Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - VARIABLE GEAR RATIO STEERING

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (RECORD OF OVERHEAT)

CHECK HEAT PROTECTION FUNCTION FOR STEERING ACTUATOR

CHECK STEERING EFFORT

CHECK STEERING ACTUATOR

CHECK STEERING CONTROL ECU (POWER SOURCE CIRCUIT)

VARIABLE GEAR RATIO STEERING SYSTEM - VGRS System Stops or does not Operate

INSPECTION PROCEDURE

  • HINT:
  • This problem may be caused by a malfunction in the vehicle stability control system or steering system.
  • Make sure that no DTC is output for the skid control ECU or steering control ECU before proceeding with the following procedures.
  • If a DTC is output for either of these ECUs, first troubleshoot it and then proceed to the troubleshooting below.
1.READ VALUE USING INTELLIGENT TESTER (RECORD OF OVERHEAT)

Use the Data List to check if the record of overheat is functioning properly.

VGRS
Tester DisplayMeasurement Item/RangeNormal ConditionDiagnostic Note
Motor Overheat Record Record of continuous overheat preventive control/Rec or UnrecRec or Unrec-
Result
ResultProceed to
"Rec" (Record of motor overheating)A
"Unrec" (No record of motor overheating)B
  • HINT:
  • If "Rec" is displayed, reset the setting to "Unrec". Enter the VGRS menu on the tester, select record clearance, and follow the prompts to set to "Unrec".
B
Go to step 3
A
2.CHECK HEAT PROTECTION FUNCTION FOR STEERING ACTUATOR

Turn the engine switch on (IG) and wait for 30 minutes until the steering actuator cools down.

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 the left and right, or the steering wheel may become off-center.
  • However, this is not a malfunction.

Check the number of turns from lock to lock.

Result
ResultProceed to
3.2 turnsA
2.7 turnsB
B
VGRS SYSTEM IS NORMAL
A
3.CHECK STEERING EFFORT

Start the engine.

Turn the steering wheel.

Measure the steering effort.

  • Standard steering effort:
  • Below 6.9 N*m (70 kgf*cm, 61 in.*lbf)
  • HINT:
  • After completing the inspection or repair, attempt to simulate the problem and then perform "Read Value Using Intelligent Tester" above again to reconfirm that the problem does not occur.
Result
Result
Result		Proceed to
OKA
NG (for 1VD-FTV with DPF)B
NG (except 1VD-FTV with DPF)C
B
GO TO POWER STEERING SYSTEM (PROBLEM SYMPTOMS TABLE) ()
C
GO TO POWER STEERING SYSTEM (PROBLEM SYMPTOMS TABLE) ()
A
4.CHECK STEERING ACTUATOR

Check for abnormal noise or vibration in the steering actuator.

  • OK:
  • Neither abnormal noise nor vibration occurs.
NG
GO TO STEERING WHEEL VIBRATES OR ABNORMAL NOISE IS HEARD FROM STEERING WHEEL ()
OK
5.CHECK STEERING CONTROL ECU (POWER SOURCE CIRCUIT)
Variable Gear Ratio Steering System - Vgrs System Stops Or Does Not Operate. VARIABLE GEAR RATIO STEERING. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Measure the voltage according to the value(s) in the table below.

  • Standard Voltage:
  • Tester ConnectionSwitch ConditionSpecified Condition
    E77-3 (IG) -
    Body ground    		Engine switch on (IG)11 to 14 V
    E77-8 (PIG) -
    Body ground

Turn the engine switch off.

Measure the resistance according to the value(s) in the table below.

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    E77-7 (PGND) -
    Body ground    		AlwaysBelow 1 Ω
Result
Result
Result		Proceed to
NGA
OK (for LHD)B
OK (for RHD)C
B
REPLACE STEERING CONTROL ECU ()
C
REPLACE STEERING CONTROL ECU ()
A
REPAIR OR REPLACE HARNESS OR CONNECTOR
VARIABLE GEAR RATIO STEERING
Land Cruiser URJ200 URJ202 GRJ200 VDJ200
VARIABLE GEAR RATIO STEERING SYSTEM