DTC B2282: Vehicle Speed Signal Malfunction; DTC B2283: Vehicle Speed Sensor Malfunction: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Chassis / ABS/VSC/TRC / Data List.
5. According to the display on the Techstream, read the Data List.
   ABS/VSC/TRC
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Vehicle Speed	Vehicle speed/Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph)	Almost same as actual vehicle speed (Speedometer tester)	-

   OK

   The Data List value is approximately the same as the actual vehicle speed.

NG → See step   7 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Power Source Control / Data List.
5. According to the display on the Techstream, read the Data List.
   POWER SOURCE CONTROL
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Vehicle Speed Signal	Vehicle moving or stationary / Stop or Run	Run: Vehicle moving at 5 km/h (3 mph) or more Stop: Vehicle stopped	-

   OK

   Stop (vehicle stopped) or Run (vehicle moving) appears on the screen according to the vehicle speed.

NG → See step   3 

OK → See step   7 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE 

OK: Go to next step 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the D41 certification ECU (smart key ECU assembly) connector.
2. Disconnect the A5 brake actuator assembly (skid control ECU) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D41-27 (SPD) - A5-2 (SPD)	Always	Below 1 Ω
   D41-27 (SPD) or A5-2 (SPD) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 1: Inspect Certification ECU (Smart Key ECU Assembly) With Waveform

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Reconnect the A5 brake actuator assembly (skid control ECU) connector.
2. Reconnect the D41 certification ECU (smart key ECU assembly) connector.
3. Using an oscilloscope, check the vehicle speed input signal waveform from the combination meter at the terminal of the certification ECU (smart key ECU assembly).
   1. Check the signal waveform according to the conditions in the table below.

      Item	Content
      Tester Connection	D41-27 (SPD) - D48-11 (GND)
      Tool Setting	5 V/DIV., 100 ms./DIV.
      Condition	Engine switch on (IG), vehicle being driven at approx. 5 km/h (3 mph)

      OK

      The waveform is similar to that shown in the illustration.

      HINT: 

      When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.

NG → See step   8 

OK → See step   9