DTC B2282: Vehicle Speed Signal Malfunction: Procedure

1. Check if CAN communication DTCs are output.

   HINT: 

   If any DTCs for CAN communication system malfunction are output, inspect those DTCs first.

   OK

   CAN communication DTC is not output.

NG → GO TO CAN COMMUNICATION SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART 

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 / Combination Meter / Data List.
5. Check the Data List for proper functioning of the vehicle speed signal.
   COMBINATION METER
   
   

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

   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   10 

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 speed signal/Stop or Run	Sop: Vehicle stopped Run: Vehicle running	-

   OK

   Stop (vehicle is stopped) and Run (vehicle is running) appear on the screen.

NG → See step   4 

OK → See step   11 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) 

OK: Go to next step 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) 

OK: Go to next step 

1. Disconnect the E1 connector from the combination meter assembly.
   Fig 1: Checking Combination Meter Assembly And Power Management Control ECU Connector Terminals

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D43-23 (SUT) - E1-16 (+S)	Always	Below 1 Ω
   D43-23 (SUT) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1

   Front view of wire harness connector (to Power Management Control ECU)

   *2

   Front view of wire harness connector (to Combination Meter Assembly)

NG → See step   8 

OK: Go to next step 

1. Remove the combination meter. Refer to REMOVAL .
   Fig 2: Inspecting Combination Meter Connector And Signal Waveform

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reconnect the E1 connector to the combination meter assembly.
3. Reconnect the D43 connector to the power management control ECU.
4. Connect an oscilloscope to terminal E1-16 (+S) and body ground.
5. Turn the engine switch on (IG).
6. Turn the wheel slowly.
7. Check the signal waveform according to the condition(s) in the table below.

   Item	Condition
   Tool setting	5 V/DIV., 20 ms./DIV.
   Vehicle condition	Driving at approx. 20 km/h (12 mph)

   OK

   The waveform is displayed as shown in the illustration.

   TEXT IN ILLUSTRATION
   
   

   *1	Component with harness connected (Combination Meter Assembly)

   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   12 

OK → See step   13 

1. Disconnect the E31 connector from the junction connector.
   Fig 3: Checking Combination Meter Assembly And Junction Connector Terminals

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E1-16 (+S) - E31-19	Always	Below 1 Ω
   E1-16 (+S) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Combination Meter Assembly)
   *2	Front view of wire harness connector (to Junction Connector)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (COMBINATION METER - JUNCTION CONNECTOR) 

OK: Go to next step 

1. Disconnect the D57 connector from the junction connector.
   Fig 4: Identifying Power Management Control ECU And Junction Connector Terminals

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D43-23 (SUT) - D57-13	Always	Below 1 Ω
   D43-23 (SUT) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1

   Front view of wire harness connector (to Power Management Control ECU)

   *2

   Front view of wire harness connector (to Junction Connector)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - JUNCTION CONNECTOR) 

OK → REPLACE JUNCTION CONNECTOR