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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 417 (5.7L CNG - DTCS P0204 To P0606 - 2500 Hd) >> Diagnosis And Testing >> P0222-Throttle Position Sensor 2 Circuit Low >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 2500 HD and 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.
  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.

    NOTE:

    If P2101 is also set, then make sure that the blade moves freely and does not hang up near Wide Open Throttle before trying to repair P0222.

    1. Ignition on, engine not running.
    2. Using the scan tool, read the active DTCs.

      Is the DTC Active at this time?

      Yes 

      • Go To  2

      No 

      • Go To  8
  2. CHECK THE (F855) 5-VOLT SUPPLY CIRCUIT 
    Fig 1: Checking 5 Volt Supply Circuit
    GC0142079Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Throttle Body harness connector.
    3. Ignition on, engine not running.
    4. Measure the voltage on the (F855) 5-Volt Supply circuit at the Throttle Body harness connector.

      Is the voltage between 4.8 and 5.2 volts?

      Yes 

      • Go To  3

      No 

      • Repair the (F855) 5-Volt Supply circuit for an open or short to ground.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  3. CHECK THE (K122) TPS 2 SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Turn the ignition off.
    2. Disconnect the PCM C2 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 the GPEC Diagnostic Adaptor to perform the diagnosis.

    3. Connect the (special tool #10436, Adapter, GPEC Diagnostic).
    4. Measure the resistance of the (K122) TPS 2 Signal circuit between the Throttle Body harness connector and the GPEC Adaptor.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  4

      No 

      • Repair the (K122) TPS 2 Signal circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  4. CHECK THE (K122) TPS 2 SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    Fig 2: Checking TP Sensor No. 2 Signal Circuit For Short To Ground
    GC0142097Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between ground and the (K122) TPS 2 Signal circuit at the Throttle Body harness connector.

      Is the resistance above 10k Ohms?

      Yes 

      • Go To  5

      No 

      • Repair the (K122) TPS 2 Signal for a short to ground.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  5. CHECK FOR THE (K122) TPS 2 SIGNAL CIRCUIT SHORTED TO THE (K922) TPS RETURN CIRCUIT 
    Fig 3: Checking TP Sensor No. 2 Signal Circuit For Short To TP Sensor Return Circuit
    GC0142098Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between the (K122) TPS 2 Signal circuit and the (K922) TPS Return circuit at the Throttle Body harness connector.

      Is the resistance above 10k Ohms?

      Yes 

      • Go To  6

      No 

      • Repair the short between the (K922) TPS Return circuit and the (K122) TPS 2 Signal circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  6. THROTTLE POSITION SENSOR 
    Fig 4: Checking Throttle Position Sensor
    GC0142093Courtesy of CHRYSLER GROUP, LLC
    1. Reconnect the PCM C2 harness connector.
    2. Connect a jumper between the (F855) 5-Volt Supply circuit and the (K122) TPS 2 Signal circuit at the Throttle Body harness connector.
    3. Using the scan tool, monitor the TPS 2 voltage.

      Is the voltage between 4.8 and 5.2 volts with the jumper installed?

      Yes 

      • Verify that there is good pin to terminal contact in the Throttle Body and Powertrain Control Module connectors. If OK, disconnect the Battery when replacing the Throttle Body Assembly. Replace the Throttle Body Assembly. Refer to THROTTLE BODY, REMOVAL . After installation is complete, with a scan tool select the ETC RELEARN function.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  7
  7. POWERTRAIN CONTROL MODULE (PCM) 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Throttle Body and the Powertrain Control Module (PCM).
    2. Look for any chafed, pierced, pinched or partially broken wires.
    3. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Throttle Body and Powertrain Control Module connectors.
    4. Perform any Technical Service Bulletins that may apply.

      Were there any problems found?

      Yes 

      • Repair as necessary.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

  8. THROTTLE FOLLOWER TEST 
    1. Ignition on, engine not running.
    2. Using the scan tool, perform the ETC Throttle Follower Test.
    3. Monitor the TPS 2 voltage while slowly pressing the Throttle pedal down.

      Is there a smooth voltage change from approximately 4.3 volts and decrease to approximately 0.7 volts?

      Yes 

      No 

      • Verify that there is good pin to terminal contact in the Throttle Body and Powertrain Control Module connectors. If OK, disconnect the Battery when replacing the Throttle Body Assembly. Replace the Throttle Body Assembly. Refer to THROTTLE BODY, REMOVAL . After installation is complete, with a scan tool select the ETC RELEARN function.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
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