Dtc B2282 Vehicle Speed Signal Malfunction (Cable-Information Does Not Match To Bean-Information)

Engine. Lexus Gs430, Gs300. Uzs190 Grs190
3Uz-Fe Starting. Lexus Gs430, Gs300. Uzs190 Grs190

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE OF INTELLIGENT TESTER (VEHICLE SPEED SIGNAL)

CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - COMBINATION METER)

CHECK POWER SOURCE CONTROL ECU

DTC B2282 Vehicle Speed Signal Malfunction (Cable-Information does not Match to Bean-Information)

DTC B2283 Vehicle Speed Sensor Malfunction


DESCRIPTION

The power source control ECU and the combination meter are connected by a cable and the BEAN. DTC B2282 is output when: 1) the cable information and BEAN information are inconsistent; and 2) a malfunction is detected between the vehicle speed sensor and combination meter.

DTC No.
DTC Detection Condition
Trouble Area
B2282
When both conditions below are met:
  1. Cable for BEAN information between power source control ECU and combination meter are inconsistent
  1. Malfunction is detected between vehicle speed sensor and combination meter
  1. Power source control ECU
  1. Combination meter
  1. Wire harness
The skid control ECU converts these signals into 4-pulse signals and sends them to the combination meter. After this signal is converted into a more precise rectangular waveform by the waveform shaping circuit inside the combination meter, it is then transmitted to the power source control ECU. The power source control ECU determines the vehicle speed based on the frequency of these pulse signals.

DTC No.
DTC Detection Condition
Trouble Area
B2283
When both conditions below are met:
  1. Over-deceleration in vehicle speed
  1. Vehicle speed and engine speed do not match
  1. Power source control ECU
  1. Combination meter
  1. Speed sensor
  1. Skid control ECU
  1. Wire harness

Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Starting.Starting System. Dtc B2282 Vehicle Speed Signal Malfunction (Cable-Information Does Not Match To Bean-Information)


WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Starting.Starting System. Dtc B2282 Vehicle Speed Signal Malfunction (Cable-Information Does Not Match To Bean-Information)


INSPECTION PROCEDURE

1.READ VALUE OF INTELLIGENT TESTER (VEHICLE SPEED SIGNAL)

  1. Check the Data List for proper functioning of the vehicle speed signal.


Power source control ECU:

Item
Measurement Item/Display (Range)
Normal Condition
Diagnostic Note
Vehicle Spd Sig
Vehicle speed signal/ STOP or RUN
STOP: Vehicle is stopped
RUN: Vehicle is running
-
OK:
STOP (vehicle is stopped) appears on screen.


NG
Go to step 2
OK

REPLACE POWER SOURCE CONTROL ECU

2.CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - COMBINATION METER)


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Starting.Starting System. Dtc B2282 Vehicle Speed Signal Malfunction (Cable-Information Does Not Match To Bean-Information)

  1. Disconnect the L73 ECU connector.

  1. Disconnect the L31 meter connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    L73-19 (SPD) - L31-9 (+S)
    		Below 1 Ω
    L73-19 (SPD) or L31-9 (+S) - Body ground
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


3.CHECK POWER SOURCE CONTROL ECU

  1. Temporarily replace the power source control ECU with a new or normally functioning one.

  1. Check that the engine starts normally.

    OK:
    Engine starts normally.


NG
GO TO COMBINATION METER SYSTEM
OK

END (POWER SOURCE CONTROL ECU IS FAULTY)