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Home >> Cadillac >> 2013 >> Escalade Hybrid, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Automatic Transmission - 6L80/6L90 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0722 or P0723 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Ignition Off, remove the Q8 Control Solenoid Valve Assembly.
  2. Connect the DT-47825-10  Jumper Harness between the vehicle wire harness electrical connector and the Q8 Control Solenoid Valve Assembly electrical connector.
  3. Disconnect the B14A/B14C Transmission Input and Output Speed Sensor harness connector X3 at the Q8 Control Solenoid Valve Assembly. Ignition ON.
  4. Test for 8.3-9.3 V between the supply circuit terminal B at the Q8 Control Solenoid Valve Assembly.
    • If not between 8.3-9.3 V 

      Replace the Q8 Control Solenoid Valve Assembly

    • If between 8.3-9.3 V 
  5. Ignition Off, connect the red lead of the J-38522  Variable Signal Generator to the signal circuit terminal C at the Q8 Control Solenoid Valve Assembly and ground at the transmission case.
  6. Set the J-38522  Variable Signal Generator to the following specifications:
    • Signal Switch to 5 V
    • Frequency switch to 300
    • Duty cycle switch to the 50 or the Normal position
  7. Ignition On.
  8. Verify the scan tool Transmission OSS parameter is between 495-505 RPM.
    • If not between 495-505 RPM 

      Replace the Q8 Control Solenoid Valve Assembly.

    • If between 495-505 RPM 
  9. Verify there is no damage or misalignment with the machined slots on the Output Shaft Assembly.
    • If the machined slots are damaged or misaligned 

      Repair or replace as necessary.

    • If the machined slots are not damaged or misaligned 
  10. Replace the B14A/B14C Transmission Input and Output Speed Sensor.