Dtc B2415 Vehicle Speed Sensor Malfunction

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

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

CHECK WIRE HARNESS (SKID CONTROL ECU WITH ACTUATOR - AFS ECU)

CHECK AFS ECU

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

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

CHECK WIRE HARNESS (SKID CONTROL ECU - AFS ECU)

CHECK AFS ECU

DTC B2415 Vehicle Speed Sensor Malfunction


DESCRIPTION

3GR - FE, 3GR - FSE:
The AFS ECU receives signals regarding the front wheel speed from the skid control ECU.

DTC No.
DTC Detection Condition
Trouble Area
B2415
  1. Malfunction in skid control ECU
  2. Open or short in vehicle speed sensor circuit
  1. Skid control ECU with actuator
  2. Wire harness or connector
  3. AFS ECU

WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.Lighting.Lighting System. Dtc B2415 Vehicle Speed Sensor Malfunction


INSPECTION PROCEDURE

1.CHECK DTC (ABS WITH EBD & BA & TRC & VSC SYSTEM)

  1. Check the DTC of ABS with EBD & BA & TRC & VSC systems.

    OK:
    Normal system code is output.


NG
GO TO FLOWCHART
OK


2.CHECK WIRE HARNESS (SKID CONTROL ECU WITH ACTUATOR - AFS ECU)
Lexus Gs430, Gs300. Uzs190 Grs190.Lighting.Lighting System. Dtc B2415 Vehicle Speed Sensor Malfunction

  1. Disconnect the A48 skid control ECU with actuator connector.

  1. Disconnect the A30 AFS ECU connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A48-37 (FRO) - A30-7 (SPDR)
    		Always
    		Below 1 Ω
    A48-38 (FLO) - A30-6 (SPDL)
    		Always
    		Below 1 Ω
    A30-7 (SPDR) - Body ground
    		Always
    		10 kΩ or higher
    A30-6 (SPDL) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


3.CHECK AFS ECU
Lexus Gs430, Gs300. Uzs190 Grs190.Lighting.Lighting System. Dtc B2415 Vehicle Speed Sensor Malfunction

  1. Reconnect the A30 AFS ECU connector.



  1. Measure the voltage of the connector.

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Voltage
    A30-6 (SPDL) - Body ground
    		Vehicle is driving at approx.
    30 km/h (19 mph)
    		0 to 14 V
    Pulse generation (see waveform 1)
    A30-7 (SPDR) - Body ground
    		Vehicle is driving at approx.
    30 km/h (19 mph)
    		0 to 14 V
    Pulse generation (see waveform 1)


      Lexus Gs430, Gs300. Uzs190 Grs190.Lighting.Lighting System. Dtc B2415 Vehicle Speed Sensor Malfunction

    1. Waveform 1: Oscilloscope wave

      Item
      		Contents
      Tool setting
      		5 V / DIV., 2 msec. / DIV.
      Vehicle condition
      		Vehicle is driving at approximately 30 km/h (19 mph)
      OK:
      Waveform is output as shown in the illustration.

      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 SKID CONTROL ECU ASSEMBLY
A

REPLACE AFS ECU


DESCRIPTION

3UZ - FE:
The AFS ECU receives signals regarding the front wheel speed from the skid control ECU.

DTC No.
DTC Detection Condition
Trouble Area
B2415
  1. Malfunction in skid control ECU
  2. Open or short in vehicle speed sensor circuit
  1. Skid control ECU
  2. Wire harness or connector
  3. AFS ECU

WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.Lighting.Lighting System. Dtc B2415 Vehicle Speed Sensor Malfunction


INSPECTION PROCEDURE

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

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

    OK:
    Normal system code is output.


NG
GO TO FLOWCHART
OK


2.CHECK WIRE HARNESS (SKID CONTROL ECU - AFS ECU)

Lexus Gs430, Gs300. Uzs190 Grs190.Lighting.Lighting System. Dtc B2415 Vehicle Speed Sensor Malfunction

  1. Disconnect the A30 AFS ECU connector.

  1. Disconnect the A13 and A15 skid control ECU connectors.

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

    Standard resistance:

    Tester Connection
    		Condition
    		Specified Condition
    A13-10 (FRO) - A28-7 (SPDR)
    		Always
    		Below 1 Ω
    A15-10 (FLO) - A28-6 (SPDL)
    		Always
    		Below 1 Ω
    A30-7 (SPDR) - Body ground
    		Always
    		10 kΩ or higher
    A30-6 (SPDL) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


3.CHECK AFS ECU
Lexus Gs430, Gs300. Uzs190 Grs190.Lighting.Lighting System. Dtc B2415 Vehicle Speed Sensor Malfunction

  1. Reconnect the A30 AFS ECU connector.



  1. Measure the voltage of the connector.

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    A30-6 (SPDL) - Body ground
    		Vehicle is driving at approx.
    30 km/h (19 mph)
    		0 to 14 V
    Pulse generation (see waveform 1)
    A30-7 (SPDR) - Body ground
    		Vehicle is driving at approx.
    30 km/h (19 mph)
    		0 to 14 V
    Pulse generation (see waveform 1)


      Lexus Gs430, Gs300. Uzs190 Grs190.Lighting.Lighting System. Dtc B2415 Vehicle Speed Sensor Malfunction

    1. Waveform 1: Oscilloscope wave

      Item
      		Contents
      Tool setting
      		5 V / DIV., 2 msec. / DIV.
      Vehicle condition
      		Vehicle is driving at approximately 30 km/h (19 mph)
      OK:
      Waveform is output as shown in the illustration.

      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 SKID CONTROL ECU ASSEMBLY
A

REPAIR OR REPLACE HARNESS AND CONNECTOR