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DTC B2415: Vehicle Speed Sensor Malfunction: Procedure

  1. CHECK DTC (VEHICLE STABILITY CONTROL SYSTEM) 
    1. Check that vehicle stability control system DTCs are not output.

      Result

      Result Proceed to
      VSC system DTC is not output A
      VSC system DTC is output B

    B → See step   5 

    A: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - AFS ECU) 
    1. Disconnect the A28 AFS ECU connector.
      Fig 1: Identifying A58 And A28 Connector Terminals
      GTY272448Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Front view of wire harness connector
      (to Skid Control ECU)
      *2 Front view of wire harness connector
      (to AFS ECU)
    2. Disconnect the A58 skid control ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A58-10 (FRO) - A28-7 (SPDR) Always Below 1 Ω
      A58-9 (FLO) - A28-6 (SPDL) Always Below 1 Ω
      A28-7 (SPDR) - Body ground Always 10 kΩ or higher
      A28-6 (SPDL) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  3. CHECK AFS ECU 
    1. Disconnect the A28 AFS ECU connector.
      Fig 2: Identifying A28 Connector Terminals
      GTY261858Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Front view of wire harness connector
      (to AFS ECU)
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      A28-6 (SPDL) - Body ground Vehicle is driving at approx. 30 km/h (19 mph) 0 to 5 V
      Pulse generation
      (see Fig 3)
      A28-7 (SPDR) - Body ground Vehicle is driving at approx. 30 km/h (19 mph) 0 to 5 V
      Pulse generation
      (see Fig 3)
      1. Waveform 1: Oscilloscope wave
        Fig 3: Identifying Waveform 1
        GTY108720Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Item Contents
        Tool setting 2 V/DIV., 2 ms./DIV.
        Vehicle condition Vehicle is driving at approximately 30 km/h (19 mph)

        OK

        Waveform is output as shown in the illustration.

        Result

        Result Proceed to
        OK (When checking from Diagnostic Trouble Code Chart) A
        OK (When checking from Problem Symptoms Table) B
        NG C

    C → See step   7 

    B → See step   6 

    A → See step   4 

  4. REPLACE AFS ECU. Refer to  COMPONENTS 
  5. REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to  DIAGNOSTIC TROUBLE CODE CHART 
  6. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE 
  7. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to  COMPONENTS 
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