Vehicle Stability Control System (For Hatchback With Built-In Type Yaw Rate Sensor) Abs Warning Light Does Not Come On

Brake. Yaris. Ncp93, 131
Brake Control Dynamic Control Systems. Yaris. Ncp93, 131

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK CAN COMMUNICATION SYSTEM

CHECK ABS WARNING LIGHT

READ VALUE USING TECHSTREAM (ABS WARNING LIGHT)

VEHICLE STABILITY CONTROL SYSTEM (for Hatchback with Built-in Type Yaw Rate Sensor) - ABS Warning Light does not Come ON


DESCRIPTION

The skid control ECU (brake actuator assembly) is connected to the combination meter via CAN communication.

WIRING DIAGRAM

Refer to ABS Warning Light Remains ON (YARIS_NCP93 RM000000XIH0CBX_02.html).

INSPECTION PROCEDURE

NOTICE:
  1. When replacing the skid control ECU, perform zero point calibration (YARIS_NCP93 RM000000XHR078X.html).
  2. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.CHECK CAN COMMUNICATION SYSTEM

  1. Check if CAN communication system DTCs are output (YARIS_NCP93 RM000001RSW02PX.html).

Result
Result
Proceed to
DTC is not output
A
DTC is output
B


B
CHECK CAN COMMUNICATION SYSTEM (YARIS_NCP93 RM000001RSO066X.html)
A


2.CHECK ABS WARNING LIGHT

  1. Disconnect the skid control ECU connector.

  1. Turn the ignition switch to ON.

  1. Check that the ABS warning light comes on.

Result
Result
Proceed to
NG
A
OK
B

  1. Reconnect the skid control ECU connector.



B
REPLACE BRAKE ACTUATOR ASSEMBLY (YARIS_NCP93 RM000001BXP02KX.html)
A


3.READ VALUE USING TECHSTREAM (ABS WARNING LIGHT)

  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. According to the display on the Techstream, read the Data List.

    ABS/VSC/TRAC
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    ABS Warning Light
    		ABS warning light/OFF or ON
    		OFF: Warning light OFF
    ON: Warning light ON
    		-

  1. When performing the ABS Warning Light Active Test, check ABS Warning Light in the Data List.


ABS/VSC/TRAC
Tester Display
Test Part
Control Range
Diagnostic Note
ABS Warning Light
ABS warning light
Warning light OFF/ON
Observe combination meter
[Vehicle condition]
Vehicle stopped

Result
Result
Proceed to
Data List Display
Data List Display when Performing Active Test ON/OFF Operation
ON
Changes between ON and OFF
A
Does not change between ON and OFF
B
OFF
Changes between ON and OFF
A
Does not change between ON and OFF
B


B
REPLACE BRAKE ACTUATOR ASSEMBLY (YARIS_NCP93 RM000001BXP02KX.html)
A

REPLACE COMBINATION METER ASSEMBLY (YARIS_NCP93 RM0000035EJ00BX.html)