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Home >> GMC >> 2018 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Controls And Fuel - 1.5L (LYX) - Diagnostic Information And Procedures (P0010 - P034B)) >> Diagnostic Information And Procedures >> DTC P0096 Or P0111: Air Intake Temperature Sensor 1 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
NOTE:

You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.

  1. Verify the conditions listed below do not exist with the air induction system:
    • A loose or disconnected charge air cooler hose or pipe; where equipped
    • A blocked or obstructed charge air cooler, including: after-market grill covers; where equipped
    • Any snow or ice build-up at the charge air cooler in cold climates; where equipped
    • Any mud or dirt build-up at the charge air cooler; where equipped
    • A restricted or collapsed air intake duct
    • An intake manifold leak
    • A MAP sensor seal that is leaking, missing, or damaged
    • A misaligned or damaged air intake duct
    • Any water intrusion in the induction system
    • An intake manifold resonator with a leaking seal, or a cracked or broken housing
    • If a condition exists 

      Repair or replace the component as necessary.

    • Go to next step: If none of the conditions exist 
  2. Determine if EL-38522-A  or equivalent is available.
    • If EL-38522-A or equivalent is not available 
    1. Test or replace the B75C Multifunction Intake Air sensor.
    2. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the freeze frame/failure records data.
    3. Verify the DTC does not set.
      • If the DTC sets 

        Replace the K20 Engine Control Module.

      • Go to next step: If no DTCs set 
    4. All OK.
    • Go to next step: If EL-38522-A or equivalent is available 
  3. Ignition Off, connect the leads of the EL-38522-A  as listed below:
    • Red lead to the signal circuit terminal 6 at the harness connector
    • Black leads to ground
    • Battery voltage supply lead to B+
  4. Set the EL-38522-A  to the specifications listed below:
    • Signal switch to 5 V
    • Frequency switch to 5 kHz
    • Duty Cycle switch to 50 % (Normal)
  5. Engine idling, verify the scan tool MAF Sensor parameter is between 4, 950 - 5, 050 Hz.
    • If not within the specified range 

      Replace the K20 Engine Control Module.

    • Go to next step: If within the specified range 
  6. Test or replace the B75C Multifunction Intake Air Sensor
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