Meter / Gauge System Speedometer Malfunction


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK CAN COMMUNICATION SYSTEM

PERFORM ACTIVE TEST USING GTS (SPEED METER OPERATION)

READ VALUE USING GTS (VEHICLE SPEED METER)

READ VALUE USING GTS (FR/FL/RR/RL WHEEL SPEED)

REPLACE SKID CONTROL ECU

METER / GAUGE SYSTEM - Speedometer Malfunction


DESCRIPTION

The meter CPU receives vehicle speed signals from the skid control ECU via the CAN communication system. The speed sensor detects the wheel speed and sends the appropriate signals to the skid control ECU. The skid control ECU supplies power to the vehicle speed sensor. The skid control ECU detects vehicle speed signals based on the pulses of the voltage.

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Meter Gauge Display.Meter / Gauge System.Meter / Gauge System Speedometer Malfunction


INSPECTION PROCEDURE

NOTICE:
If the vehicle speed is outside the allowable range when tested, perform the on-vehicle inspection (LandCruiser RM000002Z4Q040X.html).
HINT:
Before starting the following inspection, check tire size and tire air pressure.
1.CHECK CAN COMMUNICATION SYSTEM

  1. Check if a CAN communication DTC is output.

    1. for LHD with Entry and Start System (LandCruiser RM000000WIB0ECX.html).

    2. for LHD without Entry and Start System (LandCruiser RM000000WIB0EDX.html).

    3. for RHD with Entry and Start System (LandCruiser RM000000WIB0EEX.html).

    4. for RHD without Entry and Start System (LandCruiser RM000000WIB0EFX.html).

      Result
      Result
      		Proceed to
      CAN communication DTC is not output.
      		A
      CAN communication DTC is output. (for LHD with entry and start system)
      		B
      CAN communication DTC is output. (for LHD without entry and start system)
      		C
      CAN communication DTC is output. (for RHD with entry and start system)
      		D
      CAN communication DTC is output. (for RHD without entry and start system)
      		E


B
GO TO CAN COMMUNICATION SYSTEM (LandCruiser RM000001RSO0C5X.html)

C
GO TO CAN COMMUNICATION SYSTEM (LandCruiser RM000001RSO0BYX.html)

D
GO TO CAN COMMUNICATION SYSTEM (LandCruiser RM000001RSO0BZX.html)

E
GO TO CAN COMMUNICATION SYSTEM (LandCruiser RM000001RSO0C0X.html)
A


2.PERFORM ACTIVE TEST USING GTS (SPEED METER OPERATION)

  1. Using the GTS, perform the Active Test (LandCruiser RM0000012G70JTX.html).

    Combination Meter
    Tester Display
    		Test Part
    		Control Range
    		Diagnostic Note
    Speed Meter Operation
    		Speedometer
    1. OFF, 0, 40, 80, 120, 160 or 200 (km/h) (for km/h)
    2. OFF, 0, 40, 80 or , 120 (mph) (for mph)
    		There is a deviation in the values displayed on the speedometer display (Control range → Speedometer)
    for km/h (except Australia):
    1. 40 → 41.7 to 46.2
    2. 80 → 83.4 to 88.4
    3. 120 → 125.1 to 130.6
    4. 160 → 166.2 to 173.2
    for km/h (for Australia):
    1. 40 → 40.8 to 45.3
    2. 80 → 81.6 to 86.6
    3. 120 → 122.4 to 127.4
    4. 160 → 163.2 to 168.2
    for mph:
    1. 40 → 42 to 44.5
    2. 80 → 83.1 to 87.1
    OK:
    Speedometer indication is normal.


NG
REPLACE COMBINATION METER ASSEMBLY (LandCruiser RM000003QKY01CX.html)
OK


3.READ VALUE USING GTS (VEHICLE SPEED METER)

  1. Using the GTS, read the Data List (LandCruiser RM0000012G70JTX.html).

    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 GTS is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).


NG
Go to step 4
OK

REPLACE COMBINATION METER ASSEMBLY (LandCruiser RM000003QKY01CX.html)

4.READ VALUE USING GTS (FR/FL/RR/RL WHEEL SPEED)

  1. Using the GTS, read the Data List (LandCruiser RM0000012G70JTX.html).

    ABS/VSC/TRC
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    FR Wheel Speed
    		Vehicle speed/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    		Almost same as actual vehicle speed
    		-
    FL Wheel Speed
    		Vehicle speed/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    		Almost same as actual vehicle speed
    		-
    RR Wheel Speed
    		Vehicle speed/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    		Almost same as actual vehicle speed
    		-
    RL Wheel Speed
    		Vehicle speed/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    		Almost same as actual vehicle speed
    		-
    OK:
    Vehicle speed displayed on the GTS is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).
    Result
    Result
    		Proceed to
    OK
    		A
    NG (for Hydraulic Brake Booster)
    		B
    NG (for 2TR-FE, Vacuum Brake Booster)
    		C
    NG (for 5L-E, Vacuum Brake Booster)
    		D


B
GO TO VEHICLE STABILITY CONTROL SYSTEM (LandCruiser RM000001DWP03DX.html)

C
GO TO VEHICLE STABILITY CONTROL SYSTEM (LandCruiser RM000000XHK0M7X.html)

D
GO TO ANTI-LOCK BRAKE SYSTEM (LandCruiser RM000000XHK0M6X.html)
A


5.REPLACE SKID CONTROL ECU

  1. Replace the skid control ECU with a new or normally functioning one.

    1. for LHD Hydraulic Brake Booster (LandCruiser RM00000171U02DX.html).

    2. for RHD Hydraulic Brake Booster (LandCruiser RM00000171U02EX.html).

    3. for 2TR-FE, 5L-E (LandCruiser RM0000034UX02TX.html).

  1. Check that the operation of the speedometer returns to normal.

    OK:
    The operation of the speedometer returns to normal.


NG
REPLACE COMBINATION METER ASSEMBLY (LandCruiser RM000003QKY01CX.html)
OK

END (SKID CONTROL ECU IS DEFECTIVE)