DTC B2415: Vehicle Speed Sensor Malfunction: Procedure

1. Check that vehicle stability control system DTCs are not output. Refer to PRECAUTION .

   Result

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

B → REPAIR CIRCUITS INDICATED BY OUTPUT DTCS 

A: Go to next step 

1. Disconnect the A58 skid control ECU with actuator connector.
   Fig 1: Identifying A58 Skid Control ECU With Actuator Connector

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2. Disconnect the A28 AFS 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 

1. Disconnect the A28 AFS ECU connector.
   Fig 2: Identifying A28 AFS ECU Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Condition	Specified Voltage
   A28-6 (SPDL) - Body ground	Vehicle is driving at approx. 30 km/h (19 mph)	0 to 5 V Pulse generation (see waveform 1)
   A28-7 (SPDR) - Body ground	Vehicle is driving at approx. 30 km/h (19 mph)	0 to 5 V Pulse generation (see waveform 1)

   1. Waveform 1: Oscilloscope wave
      Fig 3: Signal Waveform Graph (Waveform 1)

      Courtesy 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 → REPLACE BRAKE ACTUATOR ASSEMBLY 

B → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

A → REPLACE AFS ECU