VGRS System Stops or does not Operate: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Check the record of continuous overheat preventive control. Enter the following menus: Chassis / VGRS / Data List.
   VGRS
   
   

   Tester Display	Measurement Item/Range	Normal Condition
   Motor Overheat Record	Record of continuous overheat preventive control / Rec or Unrec	Rec or Unrec

   Result

   A: "Rec" (Record motor overheating)

   B: "Unrec" (No record of motor overheating)

   HINT: 

   If "Rec" is displayed, reset the setting to "Unrec". Refer to DATA LIST.

B → See step   3 

A: Go to next step 

1. Turn the engine switch on (IG) and wait for 30 minutes until the steering actuator cools down.
2. Start the engine and slowly turn the steering wheel from lock to lock (approximately 90°/sec) 3 times.

   HINT: 

   If turning the steering wheel quickly while driving at low speeds, the steering angle may differ between left and right, or the steering wheel may become off-center.

   However, this is not a malfunction.

3. Check the number of turns from lock to lock.

   Result

   A: 2.7 turns

   B: 3.2 turns

B → See step   3 

A → VGRS SYSTEM IS NORMAL 

1. Start the engine.
2. Turn the steering wheel.
3. Check the steering effort.

   OK

   Below 6.5 N*m (66 kgf*cm, 57 in.*lbf)

   HINT: 

   After completing the inspection or repair, attempt to simulate the problem and then perform step 1 again to reconfirm that the problem does not occur.

NG → GO TO POWER STEERING SYSTEM 

OK: Go to next step 

1. Check for an abnormal noise or vibration in the steering actuator.

   OK

   Neither an abnormal noise or vibration occurs.

NG → GO TO STEERING WHEEL VIBRATES OR ABNORMAL NOISE IS HEARD FROM STEERING WHEEL 

OK: Go to next step 

1. Turn the engine switch on (IG).
   Fig 1: Checking Wire Harness

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage and resistance according to the value(s) in the table below.

   Voltage

   Tester connection	Condition	Specified condition
   A40-3 (IG) - Body ground	Engine switch on (IG)	10 to 14 V
   A40-8 (PIG) - Body ground	Engine switch on (IG)	10 to 14 V

3. Turn the engine switch off.
4. Measure the resistance according to the value(s) in the table below.

   Resistance

   Tester connection	Condition	Specified condition
   A40-7 (PGND) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE WIRE HARNESS 

OK → REPLACE STEERING CONTROL ECU