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Home >> Fiat >> 2016 >> 500 Turbo, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 62 (1.4L 16-Valve Turbo - DTCS P0016-00 To P0270-00 - 500) >> DTC Troubleshooting >> P0223-00-Throttle Position Sensor 2 Circuit High >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR AN ACTIVE DTC 
    NOTE:

    Diagnose and repair any system voltage or 5-Volt Supply voltage DTCs before continuing with this test.

    1. Turn the ignition on.
    2. With the scan tool read DTCs.

      Is the DTC active?

      Yes 

      • Go To  3

      No 

      • Go To  2
  2. THROTTLE FOLLOWER TEST 
    1. Turn the ignition on.
    2. With the scan tool, perform the ETC Throttle Follower Test and monitor the TPS 2 voltage.
    3. Slowly press the accelerator pedal down.
    4. The voltage for TPS 2 should start at approximately 4.3 volts and decrease to approximately 0.7 volts.

      Is the TPS 2 voltage within the range of the listed specification?

      Yes 

      No 

      • Go To  3
  3. CHECK THE 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE 
    1. Turn the ignition off.
    2. Disconnect the Throttle Body harness connector.
    3. Turn the ignition on.
    4. Measure the voltage between ground and the 5-Volt Supply circuit at the Throttle Body harness connector.

      Is the voltage above 5.2 volts?

      Yes 

      No 

      • Go To  4
  4. CHECK THE (K122) TPS 2 SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE 
    1. Measure the voltage between ground and the (K122) TPS 2 Signal circuit at the Throttle Body harness connector.

      Is the voltage above 5.2 volts?

      Yes 

      No 

      • Go To  5
  5. CHECK FOR THE (K122) TPS 2 SIGNAL CIRCUIT SHORTED TO THE (F855) 5-VOLT SUPPLY CIRCUIT 
    1. Turn the ignition off.
    2. Disconnect the PCM C2 harness connector.
    3. Check for continuity between the (K122) TPS 2 Signal circuit and the (F855) 5-Volt Supply circuit at the Throttle Body harness connector.

      Is there continuity between the (K122) TPS 2 Signal circuit and the (F855) 5-Volt Supply circuit?

      Yes 

      No 

      • Go To  6
  6. CHECK FOR THE (K122) TPS 2 SIGNAL CIRCUIT SHORTED TO THE (K447) ETC MOTOR (+) CIRCUIT 
    1. Check for continuity between the (K122) TPS Signal 2 circuit and the (K447) ETC Motor (+) circuit at the Throttle Body harness connector.

      Is there continuity between the (K122) TPS Signal 2 circuit and the (K447) ETC Motor (+) circuit?

      Yes 

      No 

      • Go To  7
  7. CHECK FOR THE (K122) TPS 2 SIGNAL CIRCUIT SHORTED TO THE (K448) ETC MOTOR (-) CIRCUIT 
    1. Check for continuity between the (K122) TPS Signal 2 circuit and the (K448) ETC Motor (-) circuit at the Throttle Body harness connector.

      Is there continuity between the (K122) TPS Signal 2 circuit and the (K448) ETC Motor (-) circuit?

      Yes 

      No 

      • Go To  8
  8. CHECK THE (K122) TPS SIGNAL 2 CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    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.

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

      Is the resistance below 3.0 Ohms?

      Yes 

      • Go To  9

      No 

  9. CHECK THE (K922) TPS SENSOR GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Measure the resistance of the (K922) TPS Sensor Ground circuit between the Throttle Body harness connector and the GPEC Adaptor.

      Is the resistance below 3.0 Ohms?

      Yes 

      • Go To  10

      No 

  10. THROTTLE BODY 
    1. Turn the ignition off.
    2. Reconnect the PCM C2 harness connector.
    3. Connect a jumper between the (K122) TPS Signal 2 circuit and the (F855) 5-Volt Supply circuit at the Throttle Body harness connector.
    4. Turn the ignition on.
    5. With a scan tool, read the Throttle Body voltage.
      NOTE:

      The sensor voltage should be 5.0 volts (plus or minus.1 volts) with the jumper in place.

      Does the scan tool display the voltage as described above?

      Yes 

      • Verify that there is good pin to terminal contact in the Throttle Body and Powertrain Control Module connectors. If no problems are found, replace the Throttle Body. Refer to THROTTLE BODY, REMOVAL . After installation is complete, using a scan tool select the ETC RELEARN function.

      No 

      • Go To  11
  11. 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.
    4. Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.
    5. Look for the data to change or for the DTC to reset during the wiggle test.
    6. Perform any Service Bulletins that may apply.

      Were any problems found?

      Yes 

      No 

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