Toyota Tundra Service Manual: Side Airbag Sensor RH (B1690,B1695)

DESCRIPTION

The side airbag sensor assembly LH or RH consists of a lateral deceleration sensor, etc.

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

DTC B1690 or B1695 is stored when a malfunction is detected in the side airbag sensor assembly LH or RH circuit.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

Test Mode / Check Mode

B1690

Side Airbag Sensor RH

Either condition is met:

  • A side airbag sensor assembly RH malfunction.
  • An airbag sensor assembly malfunction.
  • Side airbag sensor assembly RH
  • Airbag sensor assembly

Comes on

Not applicable

B1695

Side Airbag Sensor LH

Either condition is met:

  • A side airbag sensor assembly LH malfunction.
  • An airbag sensor assembly malfunction.
  • Side airbag sensor assembly LH
  • Airbag sensor assembly

Comes on

Not applicable

WIRING DIAGRAM

for RH Side: for LH Side:

CAUTION / NOTICE / HINT

NOTICE:

  • After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

    Click here

  • When disconnecting the cable from the negative (-) battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected.

    Click here

PROCEDURE

1.

CHECK DTC

(a) Turn the ignition switch to ON, and wait for at least 60 seconds.

(b) Clear the DTCs stored in memory.

Click here

(c) Turn the ignition switch off.

HINT:

If a communication error occurs, DTCs for both the LH and RH sides will be stored simultaneously. The malfunctioning area can be identified by turning the ignition switch off and then ON again.

(d) Turn the ignition switch to ON, and wait for at least 60 seconds.

(e) Check for DTCs.

Click here

Result

Proceed to

DTC B1690 is output

A

DTC B1695 is output

B

DTC B1690 and B1695 are not output

C

HINT:

Codes other than DTC B1690 and B1695 may be output at this time, but they are not related to this check.

B

GO TO STEP 3

C

USE SIMULATION METHOD TO CHECK

A

2.

CHECK SIDE AIRBAG SENSOR ASSEMBLY RH

(a) Turn the ignition switch off.

*1

Side Airbag Sensor Assembly LH

*2

No. 2 Side Airbag Sensor Assembly RH

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

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

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

(e) Turn the ignition switch to ON, and wait for at least 60 seconds.

(f) Clear the DTCs stored in memory.

Click here

(g) Turn the ignition switch off.

(h) Turn the ignition switch to ON, and wait for at least 60 seconds.

(i) Check for DTCs.

Click here

Result

Proceed to

DTC B1690 is output

A

DTC B1695 is output

B

DTC B1690 and B1695 are not output

C

HINT:

Codes other than DTC B1690 and B1695 may be output at this time, but they are not related to this check.

(j) Turn the ignition switch off.

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

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

A

REPLACE AIRBAG SENSOR ASSEMBLY

B

REPLACE SIDE AIRBAG SENSOR ASSEMBLY RH

C

USE SIMULATION METHOD TO CHECK

3.

CHECK SIDE AIRBAG SENSOR ASSEMBLY LH

(a) Turn the ignition switch off.

*1

Side Airbag Sensor Assembly RH

*2

No. 2 Side Airbag Sensor Assembly LH

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

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

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

(e) Turn the ignition switch to ON, and wait for at least 60 seconds.

(f) Clear the DTCs stored in memory.

Click here

(g) Turn the ignition switch off.

(h) Turn the ignition switch to ON, and wait for at least 60 seconds.

(i) Check for DTCs.

Click here

Result

Proceed to

DTC B1690 is output

A

DTC B1695 is output

B

DTC B1690 and B1695 are not output

C

HINT:

Codes other than DTC B1690 and B1695 may be output at this time, but they are not related to this check.

(j) Turn the ignition switch off.

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

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

A

REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH

B

REPLACE AIRBAG SENSOR ASSEMBLY

C

USE SIMULATION METHOD TO CHECK

    P Seat Airbag Active Mode Indicator (B1660)

    Lost Communication with Side Airbag Sensor RH (B1692,B1693,B1697,B1698)

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