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Home >> Chevrolet >> 2018 >> Spark LT, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Automatic Transmission - JATCO CVT) >> Diagnostic Information and Procedures >> DTC P0961-P0963, P0965-P0967, P0970, P0971, P2720, P2721, P2763, or P2764 (MR8) >> Component Testing

Component Testing

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

Pressure Control Solenoid Valve 1, 2, 3, 4, 5

  1. Disconnect the electrical connector: Q8 Control Solenoid Valve Assembly
  2. NOTE:
    • When test probing harness terminals, it is imperative to use the proper test probe from the most current version of the J-35616  GM-Approved Terminal Test Kit. Use of an improper test probe may deform the terminal, resulting in intermittent open conditions.
    • Testing for Step 2 is performed on the Q8 Control Solenoid Valve Assembly connector using the GY probe J-35616-19
  3. Test for the resistance listed below between the test points:
    • Control circuit terminal 1 & Chassis Ground
    • Control circuit terminal 2 & Chassis Ground
    • Control circuit terminal 6 & Chassis Ground
    • Control circuit terminal 7 & Chassis Ground
    • Control circuit terminal 8 & Chassis Ground
    • If the resistance is not within the specified range for the given temperature 

      Replace the component: Q8 Control Solenoid Valve Assembly

    • Go to next step: If the resistance is within the specified range for the given temperature 
  4. Q77 Transmission Control Solenoid Valve = 1, 2, 3, 4, 5 OK