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Home >> Chevrolet >> 2017 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 61 (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 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. 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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