Dtc B2414 Steering Position Sensor Malfunction

Body Electrical. Lexus Is250, Is220D. Gse20 Ale20
Lighting. Lexus Is250, Is220D. Gse20 Ale20

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DTC (BRAKE CONTROL SYSTEM)

READ VALUE OF INTELLIGENT TESTER

CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR - AFS ECU)

CHECK AFS ECU

DTC B2414 Steering Position Sensor Malfunction


DESCRIPTION

The AFS ECU receives signals regarding the swerve-angle from the steering angle 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 angle sensor
  2. Wire harness or connector
  3. AFS ECU

WIRING DIAGRAM


Lexus Is250, Is220D. Gse20 Ale20.Lighting.Lighting System. Dtc B2414 Steering Position Sensor Malfunction


INSPECTION PROCEDURE

1.CHECK DTC (BRAKE CONTROL SYSTEM)

  1. Check that the steering sensor DTC (brake control system DTC) is not output.

    Result:

    Result
    		Proceed to
    DTC (C1231/31) is not output
    		A
    DTC (C1231/31) is output
    		B
    (Click here)


B
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS (BRAKE CONTROL SYSTEM)
A


2.READ VALUE OF INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the intelligent tester main switch on.

  1. Select the items below in the DATA LIST, and read the displays on the intelligent tester.


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

Result:

Result
Proceed to
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 3
A

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

3.CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR - AFS ECU)


    Lexus Is250, Is220D. Gse20 Ale20.Lighting.Lighting System. Dtc B2414 Steering Position Sensor Malfunction

  1. Disconnect the J23 steering angle sensor connector.

  1. Disconnect the A27 AFS ECU connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    J23-7 (SS1-) - A27-8 (SS-)
    		Always
    		Below 1 Ω
    J23-8 (SS1+) - A27-7 (SS+)
    		Always
    		Below 1 Ω
    A27-8 (SS1-) - Body ground
    		Always
    		10 kΩ or higher
    A27-7 (SS1+) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK AFS ECU


    Lexus Is250, Is220D. Gse20 Ale20.Lighting.Lighting System. Dtc B2414 Steering Position Sensor Malfunction

  1. Reconnect the A27 AFS ECU connector.

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

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    A27-7 (SS+) - A27-8 (SS-)
    		Engine switch on (IG)
    		Approx. 5 V


OK
REPLACE STEERING ANGLE SENSOR
NG

REPLACE AFS ECU