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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Automatic Transmission - AF40-6) >> Diagnostic Information and Procedures >> DTC P2727, P2729 or P2730: Brake Band Pressure Control Solenoid Valve Control Circuit >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Engine running at idle, command the Shift Brake Pressure Control Solenoid Valve with a scan tool.
  2. Verify the value should change from 0.0-1.1 A.
    • If the value does not change from 0.0-1.1 A 
    1. Ignition OFF and all vehicle systems OFF. Remove the K71 Transmission Control Module to disconnect the X2 harness connector. It may take up to 2 min for all vehicle systems to power down.
    2. Test for infinite resistance between ground and the terminals listed below:
      • Low reference circuit terminal 21 at the X2 harness connector
      • Control circuit terminal 16 at the X2 harness connector
      • If less than infinite resistance, replace the wiring harness
      • If infinite resistance
    3. Test for 5-5.6 Ω at 20°C (68°F) between the low reference circuit terminal 21 and the control circuit terminal 16.
    • If the value changed from 0.0-1.1 A 
  3. Verify the DTC does not set while operating the vehicle under the Conditions for Running the DTC.
    • If the DTC is set 

      Replace the K71 Transmission Control Module.

    • If the DTC is not set 
  4. All OK.