DTC B2282: Vehicle Speed Signal Malfunction; DTC B2283: Vehicle Speed Sensor Malfunction [08/2019 - 08/2021]: 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: Body Electrical / Combination Meter / Data List.
5. Read the Data List according to the display on the Techstream.
   COMBINATION METER
   
   

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

   HINT: 

   Using a speedometer tester, check the actual vehicle speed and the vehicle speed displayed on the Techstream.

   OK

   Vehicle speed displayed on the Techstream is almost the same as the actual vehicle speed measured using a speedometer tester.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO METER / GAUGE SYSTEM (Speedometer Malfunction). Refer to  Speedometer Malfunction [08/2019 - ] 

Result: 

OK 

See step  2

1. Enter the following menus: Body Electrical / Power Source Control / Data List.
2. Read the Data List according to the display on the Techstream.
   POWER SOURCE CONTROL
   
   

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

   OK

   The Techstream display changes correctly in response to the vehicle condition.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] 

Result: 

NG 

See step  3

1. Disconnect the G113 certification ECU (smart key ECU assembly) connector.
2. Disconnect the G3 combination meter assembly connector.
3. Disconnect the G44 ECM connector.
4. w/o Navigation System:

   Disconnect the H3 multi-media module receiver assembly connector.

5. w/ Navigation System:

   Disconnect the H11 multi-media module receiver assembly connector.

6. for 17 Speakers with Navigation System:

   Disconnect the R31 stereo component amplifier assembly connector.

7. for 9 Speakers with Navigation System:

   Disconnect the H21 stereo component amplifier assembly connector.

8. w/o Navigation System:

   Disconnect the H22 stereo component amplifier assembly connector.

9. w/ Rain Sensor:

   Disconnect the G118 windshield wiper switch assembly connector.

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

    Standard Resistance

    Tester Connection	Condition	Specified Condition
    G113-5 (+S) - G3-17 (SPD)	Always	Below 1 Ω
    G113-5 (+S) or G3-17 (SPD)) - Other terminals and body ground	Always	10 kΩ or higher

11. Reconnect the G113 certification ECU (smart key ECU assembly) connector.
12. Reconnect the G3 combination meter assembly connector

    Result

    Proceed to
    OK
    NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Using an oscilloscope, check the waveform.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a

   Component with harness connected (Certification ECU (Smart Key ECU Assembly))

   *b

   Waveform

   OK

   Tester Connection	Condition	Tool Setting	Specified Condition
   G113-5 (SPD) - G113-11 (E)	Vehicle being driven at approximately 20 km/h (12 mph)	5 V/DIV., 20 ms./DIV.	Pulse generation (See waveform)

   HINT: 

   The wavelength becomes shorter as the vehicle speed increases.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2019 - 08/2021] 

Result: 

NG 

GO TO METER / GAUGE SYSTEM (Speed Signal Circuit). Refer to  Speed Signal Circuit [08/2019 - 08/2021]