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Home >> Jeep >> 2022 >> Gladiator Mojave, Part Time T/Case Control, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 14 (3.0L Diesel - DTCS P0087-00 To P0116-00) >> DTC Troubleshooting >> P0112-00-Intake Air Temperature Sensor 1 Circuit Low >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. READ AND RECORD DTCS AND ENVIRONMENTAL DATA - ERASE DTCS AND CHECK FOR THE DTC TO RETURN 
    1. With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
    2. For future reference, with the scan tool, run and save a vehicle Scan Report and all related recorded data.
    3. With the scan tool, erase all DTCs.
    4. Turn the ignition off for a minimum of 75.0 seconds.
    5. Turn the ignition on.
    6. Using the When Monitored and Set Conditions above and recorded data, operate the vehicle in the conditions that set the DTC.
    7. With the scan tool, read DTCs.

      Did the DTC return?

      Yes 

      • Go To  2

      No 

      • Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT DTC .
  2. CHECK THE ABILITY OF THE PCM TO READ THE IAT SENSOR SIGNAL 
    1. Turn the ignition off.
    2. Disconnect the IAT Sensor harness connector.
    3. Turn the ignition on.
    4. With the scan tool, read DTCs and record on the repair order.
      NOTE:

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

      Does the scan tool display as described above?

      Yes 

      No 

      • Go To 3
  3. CHECK THE (K362) INTAKE AIR TEMPERATURE SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    1. Turn the ignition off.
    2. Disconnect the PCM C1 harness connector.
    3. Check for continuity between ground and the (K362) Intake Air Temperature Signal circuit at the MAF/Intake Air Sensor harness connector.

      Is there continuity between ground and the (K362) Intake Air Temperature Signal circuit?

      Yes 

      No 

      • Go To  4
  4. CHECK FOR THE INTAKE AIR TEMPERATURE (K362) SIGNAL CIRCUIT SHORTED TO THE (K757) SENSOR GROUND CIRCUIT 
    1. Check for continuity between the Intake Air Temperature (K362) Signal circuit and the (K757) Sensor Ground circuit at the MAF/Intake Air Sensor harness connector.

      Is there continuity between the Intake Air Temperature (K362) Signal circuit and the (K757) Sensor Ground circuit?

      Yes 

      • Repair the Intake Air Temperature (K362) Signal circuit for a short to the (K757) Sensor Ground circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to 3.0L, POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  5
  5. CHECK RELATED PCM AND COMPONENT CONNECTIONS 
    1. Disconnect all PCM harness connectors.
    2. Disconnect all related in-line harness connections (if equipped).
    3. Disconnect the related component harness connectors.
    4. 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.

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

      Did the DTC return?

      Yes 

      • Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to 3.0L, POWERTRAIN VERIFICATION TEST .

      No 

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