METER / GAUGE SYSTEM > Malfunction in Speedometer

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WIRING DIAGRAM


E110255E02


INSPECTION PROCEDURE

1.INSPECT FUSE (ECU-IG & GAUGE)

  1. Remove the ECU-IG & GAUGE fuse from the instrument panel junction block (driver side junction block).

  1. Measure the resistance of the fuse.

    Standard resistance:
    Below 1 Ω



NG
REPLACE FUSE
OK


2.INSPECT VEHICLE SPEED SENSOR
E076238E01

  1. Measure the voltage of the sensor.

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    2 - 3
    1. Ignition switch ON
    1. Shift lever on N
    1. Slowly rotate rear wheel
    		10 to 14 V
    (Pulse generation)

    HINT:
    Connect the tester's positive (+) lead to terminal 3, and negative (-) lead to terminal 2.



NG
REPLACE VEHICLE SPEED SENSOR
OK


3.CHECK COMBINATION METER ASSEMBLY
E076236E01

  1. Disconnect the C8 meter connector.

  1. Using an oscilloscope, check the signal waveform of the meter.
    Tester Connection
    		Tool Setting
    		Vehicle Condition
    C8-5 - Body ground
    		5 V/DIV., 20 msec./DIV.
    		Drive vehicle at 20 km/h (12 mph)

    OK:
    Refer to the illustration

    HINT:
    As the vehicle speed increases, the wavelength shortens.



NG
Go to step 4
OK

REPLACE COMBINATION METER ASSEMBLY 

4.CHECK WIRE HARNESS (VEHICLE SPEED SENSOR - BATTERY AND BODY GROUND)
E110571E01

  1. Disconnect the S3 sensor connector.

  1. Measure the voltage of the wire harness side connector.

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    S3-1 - Body ground
    		Ignition switch ON
    		10 to 14 V
    S3-1 - Body ground
    		Ignition switch OFF
    		Below 1 V

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

    Standard resistance:
    Tester Connection
    		Specified Condition
    S3-2 - Body ground
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


5.CHECK WIRE HARNESS (VEHICLE SPEED SENSOR - COMBINATION METER ASSEMBLY)
E075936E01

  1. Disconnect the S3 sensor connector.

  1. Disconnect the C8 meter connector.

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

    Standard resistance:
    Tester Connection
    		Specified Condition
    S3-3 - C8-5
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

REPLACE COMBINATION METER ASSEMBLY