Meter - Gauge System (For Hatchback) - Speedometer Malfunction

Brand:

Toyota

Model Name:

Yaris NCP90 91 92 93

Manual:

Repair Manual

Section:

Meter

Title:

Meter - Gauge System (For Hatchback)

  1. Description

  2. Wiring diagram

  3. Inspection procedure

  4. Perform active test using intelligent tester (speed meter)

  5. Check brake control system

  6. Read value using intelligent tester (vehicle speed meter)

  7. Inspect speed sensor

  8. Inspect fuses (met, ecu-ig fuses)

  9. Check harness and connector (speed sensor - combination meter assembly)

METER / GAUGE SYSTEM (for Hatchback) > Speedometer Malfunction


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DESCRIPTION

  1. w/o ABS:
    The combination meter assembly controls the speedometer in accordance with vehicle speed signals from the speed sensor.
  1. w/ ABS:
    The combination meter assembly controls the speedometer in accordance with vehicle speed signals from the ABS and traction actuator or the brake actuator through the CAN communication system.

WIRING DIAGRAM


Connect an intelligent tester to the DLC3. Yaris


INSPECTION PROCEDURE

HINT:
If DTC U0129 has been stored, troubleshoot the CAN communication system first.
1.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (SPEED METER)

  1. Connect an intelligent tester to the DLC3.

  1. Turn the ignition switch ON and turn the tester on.

  1. Operate the intelligent tester according to the display and select Active Test (Click here).

    Body / Combination Meter / Active Test:

    Item
    		Test Details
    		Diagnostic Note
    Speed Meter Operation
    		0 / 40 (25) / 80 (50) / 120 (75) / 160 (99) km/h (mph)
    		Value selected during Active Test is displayed
    OK:
    Vehicle speed displayed on the tester is approximately the same as that of the speedometer reading.


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REPLACE COMBINATION METER ASSEMBLY (Click here)
OK
next down

2.CHECK BRAKE CONTROL SYSTEM

  1. Check the brake control system.

    Result:
    Brake control system
    		Proceed to
    Vehicle with ABS
    		A
    Vehicle without ABS
    		B


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Go to step 4
A
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3.READ VALUE USING INTELLIGENT TESTER (VEHICLE SPEED METER)

  1. Connect an intelligent tester to the DLC3.

  1. Turn the ignition switch ON and turn the tester on.

  1. Operate the intelligent tester according to the display and select Data List (Click here).

    Body / Combination Meter / Data List:

    Item
    		Measurement Item / Range (Display)
    		Normal Condition
    		Diagnostic Note
    Vehicle Speed Meter
    		Vehicle speed /
    Min.: 0 km/h (0mph),
    Max.: 255 km/h (158mph)
    		Approximately same as actual vehicle speed (When vehicle is driven)
    		-
    OK:
    Vehicle speed displayed on the tester is approximately the same as the actual vehicle speed.
    NOTICE:
    Determine whether the value displayed on the tester is within the acceptable range by referring to reference values described in "ON-VEHICLE INSPECTION" (Click here).


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GO TO BRAKE CONTROL SYSTEM (Click here)
OK
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REPLACE COMBINATION METER ASSEMBLY (Click here)

4.INSPECT SPEED SENSOR
  1. Remove the speed sensor. Yaris

  2. Remove the speed sensor.

  1. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2.

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

    Standard voltage:
    Tester connection
    		condition
    		Specified condition
    2 - 3
    		Rotate the shaft
    		Voltage generated intermittently
    HINT:
    The output voltage should fluctuate up and down as shown in the illustration when the shaft is rotating slowly.
    OK:
    As shown in the illustration.

  1. Reinstall the speed sensor.



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REPLACE SPEED SENSOR (Click here)
OK
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5.INSPECT FUSES (MET, ECU-IG FUSES)
  1. Remove the MET and ECU-IG fuse from the main body ECU. Yaris

  2. Remove the MET and ECU-IG fuse from the main body ECU.

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

    Standard resistance:
    Tester connection
    		Condition
    		Specified condition
    MET fuse
    		Always
    		Below 1 Ω
    ECU-IG fuse
    		Always
    		Below 1 Ω

  1. Reinstall the fuses.



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REPLACE FUSES
OK
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6.CHECK HARNESS AND CONNECTOR (SPEED SENSOR - COMBINATION METER ASSEMBLY)
  1. Disconnect the D1 combination meter assembly connector. Yaris

  2. Disconnect the D1 combination meter assembly connector.

  1. Disconnect the C23 speed sensor connector.

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

    Standard resistance:
    Tester connection
    		Condition
    		Specified condition
    D1-17 (SI) - C23-3 (SI)
    		Always
    		Below 1 Ω
    C23-2 (SE) - Body ground
    		Always
    		Below 1 Ω

  1. Reconnect the combination meter assembly connector.

  1. Measure the voltage according to the value in the table below.

    Standard voltage:
    Tester connection
    		Switch condition
    		Specified condition
    C23-1 (IG+) - Body ground
    		Ignition switch ON
    		11 to 14 V

  1. Reconnect the speed sensor connector.



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REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
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REPLACE COMBINATION METER ASSEMBLY (Click here)