Dtc B2414 Steering Position Sensor Malfunction

Body Electrical. Lexus Gs430, Gs300. Uzs190 Grs190
Lighting. Lexus Gs430, Gs300. Uzs190 Grs190

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE OF INTELLIGENT TESTER

CHECK DTC (ABS WITH EBD & BA & TRAC & VSC SYSTEM)

CHECK VEHICLE CONDITION

CHECK WIRE HARNESS (STEERING SENSOR - AFS ECU)

CHECK AFS ECU

CHECK WIRE HARNESS (STEERING CONTROL ECU - AFS ECU)

CHECK AFS ECU

DTC B2414 Steering Position Sensor Malfunction


DESCRIPTION

The AFS ECU receives signals regarding the swerve-angle from the steering sensor in the steering wheel.

DTC No.
DTC Detection Condition
Trouble Area
B2414
  1. Malfunction in steering sensor
  2. Open or short in steering sensor circuit
  1. Steering sensor (w/o Variable gear ratio steering system)
  2. Steering control ECU (w/ Variable gear ratio steering system)
  3. Wire harness or connector
  4. AFS ECU

WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.Lighting.Lighting System. Dtc B2414 Steering Position Sensor Malfunction


INSPECTION PROCEDURE

1.READ VALUE OF INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG) and turn the intelligent tester main switch on.

  1. Select the items below in the Data List, and read the displays on the intelligent tester.

    AFS ECU:

    Item
    		Measurement Item / Display (Range)
    		Normal Condition
    		Diagnostic Note
    Steer Sens Sig
    		Steering sensor signal value /
    -384°to -382.5°
    		Approx. 0°
    (When steering wheel is straight)
    		-
    OK:
    Condition sign can be displayed.

Result
OK (When checking from PROBLEM SYMPTOMS TABLE)
A
OK (When checking from DIAGNOSTIC TROUBLE CODE CHART)
B
NG
C


B
REPLACE AFS ECU

C
Go to step 2
A

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2.CHECK DTC (ABS WITH EBD & BA & TRAC & VSC SYSTEM)

  1. Check the DTC of ABS with EBD & BA & TRAC & VSC system.

    OK:
    Normal system code is output.


NG
GO TO FLOWCHART
OK


3.CHECK VEHICLE CONDITION

  1. Check vehicle condition.

    Result
    w/o Variable steering gear ratio control
    		A
    w/ Variable steering gear ratio control
    		B


B
Go to step 6
A


4.CHECK WIRE HARNESS (STEERING SENSOR - AFS ECU)


    Lexus Gs430, Gs300. Uzs190 Grs190.Lighting.Lighting System. Dtc B2414 Steering Position Sensor Malfunction

  1. Disconnect the L19 steering sensor connector .

  1. Disconnect the A31 AFS ECU connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    L19-7 (SS1-) - A31-8 (SS-)
    		Always
    		Below 1 Ω
    L19-8 (SS1+) - A31-7 (SS+)
    		Always
    		Below 1 Ω
    A31-8 (SS1-) - Body ground
    		Always
    		10 kΩ or higher
    A31-7 (SS1+) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


5.CHECK AFS ECU
Lexus Gs430, Gs300. Uzs190 Grs190.Lighting.Lighting System. Dtc B2414 Steering Position Sensor Malfunction

  1. Reconnect the L19 steering sensor connector.

  1. Reconnect the A31 AFS ECU connector.

  1. Measure the voltage of the connector.

    Standard voltage:

    Tester Connection
    		Condition
    		Specified Condition
    A31-7 (SS+) - A31-8 (SS-)
    		Engine switch on (IG)
    		0 to 5 V
    (Pulse generation)

    Result
    OK (When checking from DIAGNOSTIC TROUBLE CODE CHART)
    		A
    OK (When checking from PROBLEM SYMPTOMS TABLE)
    		B
    NG
    		C


B
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

C
REPLACE STEERING SENSOR
A

REPLACE AFS ECU

6.CHECK WIRE HARNESS (STEERING CONTROL ECU - AFS ECU)
Lexus Gs430, Gs300. Uzs190 Grs190.Lighting.Lighting System. Dtc B2414 Steering Position Sensor Malfunction

  1. Disconnect the A42 steering control ECU connector.

  1. Disconnect the A31 AFS ECU connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A42-5 (AFS-) - A31-8 (SS-)
    		Always
    		Below 1 Ω
    A42-2 (AFS+) - A31-7 (SS+)
    		Always
    		Below 1 Ω
    A31-8 (SS1-) - Body ground
    		Always
    		10 kΩ or higher
    A31-7 (SS1+) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


7.CHECK AFS ECU
Lexus Gs430, Gs300. Uzs190 Grs190.Lighting.Lighting System. Dtc B2414 Steering Position Sensor Malfunction

  1. Reconnect the A31 AFS ECU connector.

  1. Measure the voltage of the connector.

    Standard voltage:

    Tester Connection
    		Condition
    		Specified Condition
    A31-7 (SS+) - A31-8 (SS-)
    		Engine switch on (IG)
    		0 to 5 V
    (Pulse generation)

    Result
    OK (When checking from DIAGNOSTIC TROUBLE CODE CHART)
    		A
    OK (When checking from PROBLEM SYMPTOMS TABLE)
    		B
    NG
    		C


B
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

C
REPLACE STEERING CONTROL ECU
A

REPLACE AFS ECU