DTC    B1625/22    Side Airbag Sensor Assembly LH Circuit Malfunction

for Preparation Click here


DESCRIPTION

The side airbag sensor assembly LH consists of the safing sensor, the diagnostic circuit, the lateral deceleration sensor, etc.
If the center airbag sensor assembly receives signals from the lateral deceleration sensor, it determines whether or not the SRS should be activated.
DTC B1625/22 is recorded when a malfunction is detected in the side airbag sensor assembly LH circuit.

DTC No.
DTC Detecting Condition
Trouble Area
B1625/22
  1. The center airbag sensor assembly receives a line short circuit signal, an open circuit signal, a short circuit to ground signal or a short circuit to B+ signal in the side airbag sensor assembly LH circuit for 2 seconds.
  2. Side airbag sensor assembly LH malfunction
  3. Center airbag sensor assembly malfunction
  1. Floor wire No.2
  2. Side airbag sensor assembly LH
  3. Center airbag sensor assembly

WIRING DIAGRAM


H041710E11


INSPECTION PROCEDURE

1.CHECK DTC


    H043618E01

  1. Turn the engine switch on (IG), and wait for at least 60 seconds.

  1. Clear the DTCs stored in memory (Click here).

  1. Turn the engine switch off.

  1. Turn the engine switch on (IG), and wait for at least 60 seconds.

  1. Check the DTCs (Click here).

    OK:
    DTC B1625/22 is not output.

    HINT:
    Codes other than DTC B1625/22 may be output at this time, but they are not related to this check.



OK
USE SIMULATION METHOD TO CHECK
NG


2.CHECK CONNECTION OF CONNECTORS

  1. Turn the engine 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 side airbag sensor assembly LH.

    OK:
    The connectors are connected.



NG
CONNECT CONNECTORS, THEN GO TO STEP 1
OK


3.CHECK FLOOR WIRE NO.2 (OPEN)


    C109480E02

  1. Disconnect the connectors from the center airbag sensor assembly and the side airbag sensor assembly LH.

  1. Using a service wire, connect W16-22 (VUPL) and W16-20 (ESL) of connector "B".

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

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

    Resistance:
    Tester connection
    		Condition
    		Specified condition
    W8-2 (VUPL) -
    W8-1 (ESL)
    		Always
    		Below 1 Ω



NG
REPAIR OR REPLACE FLOOR WIRE NO.2
OK


4.CHECK FLOOR WIRE NO.2 (SHORT)


    C109481E02

  1. Disconnect the service wire from connector "B".

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

    Resistance:
    Tester connection
    		Condition
    		Specified condition
    W8-2 (VUPL) -
    W8-1 (ESL)
    		Always
    		1 MΩ or higher



NG
REPAIR OR REPLACE FLOOR WIRE NO.2
OK


5.CHECK FLOOR WIRE NO.2 (SHORT TO B+)


    C109481E02

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

  1. Turn the engine switch on (IG).

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

    Voltage:
    Tester connection
    		Condition
    		Specified condition
    W8-2 (VUPL) -
    Body ground
    		Engine switch on (IG)
    		Below 1 V
    W8-1 (ESL) -
    Body ground
    		Engine switch on (IG)
    		Below 1 V



NG
REPAIR OR REPLACE FLOOR WIRE NO.2
OK


6.CHECK FLOOR WIRE NO.2 (SHORT TO GROUND)


    C109481E02

  1. Turn the engine switch off.

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

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

    Resistance:
    Tester connection
    		Condition
    		Specified condition
    W8-2 (VUPL) -
    Body ground
    		Always
    		1 MΩ or higher
    W8-1 (ESL) -
    Body ground
    		Always
    		1 MΩ or higher



NG
REPAIR OR REPLACE FLOOR WIRE NO.2
OK


7.CHECK SIDE AIRBAG SENSOR ASSEMBLY LH


    H043635E01

  1. Connect the connectors to the center airbag sensor assembly.

  1. Interchange the side airbag sensor assembly LH with RH and connect the connectors to them.

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

  1. Turn the engine switch on (IG), and wait for at least 60 seconds.

  1. Clear the DTCs stored in memory (Click here).

  1. Turn the engine switch off.

  1. Turn the engine switch on (IG), and wait for at least 60 seconds.

  1. Check the DTCs (Click here).

    Result:
    Result
    		Proceed to
    DTC B1622/22 is output.
    		A
    DTC B1620/21 is output.
    		B
    DTC B1620/21 and B1625/22 are not output.
    		C

    HINT:
    Codes other than DTC B1620/21 and B1621/22 may be output at this time, but they are not related to this check.



A
REPLACE CENTER AIRBAG SENSOR ASSEMBLY

B
REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH
C

USE SIMULATION METHOD TO CHECK