GSIC - Global Service Information Center

### METER / GAUGE SYSTEM > Malfunction in Speedometer

## for Preparation Click here

## WIRING DIAGRAM

## 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

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

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)

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)

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