DTC B2282: Vehicle Speed Signal Malfunction: Procedure

1. Check if CAN communication DTCs are output.

   HINT: 

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

   OK

   CAN communication DTC is not output.

NG → See step   10 

OK: Go to next step 

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. 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 km/h (0 mph), Max.: 255 km/h (158 mph)	Almost the same as actual vehicle speed	-

   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   11 

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 moving or stationary/Stop or Run	Stop: Vehicle stopped Run: Vehicle moving at 5 km/h (3 mph) or more	-

   OK

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

NG → See step   4 

OK → See step   12 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the L27 connector from the combination meter sub-assembly.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L5-14 (SPDI) - L27-15 (+S)	Always	Below 1 Ω
   L5-14 (SPDI) - Body ground	Always	10 kΩ or higher

NG → See step   8 

OK: Go to next step 

1. Remove the combination meter sub-assembly. Refer to REMOVAL .
   Fig 1: Inspecting Combination Meter Sub-Assembly With Waveform Reference

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reconnect the L27 connector to the combination meter sub-assembly.
3. Reconnect the L5 connector to the power management control ECU.
4. Connect an oscilloscope to terminal L27-15 (+S) and body ground.
5. Turn the power switch on (IG).
6. Turn a 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 similar to that shown in the illustration.

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Combination Meter Sub-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   13 

OK → See step   14 

1. Disconnect the L70 connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L27-15 (+S) - L70-32	Always	Below 1 Ω
   L27-15 (+S) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L5-14 (SPDI) - L70-22	Always	Below 1 Ω
   L5-14 (SPDI) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE JUNCTION CONNECTOR