Dtc B2282 Vehicle Speed Signal Malfunction


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU)

CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)

CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - COMBINATION METER)

READ VALUE USING INTELLIGENT TESTER (VEHICLE SPEED SIGNAL)

CHECK POWER MANAGEMENT CONTROL ECU

DTC B2282 Vehicle Speed Signal Malfunction

DTC B2283 Vehicle Speed Sensor Malfunction


DESCRIPTION

The power management control ECU and the combination meter are connected by a cable and the CAN communication lines. This DTC is stored when the vehicle speed signal information from the cable and the vehicle speed signal information from the CAN communication line are inconsistent.
HINT:
When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) battery terminal, the power source mode is reset to on (IG). When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

DTC Code
DTC Detection Condition
Trouble Area
B2282
The vehicle speed signal information from the cable and the vehicle speed signal information from the CAN communication line are inconsistent.
  1. CAN communication system
  2. Power management control ECU
  3. Meter/gauge system
  4. Harness or connector
The skid control ECU converts signals from the speed sensor into 4-pulse signals and sends them to the combination meter. After these signals are converted into a more precise rectangular waveform by the waveform shaping circuit inside the combination meter, they are then transmitted to the power management control ECU. The power management control ECU determines the vehicle speed based on the frequencies of these pulse signals.

DTC Code
DTC Detection Condition
Trouble Area
B2283
Both conditions are met:
  1. The vehicle speed decreases significantly.
  2. The vehicle speed does not correspond with the engine speed.
  1. Power management control ECU
  2. Meter/gauge system
  3. Skid control ECU
  4. Speed sensor
  5. Harness or connector

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HINT:
  1. A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter. The signal is changed to a pulse signal at the transistor in the combination meter. Each ECU controls its respective system based on the pulse signal.
  2. If a short circuit occurs in an ECU, all systems related to the components in the diagram above will not operate normally.

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2282 Vehicle Speed Signal Malfunction


INSPECTION PROCEDURE

NOTICE:
  1. When using the intelligent tester with the engine switch off to troubleshoot: Connect the intelligent tester to the vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the intelligent tester and vehicle begins.
  2. Before performing the inspection, check that there are no problems related to the CAN communication system and LIN communication system.
  3. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2282 Vehicle Speed Signal Malfunction

  1. Disconnect the G51 power management control ECU connector.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    G51-2 (AM21) - Body ground
    		Always
    		9.5 to 14 V
    G51-1 (AM22) - Body ground
    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to Power Management Control ECU)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)

  1. Disconnect the G51 power management control ECU connector.



    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2282 Vehicle Speed Signal Malfunction

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G51-6 (GND) - Body ground
    		Always
    		Below 1 Ω
    G51-5 (GND2) - Body ground
    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to Power Management Control ECU)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - COMBINATION METER)

  1. Disconnect the G51 power management control ECU connector.

  1. Disconnect the G6 combination meter assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G51-23 (SPD) - G6-32 (+S)
    		Always
    		Below 1 Ω
    G51-23 (SPD) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.READ VALUE USING INTELLIGENT TESTER (VEHICLE SPEED SIGNAL)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the intelligent tester on.

  1. Enter the following menus: Body / Power Source Control / Data List.

  1. According to the display on the intelligent tester, read the Data List.

    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 driven (5 km/h (3 mph) or higher)
    		-
    OK:
    Stop (vehicle stopped) or Run (vehicle driven) appears on the screen according the vehicle speed.


NG
Go to step 5
OK

GO TO METER/GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (LandCruiser RM000002Z4L055X.html)

5.CHECK POWER MANAGEMENT CONTROL ECU


  1. Using an oscilloscope, check the vehicle speed input signal waveform from the combination meter at the terminal of the power management control ECU.


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2282 Vehicle Speed Signal Malfunction


    Text in Illustration
    *a
    		Component with harness connected
    (Power Management Control ECU)
    		-
    		-


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2282 Vehicle Speed Signal Malfunction

  1. Check the signal waveform according to the condition(s) in the table below.

    Standard Frequency:
    Tester Connection
    		Tool Setting
    		Condition
    		Specified Condition
    G51-23 (SPD) - Body ground
    		5 V/DIV., 10 ms./DIV.
    		Engine switch on (IG), vehicle being driven at approx. 5 km/h (3 mph)
    		Correct waveform as shown in illustration


NG
GO TO METER/GAUGE SYSTEM (TERMINALS OF ECU) (LandCruiser RM0000012GA0C7X.html)
OK

REPLACE POWER MANAGEMENT CONTROL ECU (LandCruiser RM0000039R5026X.html)