plate move?
Ye s>>
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 com-
plete, use a scan tool and perform the ETC RELEARN function.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

3.TP SENSOR NO.1 AND TP SENSOR NO.2 BOTH EQUAL 2.5 VOLTS
With a scan tool, perform the Throttle Follower test while reading both TP Sensor voltage readings.
Are both TP Sensor readings stuck at 2.5 volts?
Ye s>>
Check the TP Sensor Signal circuits for excessive resistance, being shorted to each other, or shorted to
the Sensor Return circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 4
4.(K447) ETC POSITIVE CIRCUIT SHORTED TO BATTERY VOLTAGE
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 the diagnostics.
Ignition on, engine not running.
With a 12-volt test light connected to ground, probe the (K447) ETC
Positive circuit at the appropriate terminal of special tool #8815.
Does the test light illuminate brightly?
Ye s>>
Repair the short to battery voltage on the (K447) ETC Pos-
itive circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 5
5.(K447) ETC POSITIVE CIRCUIT OPEN
Turn the ignition off.
Measure the resistance of the (K447) ETC Positive circuit from the
Throttle Body harness connector to the appropriate terminal of special
tool #8815.
Is the resistance below 5.0 ohms?
Ye s>>
Go To 6
No>>
Repair the open in the (K447) ETC Positive circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)

6.(K448) ETC NEGATIVE CIRCUIT OPEN
Measure the resistance of the (K448) ETC Negative circuit from the
Throttle Body harness connector to the appropriate terminal of special
tool #8815.
Is the resistance below 5.0 ohms?
Ye s>>
Go To 7
No>>
Repair the open in the (K448) ETC Negative circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
7.(K447) ETC POSITIVE CIRCUIT SHORTED TO GROUND
Measure the resistance between a known good ground and the (K447)
ETC Positive circuit at the appropriate terminal of special tool #8815.
Istheresistancebelow100ohms?
Ye s>>
Repair the short to ground in the (K447) ETC Positive cir-
cuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 8

8.(K448) ETC NEGATIVE CIRCUIT SHORTED TO GROUND
Measure the resistance between a known good ground and the (K448)
ETC Negative circuit at the appropriate terminal of special tool #8815.
Istheresistancebelow100ohms?
Ye s>>
Repair the short to ground in the (K448) ETC Negative cir-
cuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 9
9.PCM
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.
Were there any problems found?
Ye s>>
Repair as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Replace and program the Powertrain Control Module per Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)