Lexus NX: Front Airbag Sensor (RH) (B1610)

DESCRIPTION

The front airbag sensor RH consists of a diagnostic circuit and frontal deceleration sensor, etc.

If the airbag ECU assembly receives signals from the frontal deceleration sensor, it determines whether the SRS should be activated.

DTC B1610 is stored when a malfunction is detected in the front airbag sensor RH circuit.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B1610

Front Airbag Sensor (RH)

Either condition is met:

  • A front airbag sensor RH malfunction.
  • An airbag ECU assembly malfunction.
  • Front airbag sensor RH
  • Airbag ECU assembly

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • After the power switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

    Click here

  • When disconnecting and reconnecting the auxiliary battery

    Click here

    HINT:

    When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

    Click here

  • After replacing the airbag ECU assembly, refer to initialization.

    Click here

PROCEDURE

1.

CHECK FRONT AIRBAG SENSOR RH

(a) Turn the power switch off.

*1

Front Airbag Sensor LH

*2

Airbag ECU Assembly

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

(c) Interchange the front airbag sensor RH with LH and connect the connectors to them.

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

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

(f) Clear the DTCs stored in memory.

Click here

Body Electrical > SRS Airbag > Clear DTCs

(g) Turn the power switch off.

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

(i) Check for DTCs.

Click here

Body Electrical > SRS Airbag > Trouble Codes

HINT:

Codes other than DTC B16103 and B1615 may be output at this time, but they are not related to this check.

(j) Turn the power switch off.

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

(l) Return the front airbag sensor LH and RH to their original positions and connect the connectors to them.

DTC B1610 is output

REPLACE AIRBAG ECU ASSEMBLY

DTC B1615 is output

REPLACE FRONT AIRBAG SENSOR RH

DTC B1610 and B1615 are not output

USE SIMULATION METHOD TO CHECK

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