Airbag System Srs Warning Light Does Not Come On

Vehicle Interior. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
Supplemental Restraint Systems. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK BATTERY

CHECK CONNECTION OF CONNECTOR

CHECK COMBINATION METER ASSEMBLY

CHECK SRS WARNING LIGHT (OPERATION)

REPLACE CENTER AIRBAG SENSOR ASSEMBLY

AIRBAG SYSTEM - SRS Warning Light does not Come ON


DESCRIPTION

Refer to "SRS Warning Light Remains ON" (HILUX_TGN26 RM000000YXP01PX.html).

WIRING DIAGRAM

Refer to "SRS Warning Light Remains ON" (HILUX_TGN26 RM000000YXP01PX.html).

INSPECTION PROCEDURE

NOTICE:
  1. After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work (HILUX_TGN26 RM000004QR1006X.html).
  2. When disconnecting the cable, some systems need to be initialized after the cable is reconnected (HILUX_TGN26 RM000004QR3008X.html).
  3. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.CHECK BATTERY

  1. Measure the voltage of the battery.

    Standard voltage:
    11 to 14 V


NG
REPLACE OR RECHARGE BATTERY
OK


2.CHECK CONNECTION OF CONNECTOR

  1. Turn the ignition switch off.

  1. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

  1. Check that the connectors are properly connected to the combination meter.

    OK:
    The connectors are properly connected.


NG
CONNECT CONNECTOR PROPERLY
OK


3.CHECK COMBINATION METER ASSEMBLY


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Supplemental Restraint Systems.Airbag System.Airbag System Srs Warning Light Does Not Come On

  1. Disconnect the G19 connector from the combination meter.

  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
    G19-21 (IG+) - Body ground
    		Ignition switch ON
    		11 to 14 V

  1. Turn the ignition switch off.

  1. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G19-22 (EP) - Body ground
    		Always
    		Below 1 Ω
Text in Illustration
*a
Front view of wire harness connector
(to Combination Meter)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK SRS WARNING LIGHT (OPERATION)

  1. Connect the connector to the combination meter.

  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.

    NOTICE:
    Make sure that nobody is in the vehicle.
    OK:
    After the primary check period, the SRS warning light goes off for approximately 10 seconds and then remains on.
    HINT:
    The primary check period is approximately 6 seconds after the ignition switch is turned to ON.


NG
REPLACE COMBINATION METER ASSEMBLY (HILUX_TGN26 RM000000THS026X.html)
OK


5.REPLACE CENTER AIRBAG SENSOR ASSEMBLY

  1. Turn the ignition switch off.

  1. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

  1. Replace the center airbag sensor (HILUX_TGN26 RM0000010IE012X.html).

  1. Check the SRS warning light condition.

    OK:
    SRS warning light illuminates normally.


NG
REPLACE COMBINATION METER ASSEMBLY (HILUX_TGN26 RM000000THS026X.html)
OK

END (CENTER AIRBAG SENSOR IS DEFECTIVE)