Diagnostic Test

1) ACTIVE DTC
NOTE: When this DTC is Active the engine speed, torque, and vehicle speed are limited to a Limp in mode.

NOTE: If a 5-Volt supply DTC has also set, diagnose the 5-Volt DTC before continuing.

Ignition on, engine not running.

With a scan tool, select View DTCs.

Is the DTC Active at this time?

Yes
1. Go to 2).
No
1. Go to 7).
2) THROTTLE POSITION SENSOR
Turn the ignition off.

Disconnect the Throttle Body Assembly harness connector.

Ignition on, engine not running.

With the scan tool monitor the TP Sensor No. 2 voltage.

Is the voltage below 0.5 volt?

Yes
1. Disconnect the Battery when replacing the Throttle Body Assembly. Replace the Throttle Body Assembly. After installation is complete, with the scan tool select the ETC RELEARN function.
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. Go to 3).
3) (K122) TP SENSOR NO. 2 SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE

Fig 1: Checking TP Sensor No. 2 Signal Circuit For Short To Voltage
Courtesy of CHRYSLER LLC

Turn the ignition off.

Disconnect the C2 PCM harness connector.

Ignition on, engine not running.

Measure the voltage on the (K122) TP Sensor No. 2 Signal circuit at the Throttle Body harness connector.

Is the voltage above 0 volts?

Yes
1. Repair the short to battery voltage in the (K122) TP Sensor No. 2 Signal circuit.
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. Go to 4).
4) (K122) TP SENSOR NO. 2 SIGNAL CIRCUIT SHORTED TO THE (F855) 5-VOLT SUPPLY CIRCUIT

Fig 2: Checking TP Sensor No. 2 Signal Circuit For Short To 5-Volt Supply Circuit
Courtesy of CHRYSLER LLC

Measure the resistance between the (K122) TP Sensor No. 2 Signal circuit and the (F855) 5-volt Supply circuit at the Throttle Body harness connector.

Is the resistance below 100 ohms?

Yes
1. Repair the short between the (K122) TP Sensor No. 2 Signal circuit and the (F855) 5-volt Supply circuit.
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. Go to 5).
5) (K922) SENSOR RETURN CIRCUIT OPEN

Fig 3: Checking Sensor Return Circuit For Open
Courtesy of CHRYSLER LLC

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 (K922) Sensor Return circuit from the Throttle Body harness connector to the appropriate terminal of special tool #8815.

Is the resistance below 5.0 ohms?

Yes
1. Go to 6).
No
1. Repair the open in the (K922) Sensor Return circuit.
2. Perform POWERTRAIN VERIFICATION TEST .
6) 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?

Yes
1. Repair as necessary.
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. Replace and program the Powertrain Control Module per Service Information.
2. Perform POWERTRAIN VERIFICATION TEST .
7) THROTTLE FOLLOWER TEST
With the scan tool, perform the Throttle Follower Test.

Monitor the TP Sensor No. 2 voltage while slowly pressing the Throttle pedal down.

Is there a smooth voltage change from high to low?

Yes
1. Refer to INTERMITTENT CONDITION Diagnostic Procedure.
No
1. Disconnect the Battery when replacing the Throttle Body Assembly. Replace the Throttle Body Assembly. After installation is complete, with the scan tool select the ETC RELEARN function.
2. Perform POWERTRAIN VERIFICATION TEST .