Airbag System (For Hatchback With Vsc/Separate Type Yaw Rate Sensor) Srs Warning Light Does Not Come On

Vehicle Interior. Yaris. Ncp93, 131
Supplemental Restraint Systems. Yaris. Ncp93, 131

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT BATTERY

CHECK CONNECTION OF CONNECTORS

CHECK HARNESS AND CONNECTOR (SOURCE VOLTAGE OF COMBINATION METER ASSEMBLY)

CHECK SRS WARNING LIGHT

AIRBAG SYSTEM (for Hatchback with VSC/Separate Type Yaw Rate Sensor) - SRS Warning Light does not Come ON


DESCRIPTION

(YARIS_NCP93 RM000000YE20EAX_01.html)

WIRING DIAGRAM

(YARIS_NCP93 RM000000YE20EAX_02.html)

INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.INSPECT BATTERY

  1. Measure the voltage of the battery.

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    Battery
    		Always
    		11 to 14 V


NG
CHECK AND REPLACE BATTERY OR CHARGING SYSTEM (YARIS_NCP93 RM000001GNJ010X.html)
OK


2.CHECK CONNECTION OF CONNECTORS

  1. Turn the ignition switch off.

  1. Disconnect the cable from the negative (-) battery terminal.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

  1. Check that the connectors are properly connected to the airbag sensor assembly and the combination meter assembly.

    OK:
    The connectors are properly connected.


NG
CONNECT CONNECTORS PROPERLY
OK


3.CHECK HARNESS AND CONNECTOR (SOURCE VOLTAGE OF COMBINATION METER ASSEMBLY)


    Yaris. Ncp93, 131.Supplemental Restraint Systems.Airbag System (For Sedan).Airbag System (For Hatchback With Vsc/Separate Type Yaw Rate Sensor) Srs Warning Light Does Not Come On

  1. Turn the ignition switch off.

  1. Disconnect the cable from the negative (-) battery terminal.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

  1. Disconnect the connectors from the combination meter assembly and airbag sensor assembly.

  1. Connect the cable to the negative battery terminal, and wait for at least 2 seconds.

  1. Turn the ignition switch to ON.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    D100-39 (IG+) - D100-21 (ET)
    		Ignition switch ON
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Combination Meter Assembly)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK SRS WARNING LIGHT

  1. Turn the ignition switch off.

  1. Disconnect the cable from the negative (-) battery terminal.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

  1. Connect the connector to the combination meter assembly.

  1. Connect the cable to the negative battery terminal, and wait for at least 2 seconds.

  1. Turn the ignition switch to ON.

  1. Check the SRS warning light condition.

    OK:
    The SRS warning light goes off after the primary check period and comes on again after approximately 10 seconds.
    HINT:
    The primary check period lasts for approximately 6 seconds after the ignition switch is turned to ON.


NG
REPLACE COMBINATION METER ASSEMBLY (YARIS_NCP93 RM0000035EJ00BX.html)
OK

REPLACE AIRBAG SENSOR ASSEMBLY (YARIS_NCP93 RM000000V6U02AX.html)