DRS System does not Operate [09/2014 - ]: Procedure

1. Check for DTCs.

   Refer to DTC CHECK / CLEAR [09/2014 - 09/2020] , or refer to DTC CHECK / CLEAR [09/2020 - ]

   Chassis > DRS > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   DTCs are output	B

Result: 

B 

GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2014 - 09/2020]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2020 - ] 

Result: 

A 

See step  2

1. Check for DTCs in the variable gear ratio steering system.

   Refer to DTC CHECK / CLEAR [09/2014 - 09/2020] , or refer to DTC CHECK / CLEAR [09/2020 - ]

   Chassis > VGRS > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   DTCs are output	B

Result: 

B 

GO TO VARIABLE GEAR RATIO STEERING SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2014 - 11/2017]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2017 - 09/2020]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2020 - ] 

Result: 

A 

See step  3

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. Enter the following menus: Chassis / DRS / Data List / Abnormal Operation History.
6. According to the display on the Techstream, read the Abnormal Operation History.

   Chassis > DRS > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Limited Control Count (Overheat-Weak)	Limited control count (overheat-weak)	Min.: 0 Max.: 255	-	The number of times which shows that overheat status of DRS became "Overheat-Weak" and then the control was limited.
   Limited Control Count (Overheat-Strong)	Limited control count (overheat-strong)	Min.: 0 Max.: 255	-	The number of times which shows that overheat status of DRS became "Overheat-Strong" and then the control was limited.
   N Pos Stop Control Count	N pos stop control count	Min.: 0 Max.: 255	-	The number of times which shows that power supply status to DRS became "N Pos Stop" and then the control in "N Pos Stop" happened.
   Cur Pos Stop Control Count	Cur pos stop control count	Min.: 0 Max.: 255	-	The number of times which shows that power supply status to DRS became "Cur Pos Stop" and then the control in "Cur Pos Stop" happened.
   Prompt Stop Control Count	Prompt stop control count	Min.: 0 Max.: 255	-	The number of times which shows that power supply status to DRS became "Prompt Stop" and then the control in "Prompt Stop" happened.
   Power Supply Voltage Lowering Control Count	Power supply voltage lowering control count	Min.: 0 Max.: 255	-	The number of times which shows that power supply voltage to DRS became under 10 V and then the control in this condition happened.
   Limited Control Count (System Heavily-loaded)	Limited control count (system heavily-loaded)	Min.: 0 Max.: 255	-	The number of times which shows that DRS system became heavily-loaded and then the control was limited.

   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 [09/2014 - 10/2015]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - 11/2017]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2017 - 10/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - 11/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2019 - 09/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2020 - 10/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ] 

Result: 

A 

See step  4

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  6

Result: 

A 

See step  5

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

   Refer to ON-VEHICLE INSPECTION [09/2014 - ] 

   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 [09/2014 - ] 

Result: 

A 

See step  6

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

   Refer to ON-VEHICLE INSPECTION [09/2014 - ] 

   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 [09/2014 - ]