DTC    B2415    Vehicle Speed Sensor Malfunction

for Preparation Click here


DESCRIPTION

The AFS ECU receives the vehicle speed signal of the rear wheels from the skid control ECU.

DTC No.
DTC Detecting Condition
Trouble Area
B2415
  1. Malfunction of skid control ECU
  2. Open or short of vehicle speed sensor circuit
  1. Skid control ECU
  2. Harness or connector
  3. AFS ECU

WIRING DIAGRAM


B110589E02


INSPECTION PROCEDURE

1.CHECK DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)

  1. Check the DTC of electronically controlled brake system (Click here).

    OK:
    DTC is not output.



NG
GO TO FLOW CHART
OK


2.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - AFS ECU)


    B110625E02

  1. Disconnect the skid control ECU connector and AFS ECU connector.

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

    Resistance:
    Tester connection
    		Condition
    		Specified condition
    PRO (S39-33) - SPDR (A18-7)
    		Always
    		Below 1 Ω
    RLO (S40-25) - SPDL (A18-6)
    		Always
    		Below 1 Ω
    SPDR (A18-7) - Body ground
    		Always
    		10 kΩ or higher
    SPDL (A18-6) - Body ground
    		Always
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.INSPECT AFS ECU


    E069258E02

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

    Voltage:
    Tester connection
    		Condition
    		Specified condition
    SPDL (A18-6) - E1 (A17-1)
    		Drive at about 30 km/h (19 mph)
    		0 to 14 V
    Pulse generation(*1)
    SPDR (A18-7) - E1 (A17-1)
    		Drive at about 30 km/h (19 mph)
    		0 to 14 V
    Pulse generation (*1)



    I030993

  1. *1: Oscilloscope wave

    HINT:
    1. Gauge set: 5 V/DIV, 2 ms/DIV
    2. Condition: Drive at about 30 km/h (19 mph)

    Result:
    Condition
    		Proceed to
    OK (When checking from the DTC)
    		A
    OK (When checking from the PROBLEM SYMPTOMS TABLE)
    		B
    NG
    		C



B
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

C
REPLACE SKID CONTROL ECU
A

REPLACE AFS ECU