AIRBAG SYSTEM > Trouble in Passenger Airbag ON/OFF Indicator

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DESCRIPTION

When the airbag cut-off switch is turned off, the passenger airbag OFF indicator illuminates. When the passenger airbag OFF indicator illuminates, both the front passenger airbag assembly and SRS seat cushion airbag assembly stop functioning.

HINT:
Approximately 6 seconds after the ignition switch is turned to ON, the passenger airbag ON/OFF indicator will be ON/OFF depending on the conditions listed below.


Airbag Cut-off Switch
Passenger Airbag ON/OFF Indicator
SRS Warning Light
ON Indicator
OFF Indicator
ON
ON
OFF
OFF
OFF
OFF
ON
OFF
Switch failure
OFF
ON
ON

WIRING DIAGRAM


C145458E08


INSPECTION PROCEDURE

1.CHECK SRS WARNING LIGHT

  1. Turn the ignition switch to ON, and check the SRS warning light condition.

    OK:
    The SRS warning light does not come on.



NG
GO TO DTC CHART (Click here)
OK


2.CHECK CONNECTION OF CONNECTORS

  1. Turn the ignition switch off.

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

  1. Check that the connectors are properly connected to the center airbag sensor assembly and the airbag cut-off switch.

    OK:
    The connectors are properly connected.



NG
CONNECT CONNECTORS PROPERLY
OK


3.CHECK CONNECTORS

  1. Disconnect the connectors from the center airbag sensor assembly and airbag cut-off switch.

  1. Check that the connectors (on the center airbag sensor assembly side and airbag cut-off switch side) are not damaged.

    OK:
    The connectors are not deformed or damaged.



NG
REPLACE INSTRUMENT PANEL WIRE
OK


4.CHECK AIRBAG CUT-OFF SWITCH


    H100191E02

  1. Disconnect the connector from the airbag cut-off switch.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    D48-1 (PMC-) - D48-2 (PMC+)
    		OFF
    		80 to 120 Ω
    D48-1 (PMC-) - D48-2 (PMC+)
    		ON
    		320 to 480 Ω

    Text in Illustration 
    *1
    		Component without harness connected
    (Airbag Cut-off Switch)



NG
REPLACE AIRBAG CUT-OFF SWITCH (Click here)
OK


5.CHECK INSTRUMENT PANEL WIRE (CENTER AIRBAG SENSOR - AIRBAG CUT-OFF SWITCH)

C196952E01


Text in Illustration 
*1
Rear view of wire harness connector
(to Airbag Cut-off Switch)
*5
Instrument Panel Wire
*2
Rear view of wire harness connector
(to Center Airbag Sensor Assembly)
*6
Connector C
*3
Airbag Cut-off Switch
*7
Connector B
*4
Center Airbag Sensor Assembly
*8
Service Wire

  1. Disconnect the instrument panel wire connector from the airbag cut-off switch.

  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
    D43-11 (MSW+) - Body ground
    		Ignition switch ON
    		Below 1 V
    D43-12 (MSW-) - Body ground
    		Ignition switch ON
    		Below 1 V

  1. Turn the ignition switch off.

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

  1. Using a service wire, connect terminals 2 (PMC+) and 1 (PMC-) of connector C.

    NOTICE:
    Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    D43-11 (MSW+) - D43-12 (MSW-)
    		Always
    		Below 1 Ω

  1. Disconnect the service wire from connector C.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    D43-11 (MSW+) - D43-12 (MSW-)
    		Always
    		1 MΩ or higher
    D43-11 (MSW+) - Body ground
    		Always
    		1 MΩ or higher
    D43-12 (MSW-) - Body ground
    		Always
    		1 MΩ or higher



NG
REPLACE INSTRUMENT PANEL WIRE
OK

REPLACE CENTER AIRBAG SENSOR ASSEMBLY (Click here)