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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Engine Cooling System) >> Diagnostic Information and Procedures >> DTC P00B7, P0597-P0599, or P2181 - E41 Engine Coolant Thermostat Heater Malfunction >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

Static Test

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector:E41 Engine Coolant Thermostat Heater
  3. Test for 10 to 70 ohms between the test points:Ignition terminal 2 & Control terminal 1
    • If not between 10 and 70 ohms 

      Replace the component:E41 Engine Coolant Thermostat Heater

    • Go to next step: If between 10 and 70 ohms 
  4. 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:E41 Engine Coolant Thermostat Heater

    • Go to next step: If infinite resistance 
  5. All OK.
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