Lexus LX - Variable Gear Ratio Steering System Test Mode Procedure; Test Mode (VGRS Sensor Signal Check)

VARIABLE GEAR RATIO STEERING SYSTEM > TEST MODE PROCEDURE
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TEST MODE (VGRS SENSOR SIGNAL CHECK)
HINT:
When the system enters test mode, "VGRS Test Mode" is displayed on the
multi-information display.
Before entering test mode, check and repair any malfunctions indicated
by the present DTCs of the VGRS system.
By switching from normal mode to test mode, the steering angle sensor
can be read.
When entering test mode, the steering control ECU sets all the test mode
DTCs first.
When the mode is switched from test mode to normal mode, all the test
mode DTCs will be cleared.
a. Check the test mode DTCs (using the tester).
i. Turn the engine switch off.
ii. Connect the intelligent tester to the DLC3.
iii. Turn the engine switch on (IG).
iv. Turn the tester on.
v. Read the test mode DTCs by following the prompts on the tester screen.
HINT:
Refer to the intelligent tester operator's manual for further details.
b. Clear the test mode DTCs (using the tester).
i. Turn the engine switch off.
ii. Connect the intelligent tester to the DLC3.
iii. Turn the engine switch on (IG).
iv. Turn the tester on.
v. Switch the system from test mode to normal mode by following the directions on the tester screen.
HINT:
Refer to the intelligent tester operator's manual for further details.
c. Check the test mode DTCs (using SST check wire).
NOTICE:
Perform these procedures with the vehicle stopped.
i. Turn the engine switch off.
ii. Using SST, connect terminals 12 (TS) and 4 (CG) of the DLC3.
SST
09843-18040
iii. Turn the engine switch on (IG).
iv. Read 2-digit test mode DTCs from the multi-information display.