Meter / Gauge System Speedometer Malfunction

Vehicle Interior. Corolla. Zre142 Aze141
Meter Gauge Display. Corolla. Zre142 Aze141

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK CAN COMMUNICATION SYSTEM

PERFORM ACTIVE TEST USING TECHSTREAM (SPEED METER OPERATION)

READ VALUE USING TECHSTREAM (VEHICLE SPEED METER)

READ VALUE USING TECHSTREAM (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 line (CAN No. 1 Bus). The vehicle speed sensor detects the voltage that varies according to the vehicle speed. 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.
HINT:
If the vehicle speed sensor circuit has a malfunction, the skid control ECU outputs the DTCs. Perform troubleshooting with the Brake Control System (COROLLA_ZRE142 RM000000XHU0A6X.html (w/o VSC), COROLLA_ZRE142 RM000000XHU0A5X.html (w/ VSC)).

WIRING DIAGRAM


Corolla. Zre142 Aze141.Meter Gauge Display.Meter / Gauge System.Meter / Gauge System Speedometer Malfunction


INSPECTION PROCEDURE

1.CHECK CAN COMMUNICATION SYSTEM

  1. Check if CAN communication DTC is output (COROLLA_ZRE142 RM000000WIB0BUX.html).

    Result:

    Result
    		Proceed to
    CAN communication DTC is not output.
    		A
    CAN communication DTC is output.
    		B


B
GO TO CAN COMMUNICATION SYSTEM (COROLLA_ZRE142 RM000000WI60ACX.html)
A


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

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Enter the following menus: Body Electrical / Combination Meter / Active Test.

  1. Check the operation by referring to the values in the table below.

    Combination Meter
    Tester Display
    		Test Part
    		Control Range
    		Diagnostic Note
    Speed Meter Operation
    		Speedometer
    		0, 40, 80, 120 mph*1
    		Confirm that the vehicle is stopped, engine idling
    0, 40, 80, 120, 160, 200, 240 km/h*2
    1. *1: for U.S.A.
    2. *2: except for U.S.A.
    OK:
    Speedometer indication is normal.


NG
REPLACE COMBINATION METER (COROLLA_ZRE142 RM0000024D7032X_01_0010.html)
OK


3.READ VALUE USING TECHSTREAM (VEHICLE SPEED METER)

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Enter the following menus: Body Electrical / Combination Meter / Data List.

  1. Check the values by referring to the values in the table below.

    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 same as actual speed (When driving)
    		-
    OK:
    Vehicle speed displayed on the Techstream 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 (COROLLA_ZRE142 RM0000024D7032X_01_0010.html)

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

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Enter the following menus: Chassis / ABS/VSC/TRAC / Data List.

  1. Check the values by referring to the table below.

    ABS/VSC/TRAC
    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 speed (When driving)
    		-
    FL Wheel Speed
    		Vehicle speed/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    		Almost same as actual speed (When driving)
    		-
    RR Wheel Speed
    		Vehicle speed/Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph)
    		Almost same as actual speed (When driving)
    		-
    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 Techstream is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).
    Result:
    Result
    		Proceed to
    OK
    		A
    NG (w/o VSC)
    		B
    NG (w/ VSC)
    		C


B
GO TO BRAKE CONTROL SYSTEM (w/o VSC) (COROLLA_ZRE142 RM000000XHK0FTX.html)

C
GO TO BRAKE CONTROL SYSTEM (w/ VSC) (COROLLA_ZRE142 RM000000XHK0FSX.html)
A


5.REPLACE SKID CONTROL ECU

  1. Replace the skid control ECU with a new or a known good one (COROLLA_ZRE142 RM0000013P6022X.html (w/o VSC), COROLLA_ZRE142 RM000003CZU00MX.html (w/ VSC)).

    OK:
    The operation of the speedometer returns to normal.


NG
REPLACE COMBINATION METER (COROLLA_ZRE142 RM0000024D7032X_01_0010.html)
OK

END