METER / GAUGE SYSTEM > Speedometer Malfunction

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WIRING DIAGRAM


E110183E02


INSPECTION PROCEDURE

1.PERFORM ACTIVE TEST BY INTELLIGENT TESTER

  1. Operate the intelligent tester according to the steps on the display and select "ACTIVE TEST".

    METER 
    Item
    		Test Details
    		Diagnostic Note
    Speed Meter Operation
    		0 / 40 (24) / 80 (48) / 120 (72) / 160 (96) / 200 (120) km/h (mph)
    		-

    OK:
    Needle indication is within the allowable range.



NG
REPLACE COMBINATION METER ASSEMBLY
OK


2.READ VALUE OF INTELLIGENT TESTER

  1. Operate the intelligent tester according to the steps on the display and select "DATA LIST".

    METER 
    Item
    		Measurement Item/Range (Display)
    		Normal Condition
    		Diagnostic Note
    Vehicle Speed Meter
    		Vehicle speed / Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph)
    		Almost same as actual speed (When driving)
    		-

    OK:
    Vehicle speed displayed on the tester is almost the same as the actual vehicle speed.



NG
Go to step 3
OK

REPLACE COMBINATION METER ASSEMBLY 

3.READ VALUE OF INTELLIGENT TESTER

  1. Operate the intelligent tester according to the steps on the display and select "DATA LIST".

    ABS 
    Item
    		Measurement Item/Range (Display)
    		Normal Condition
    		Diagnostic Note
    FR/FL/RR/RL Wheel Speed
    		Vehicle speed / Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    		Almost same as actual speed (When driving)
    		-

    OK:
    Vehicle speed displayed on the tester is almost the same as the actual vehicle speed.



NG
GO TO BRAKE CONTROL SYSTEM
OK


4.INSPECT COMBINATION METER ASSEMBLY


    E110199E02

  1. Disconnect the S40 connector.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    S40-22 (SP1) - Body ground
    		Turn the ignition switch to the ON position.
    		10 to 14 V



NG
Go to step 6
OK


5.INSPECT COMBINATION METER ASSEMBLY


    E112071E02

  1. Check the input signal waveform.

    1. Remove the combination meter assembly with connector(s) still connected.

    2. Connect the oscilloscope to the terminals C9-18 (SPEED SIGNAL) and body ground.

    3. Start the engine.

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

      HINT:
      As the vehicle speed increases, the cycle of the signal waveform narrows.



NG
REPLACE ABS & TRACTION ACTUATOR ASSEMBLY
OK

REPLACE COMBINATION METER ASSEMBLY 

6.CHECK HARNESS AND CONNECTOR (COMBINATION METER AND ABS & TRACTION ACTUATOR ASSEMBLY)


    E110197E02

  1. Disconnect the C9 and S40 connectors.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    C9-18 (SPEED SIGNAL)
    S40-22 (SP1)
    		Always
    		Below 1 Ω
    C9-18 (SPEED SIGNAL)
    - Body ground
    		Always
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE COMBINATION METER ASSEMBLY