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Home >> Chevrolet >> 2022 >> Tahoe SSV >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Controls And Fuel - 3.0L (Lm2) Diesel - Diagnostic Information And Procedures (2 Of 5)) >> Diagnostic Information and Procedures >> DTC P026A >> Component Testing

Component Testing

WARNING: This page is about a different variant/trim than selected.
  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector:
    • B193A Charge Air Cooler Air Temperature Sensor - Inlet
    • B193B Charge Air Cooler Air Temperature Sensor - Outlet
  3. Test for 200 to 86, 880 ohms between the test points: Low Reference terminal 1 & Signal terminal 2
    • If not between 200 and 86, 880 ohms 

      Replace the component:

    • B193A Charge Air Cooler Air Temperature Sensor - Inlet
    • B193B Charge Air Cooler Air Temperature Sensor - Outlet
    • Go to next step: If between 200 and 86, 880 ohms 
  4. Verify the value is within the range listed in the table: Temperature Versus Resistance - Charge Air Cooler Temperature Sensor
    • If not in the specified range 

      Replace the component:

    • B193A Charge Air Cooler Air Temperature Sensor - Inlet
    • B193B Charge Air Cooler Air Temperature Sensor - Outlet
    • Go to next step: If in the specified range 
  5. Test for infinite resistance between the test points: Each terminal of the component & The component's housing
    • If less than infinite resistance 

      Replace the component:

    • B193A Charge Air Cooler Air Temperature Sensor - Inlet
    • B193B Charge Air Cooler Air Temperature Sensor - Outlet
    • Go to next step: If infinite resistance 
  6. All OK.
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