DTC B2282: Vehicle Speed Signal Malfunction [08/2014 - ]: 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 → 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, 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   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 speed signal/Stop or Run	Stop: 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   12 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY 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 L27 connector from the combination meter assembly.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L135-14 (SPDI) - L27-7 (+S)	Always	Below 1 Ω
   L135-14 (SPDI) - Body ground	Always	10 kΩ or higher

NG → See step   8 

OK: Go to next step 

1. Remove the combination meter. Refer to REMOVAL [08/2014 - ] .

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Reconnect the L27 connector to the combination meter assembly.
3. Reconnect the L135 connector to the power management control ECU.
4. Connect an oscilloscope to terminal L27-7 (+S) and body ground.
5. Turn the power 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   13 

OK → See step   14 

1. Disconnect the 3A connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L27-7 (+S) - 3A-26	Always	Below 1 Ω
   L27-7 (+S) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (COMBINATION METER - NO. 3 JUNCTION BLOCK) 

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
   L135-14 (SPDI) - 3A-2	Always	Below 1 Ω
   L135-14 (SPDI) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - NO. 3 JUNCTION BLOCK) 

OK → REPLACE NO. 3 JUNCTION BLOCK