DTC B2282: Vehicle Speed Signal Malfunction; DTC B2283: Vehicle Speed Sensor Malfunction [08/2013 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power 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, Max.: 255	Almost same as actual vehicle speed (Speedometer tester)	-

   OK

   Vehicle speed displayed on the Techstream is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).

NG → See step   9 

OK: Go to next step 

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

   On the Techstream screen, the display changes between Stop and Run as shown in the chart above.

NG → See step   3 

OK → See step   10 

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 H1 power management control ECU connector.
2. Disconnect the H14 combination meter assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H1-14 (SPDI) - H14-19 (+S)	Always	Below 1 Ω
   H1-14 (SPDI) or H14-19 (+S) - Body ground	Always	10 kΩ or higher

NG → See step   7 

OK: Go to next step 

1. Reconnect the H1 power management control ECU connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Reconnect the H14 combination meter assembly connector.
3. Connect an oscilloscope to terminal H1-14 (SPDI) and H1-6 (E1).
4. Turn the power switch on (IG).
5. Check the signal waveform according to the condition(s) in the table below.

   Item	Condition
   Tester Connection	H1-14 (SPDI) - H1-6 (E1)
   Tool Setting	5 V/DIV., 20 ms./DIV.
   Condition	Power 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: 

   The wavelength becomes shorter as the vehicle speed increases.

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Power Management Control ECU)

NG → See step   11 

OK → See step   12 

1. Disconnect the H115 junction connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H14-19 (+S) - H115-20	Always	Below 1 Ω
   H14-19 (+S) or H115-20 - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the H114 junction connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H1-14 (SPDI) - H114-14	Always	Below 1 Ω
   H1-14 (SPDI) or H114-14 - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE JUNCTION CONNECTOR