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Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (2.9L Pcm 1 - DTCS B1800-00 To P0117-00) >> DTC Troubleshooting >> P0111-00-Intake Air Temperature Sensor 1 Circuit Performance >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR AN ACTIVE CONDITION 
    1. With the scan tool, read Powertrain Control Module 1 (PCM-1) DTCs and Freeze Frame Data and record on the repair order.
    2. Using the recorded Freeze Frame Data and the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
    3. With the scan tool, read PCM-1 DTCs.

      Is the DTC active or pending?

      Yes 

      • Go To  2

      No 

  2. CHECK THE BANK 1 TEMP SIGNAL FOR PROPER OPERATION 
    1. Turn the ignition off.
    2. Disconnect the Bank 1 MAP Sensor harness connector.
    3. Turn the ignition on.
    4. With the scan tool, read DTCs and record on the repair order.
      NOTE:

      The DTC P0113-00 - INTAKE AIR TEMPERATURE SENSOR 1 CIRCUIT HIGH should display as active or pending with the Bank 1 MAP Sensor harness connector disconnected.

    5. Turn the ignition off.
    6. Connect a jumper between the (K46) Bank 1 Temp Signal circuit and the (K900) Sensor Ground circuit at the MAP Sensor harness connector.
    7. Turn the ignition on.
    8. With the scan tool, read PCM-1 DTCs.
      NOTE:

      The DTC P0112-00 - INTAKE AIR TEMPERATURE SENSOR 1 CIRCUIT LOW should display as active or pending with the jumper in place.

      Do the DTCs display as described above?

      Yes 

      No 

      • Go To  3
  3. CHECK RELATED PCM AND COMPONENT CONNECTIONS 
    1. Perform any Service Bulletins that apply.
    2. Disconnect all PCM-1 harness connectors.
    3. Disconnect all related in-line harness connections (if equipped).
    4. Disconnect the related component harness connectors.
    5. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
      • Proper connector installation.
      • Damaged connector locks.
      • Corrosion.
      • Other signs of water intrusion.
      • Weather seal damage (if equipped).
      • Bent terminals.
      • Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
      • Terminals that have been pushed back into the connector cavity.
      • Check for spread terminals and verify proper terminal tension.

      Repair any conditions that are found.

    6. Reconnect all PCM-1 harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    7. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    8. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
    9. With the scan tool, erase DTCs.
    10. Test drive or operate the vehicle in accordance with the when monitored and set conditions.
    11. With the scan tool, read DTCs.

      Did the DTC return?

      Yes 

      No