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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6T30 (MH9) Or 6T40 (MH8) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P0716, P0717, P07BF or P07C0: Input Speed Sensor >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, remove the Q8 Control Solenoid Valve Assembly.
    NOTE: You must perform Circuit/System Verification  first.
  2. Place the Q8 Control Solenoid Valve Assembly on a clean work surface near the transmission assembly.
  3. Connect the DT-48616-10  adapter harness between the vehicle harness connector and the Q8 Control Solenoid Valve Assembly connector. Ignition ON.
  4. Test for 11-13 V between the ISS 12 V circuit terminal B on the Q8 Control Solenoid Valve Assembly X3 connector and ground.
    • If not between 11-13 V 

      Replace the Q8 Control Solenoid Valve Assembly.

    • If between 11-13 V 
  5. Verify the scan tool Transmission ISS parameter is between 495-505 RPM when performing the input shaft speed test. Refer to Control Solenoid Valve and Transmission Control Module Assembly Input Shaft Speed/Output Shaft Speed Input Test .
    • If not between 495-505 RPM 

      Replace the Q8 Control Solenoid Valve Assembly.

    • If between 495-505 RPM 
  6. Verify there is no damage to the reluctor, which is attached to the 4-5-6 clutch and 3-5-R clutch housing assembly or misalignment between the B14C Transmission Input Shaft Speed Sensor and reluctor.
    • If the reluctor is damaged or misaligned 

      Repair or replace as necessary.

    • If the reluctor is not damaged or misaligned 
  7. Replace the B14C Transmission Input Shaft Speed Sensor.
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