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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 >> P0222-00-Throttle Position Sensor 2 Circuit Low >> 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:

    When this DTC is active the engine speed, torque and vehicle speed are limited to a Limp in mode.

    NOTE:

    If a 5-Volt Reference DTC has also set, diagnose the 5-Volt DTC before continuing.

    NOTE:

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

    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 
    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 between 4.9 and 5.1 volts?

      Yes 

      • Go To  4

      No 

  4. CHECK THE (K122) TPS 2 SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    1. Turn the ignition off.
    2. Disconnect the PCM C2 harness connector.
    3. Check for continuity between ground and the (K122) TPS 2 Signal circuit at the Throttle Body harness connector.

      Is there continuity between ground and the (K122) TPS 2 Signal circuit?

      Yes 

      No 

      • Go To  5
  5. CHECK FOR THE (K122) TPS 2 SIGNAL CIRCUIT SHORTED TO THE (K922) TPS SENSOR RETURN CIRCUIT 
    1. Check for continuity between the (K122) TPS 2 Signal circuit and the (K922) TPS Return circuit at the Throttle Body harness connector.

      Is there continuity between the (K122) TPS 2 Signal circuit and the (K922) TPS Return circuit?

      Yes 

      No 

      • Go To  6
  6. THROTTLE POSITION SENSOR 
    1. Reconnect the PCM C2 harness connector.
    2. Connect a jumper between the (K122) TPS 2 Signal circuit and the (K922) TPS Return circuit at the Throttle Body harness connector.
    3. Turn the ignition on.
    4. With the scan tool, monitor the TPS 2 voltage.

      Does the voltage read 0.0 volts with the jumper in place?

      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 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 POWERTRAIN VERIFICATION TEST, 16V Turbo .

      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 Service Bulletins that may apply.

      Were there any problems found?

      Yes 

      No 

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