DRS System does not Operate [12/2017 - 10/2023]: Procedure

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG).
4. Turn the Techstream on.
5. According to the display on the Techstream, read the Data List.

   Chassis > DRS > Data List 

   Tester Display	Measurement Item	Range	Normal Condition
   Limited Control Count(Overheat-Weak)	Limited control count (overheat-weak)	Min.: 0 Max.: 255	0
   Limited Control Count(Overheat-Strong)	Limited control count (overheat-strong)	Min.: 0 Max.: 255	0
   N Pos Stop Control Count	N pos stop control count	Min.: 0 Max.: 255	0
   Cur Pos Stop Control Count	Cur pos stop control count	Min.: 0 Max.: 255	0
   Prompt Stop Control Count	Prompt stop control count	Min.: 0 Max.: 255	0
   Power Supply Voltage Lowering Control Count	Power supply voltage lowering control count	Min.: 0 Max.: 255	0
   Limited Control Count(System Heavily-loaded)	Limited control count (system heavily-loaded)	Min.: 0 Max.: 255	0

   Chassis > DRS > Data List 

   Tester Display
   Limited Control Count(Overheat-Weak)
   Limited Control Count(Overheat-Strong)
   N Pos Stop Control Count
   Cur Pos Stop Control Count
   Prompt Stop Control Count
   Power Supply Voltage Lowering Control Count
   Limited Control Count(System Heavily-loaded)

   HINT: 

   When the power source voltage is low or high, or overheating protection is operating, the system is stopped temporarily.

   Result

   Result	Proceed to
   One of the Data List items has a count of 1 or more.	A
   Other than above	B

Result: 

B 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 09/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 10/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2020 - 11/2021]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 10/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 10/2023] 

Result: 

A 

See step  2

1. Check if the system stopped operating under severe driving conditions, such as on a rocky or muddy road.

   HINT: 

   When the load torque is very large, such as when driving on bad roads, the actuator can overheat easily and the system is stopped to prevent overheating.

   Result

   Result	Proceed to
   The system stopped under non-severe conditions.	A
   The system stopped under severe driving conditions.	B

Result: 

B 

See step  4

Result: 

A 

See step  3

1. Perform actuator forced activation and check if abnormal noises or vibration comes from the rear steering link assembly.

   Refer to ON-VEHICLE INSPECTION [12/2017 - 10/2023] 

   Result

   Result	Proceed to
   No abnormal noise or vibration	A
   Abnormal noise or vibration coming from rear steering link assembly	B

Result: 

B 

REPLACE REAR STEERING LINK ASSEMBLY. Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023] 

Result: 

A 

See step  4

1. Perform actuator forced activation and confirm the operation of the rear steering.

   Refer to ON-VEHICLE INSPECTION [12/2017 - 10/2023] 

   Chassis > DRS > Utility 

   Tester Display
   Activate Rear Steering Motor

   Result

   Result	Proceed to
   The rear wheels turn when actuator forced activation is performed	A
   The rear wheels do not turn when actuator forced activation is performed	B

Result: 

A 

END 

Result: 

B 

REPLACE REAR STEERING LINK ASSEMBLY. Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]