Harsh shocks during automatic transmission shifting (AWR6B45)

1. Harsh shocks during automatic transmission shifting diagnostics

1. Shift change from N range to D range (When stopped)

1) Engine

  • Engine failure
  • Excessive flexible plate runout width
  • Engine mounting and transmission mounting malfunction

2) Chassis

  • Damage, wear, looseness, or excessive runout of the propeller shaft and drive shaft
  • Looseness of the suspension
  • Tire imbalance
  • Interference between the drive system and the body

3) Electronic system

  • Battery voltage malfunction
  • Turbine speed sensor malfunction
  • Output speed sensor malfunction
  • Inhibitor switch malfunction
  • Transmission fluid temperature sensor 1 malfunction
  • Clutch control solenoid (SL1) malfunction
  • TCM self-diagnosis failure or internal malfunction

4) CAN communication

  • Engine torque malfunction
  • Engine speed signal malfunction
  • Accelerator opening position signal malfunction

5) ATF

  • Insufficient ATF
  • Intrusion of water or ATF other than that specified
  • Burning ATF

6) Transmission assembly

  • Valve body malfunction
  • Transmission assembly internal malfunction
  • C1 clutch system malfunction

2. When shifting from the N range to the R range

1) Engine

  • Engine failure
  • Excessive flexible plate runout width
  • Engine mounting and transmission mounting malfunction

2) Chassis

  • Damage, wear, looseness, or excessive runout of the propeller shaft and drive shaft
  • Looseness of the suspension
  • Tire imbalance
  • Interference between the drive system and the body

3) Electronic system

  • Battery voltage malfunction
  • Turbine speed sensor malfunction
  • Output speed sensor malfunction
  • Inhibitor switch malfunction
  • Transmission fluid temperature sensor 1 malfunction
  • Shift solenoid (SL) malfunction
  • Clutch control solenoid (SL4) malfunction
  • TCM self-diagnosis failure or internal malfunction

4) CAN communication

  • Engine torque malfunction
  • Engine speed signal malfunction
  • Accelerator opening position signal malfunction

5) ATF

  • Insufficient ATF
  • Intrusion of water or ATF other than that specified
  • Burning ATF

6) Transmission assembly

  • Valve body malfunction
  • Transmission assembly internal malfunction
  • B1 brake and B4 brake system malfunction

3. Shift change from N range to D range (When driving)

1) Engine

  • Engine failure
  • Excessive flexible plate runout width
  • Engine mounting and transmission mounting malfunction

2) Chassis

  • Damage, wear, looseness, or excessive runout of the propeller shaft and drive shaft
  • Looseness of the suspension
  • Tire imbalance
  • Interference between the drive system and the body

3) Electronic system

  • Battery voltage malfunction
  • Turbine speed sensor malfunction
  • Output speed sensor malfunction
  • Inhibitor switch malfunction
  • Transmission fluid temperature sensor 1 malfunction
  • Clutch control solenoid (SL1), (SL2), (SL3), and (SL4) malfunction
  • Line pressure control solenoid (SLT) malfunction
  • Lock-up control solenoid (SLU) malfunction
  • TCM self-diagnosis failure or internal malfunction

4) CAN communication

  • Engine torque malfunction
  • Engine speed signal malfunction
  • Accelerator opening position signal malfunction

5) ATF

  • Insufficient ATF
  • Intrusion of water or ATF other than that specified
  • Burning ATF

6) Transmission assembly

  • Valve body malfunction
  • Transmission assembly internal malfunction
  • C1 clutch and C2 clutch system malfunction
  • B1 brake, B2 brake, and B4 brake system malfunction

4. When shifting from 1st gear to 2nd gear or from 2nd gear to 1st gear

1) Engine

  • Engine failure
  • Excessive flexible plate runout width
  • Engine mounting and transmission mounting malfunction

2) Chassis

  • Damage, wear, looseness, or excessive runout of the propeller shaft and drive shaft
  • Looseness of the suspension
  • Tire imbalance
  • Interference between the drive system and the body

3) Electronic system

  • Battery voltage malfunction
  • Turbine speed sensor malfunction
  • Output speed sensor malfunction
  • Inhibitor switch malfunction
  • Transmission fluid temperature sensor 1 malfunction
  • Shift solenoid (SL) malfunction
  • Clutch control solenoid (SL3) malfunction
  • Line pressure control solenoid (SLT) malfunction
  • Lock-up control solenoid (SLU) malfunction
  • TCM self-diagnosis failure or internal malfunction

4) CAN communication

  • Engine torque malfunction
  • Engine speed signal malfunction
  • Accelerator opening position signal malfunction

5) ATF

  • Insufficient ATF
  • Intrusion of water or ATF other than that specified
  • Burning ATF

6) Transmission assembly

  • Valve body malfunction
  • Transmission assembly internal malfunction
  • B1 brake system malfunction
  • B4 brake system malfunction (In manual mode)

5. When shifting from 2nd gear to 3rd gear or from 3rd gear to 2nd gear

1) Engine

  • Engine failure
  • Excessive flexible plate runout width
  • Engine mounting and transmission mounting malfunction

2) Chassis

  • Damage, wear, looseness, or excessive runout of the propeller shaft and drive shaft
  • Looseness of the suspension
  • Tire imbalance
  • Interference between the drive system and the body

3) Electronic system

  • Battery voltage malfunction
  • Turbine speed sensor malfunction
  • Output speed sensor malfunction
  • Inhibitor switch malfunction
  • Transmission fluid temperature sensor 1 malfunction
  • Clutch control solenoid (SL3) and (SL4) malfunction
  • Line pressure control solenoid (SLT) malfunction
  • TCM self-diagnosis failure or internal malfunction

4) CAN communication

  • Engine torque malfunction
  • Engine speed signal malfunction
  • Accelerator opening position signal malfunction

5) ATF

  • Insufficient ATF
  • Intrusion of water or ATF other than that specified
  • Burning ATF

6) Transmission assembly

  • Valve body malfunction
  • Transmission assembly internal malfunction
  • B1 brake and B2 brake system malfunction

6. When shifting from 3rd gear to 4th gear or from 4th gear to 3rd gear

1) Engine

  • Engine failure
  • Excessive flexible plate runout width
  • Engine mounting and transmission mounting malfunction

2) Chassis

  • Damage, wear, looseness, or excessive runout of the propeller shaft and drive shaft
  • Looseness of the suspension
  • Tire imbalance
  • Interference between the drive system and the body

3) Electronic system

  • Battery voltage malfunction
  • Turbine speed sensor malfunction
  • Output speed sensor malfunction
  • Inhibitor switch malfunction
  • Transmission fluid temperature sensor 1 malfunction
  • Clutch control solenoid (SL2), (SL3), and (SL4) malfunction
  • Line pressure control solenoid (SLT) malfunction
  • TCM self-diagnosis failure or internal malfunction

4) CAN communication

  • Engine torque malfunction
  • Engine speed signal malfunction
  • Accelerator opening position signal malfunction

5) ATF

  • Insufficient ATF
  • Intrusion of water or ATF other than that specified
  • Burning ATF

6) Transmission assembly

  • Valve body malfunction
  • C2 clutch system malfunction
  • B1 brake and B2 brake system malfunction

7. When shifting from 4th gear to 5th gear or from 5th gear to 4th gear

1) Engine

  • Engine failure
  • Excessive flexible plate runout width
  • Engine mounting and transmission mounting malfunction

2) Chassis

  • Damage, wear, looseness, or excessive runout of the propeller shaft and drive shaft
  • Looseness of the suspension
  • Tire imbalance
  • Interference between the drive system and the body

3) Electronic system

  • Battery voltage malfunction
  • Turbine speed sensor malfunction
  • Output speed sensor malfunction
  • Inhibitor switch malfunction
  • Transmission fluid temperature sensor 1 malfunction
  • Clutch control solenoid (SL1) and (SL4) malfunction
  • Line pressure control solenoid (SLT) malfunction
  • TCM self-diagnosis failure or internal malfunction

4) CAN communication

  • Engine torque malfunction
  • Engine speed signal malfunction
  • Accelerator opening position signal malfunction

5) ATF

  • Insufficient ATF
  • Intrusion of water or ATF other than that specified
  • Burning ATF

6) Transmission assembly

  • Valve body malfunction
  • C1 clutch system malfunction
  • B1 brake system malfunction

8. When shifting from 5th gear to 6th gear or from 6th gear to 5th gear

1) Engine

  • Engine failure
  • Excessive flexible plate runout width
  • Engine mounting and transmission mounting malfunction

2) Chassis

  • Damage, wear, looseness, or excessive runout of the propeller shaft and drive shaft
  • Looseness of the suspension
  • Tire imbalance
  • Interference between the drive system and the body

3) Electronic system

  • Battery voltage malfunction
  • Turbine speed sensor malfunction
  • Output speed sensor malfunction
  • Inhibitor switch malfunction
  • Transmission fluid temperature sensor 1 malfunction
  • Clutch control solenoid (SL3) and (SL4) malfunction
  • Line pressure control solenoid (SLT) malfunction
  • TCM self-diagnosis failure or internal malfunction

4) CAN communication

  • Engine torque malfunction
  • Engine speed signal malfunction
  • Accelerator opening position signal malfunction

5) ATF

  • Insufficient ATF
  • Intrusion of water or ATF other than that specified
  • Burning ATF

6) Transmission assembly

  • Valve body malfunction
  • B1 brake and B2 brake system malfunction

9. When kick-down

1) Engine

  • Excessive flexible plate runout width
  • Engine mounting and transmission mounting malfunction

2) Chassis

  • Damage, wear, looseness, or excessive runout of the propeller shaft and drive shaft
  • Looseness of the suspension
  • Tire imbalance
  • Interference between the drive system and the body

3) Electronic system

  • Battery voltage malfunction
  • Turbine speed sensor malfunction
  • Output speed sensor malfunction
  • Inhibitor switch malfunction
  • Transmission fluid temperature sensor 1 malfunction
  • Shift solenoid (SL) malfunction
  • Clutch control solenoid (SL1), (SL2), (SL3), and (SL4) malfunction
  • Line pressure control solenoid (SLT) malfunction
  • Lock-up control solenoid (SLU) malfunction
  • TCM self-diagnosis failure or internal malfunction

4) CAN communication

  • Engine torque malfunction
  • Engine speed signal malfunction
  • Accelerator opening position signal malfunction

5) ATF

  • Insufficient ATF
  • Intrusion of water or ATF other than that specified
  • Burning ATF

6) Transmission assembly

  • Valve body malfunction
  • Transmission assembly internal malfunction

10. When the accelerator is on and off without shifting

1) Engine

  • Engine failure
  • Excessive flexible plate runout width
  • Engine mounting and transmission mounting malfunction

2) Chassis

  • Damage, wear, looseness, or excessive runout of the propeller shaft and drive shaft
  • Tire imbalance
  • Interference between the drive system and the body

3) Electronic system

  • Battery voltage malfunction
  • Turbine speed sensor malfunction
  • Output speed sensor malfunction
  • Inhibitor switch malfunction
  • Transmission fluid temperature sensor 1 malfunction
  • Shift solenoid (SL) malfunction
  • Lock-up control solenoid (SLU) malfunction
  • Poor connections at the harness connector
  • TCM self-diagnosis failure or internal malfunction

4) CAN communication

  • Engine torque malfunction
  • Engine speed signal malfunction
  • Accelerator opening position signal malfunction

5) ATF

  • Insufficient ATF
  • Intrusion of water or ATF other than that specified
  • Burning ATF

6) Transmission assembly

  • Valve body malfunction
  • Transmission assembly internal malfunction
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