Dtc B1653/35 Seat Position Airbag Sensor Circuit Malfunction

Restraints. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
Supplemental Restraint System. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTC

CHECK CONNECTION OF CONNECTOR

CHECK SEAT POSITION SENSOR CIRCUIT (FOR OPEN)

CHECK SEAT POSITION SENSOR CIRCUIT (FOR SHORT)

CHECK SEAT POSITION SENSOR CIRCUIT (TO B+)

CHECK SEAT POSITION SENSOR CIRCUIT (TO GROUND)

CHECK SEAT POSITION SENSOR

REPLACE SEAT POSITION SENSOR

CHECK CENTER AIRBAG SENSOR ASSEMBLY

CHECK FLOOR WIRE (FOR OPEN)

CHECK FLOOR WIRE (FOR SHORT)

CHECK FLOOR WIRE (TO B+)

CHECK FLOOR WIRE (TO GROUND)

DTC B1653/35 Seat Position Airbag Sensor Circuit Malfunction


DESCRIPTION

The seat position sensor circuit consists of the center airbag sensor and the seat position sensor.
DTC B1653/35 is recorded when a malfunction is detected in the seat position sensor circuit.

DTC No.
DTC Detection Condition
Trouble Area
B1653/35
When one of following conditions is met:
  1. Center airbag sensor detects line short signal, open signal, short to ground signal or short to B+ signal in seat position sensor circuit for 2 seconds.
  2. Seat position sensor malfunction
  3. Center airbag sensor malfunction
  1. Floor wire
  2. Front seat inner belt
  3. Seat position sensor
  4. Center airbag sensor

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1653/35 Seat Position Airbag Sensor Circuit Malfunction


INSPECTION PROCEDURE

1.CHECK FOR DTC
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1653/35 Seat Position Airbag Sensor Circuit Malfunction

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

  1. Clear the DTCs (RAV4_ACA30 RM000000XFE06SX.html).

  1. Turn the ignition switch off.

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

  1. Check the DTCs (RAV4_ACA30 RM000000XFE06SX.html).

    OK:
    DTC B1653/35 is not output.
    HINT:
    DTCs other than DTC B1653/35 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 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 center airbag sensor and the seat position sensor.

    OK:
    The connectors are properly connected.


NG
CONNECT CONNECTOR
OK


3.CHECK SEAT POSITION SENSOR CIRCUIT (FOR OPEN)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1653/35 Seat Position Airbag Sensor Circuit Malfunction

  1. Disconnect the connectors from the center airbag sensor and the seat position sensor.

  1. Using a service wire, connect K1-14 (DSP+) and K1-13 (DSP-)*1 or L18-14 (DSP+) and L18-13 (DSP-)*2 of connector B.

    HINT:
    *1: for LHD
    *2: for RHD
    NOTICE:
    Do not forcibly insert the service wire into the terminals of the connector when connecting.

  1. Measure the resistance of the wire harness side connector.

    Standard resistance:
    for LHD:
    Tester Connection
    		Specified Condition
    2 (LSP+) - 1 (LSP-)
    		Below 1 Ω
    for RHD:
    Tester Connection
    		Specified Condition
    2 (RSP+) - 1 (RSP-)
    		Below 1 Ω


NG
Go to step 10
OK


4.CHECK SEAT POSITION SENSOR CIRCUIT (FOR SHORT)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1653/35 Seat Position Airbag Sensor Circuit Malfunction

  1. Disconnect the service wire from connector B.

  1. Measure the resistance of the wire harness side connector.

    Standard resistance:
    for LHD:
    Tester Connection
    		Specified Condition
    2 (LSP+) - 1 (LSP-)
    		1 MΩ or higher
    for RHD:
    Tester Connection
    		Specified Condition
    2 (RSP+) - 1 (RSP-)
    		1 MΩ or higher


NG
Go to step 11
OK


5.CHECK SEAT POSITION SENSOR CIRCUIT (TO B+)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1653/35 Seat Position Airbag Sensor Circuit Malfunction

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

  1. Turn the ignition switch on (IG).

  1. Measure the voltage of the wire harness side connector.

    Standard voltage:
    for LHD:
    Tester Connection
    		Specified Condition
    2 (LSP+) - Body ground
    		Below 1 V
    1 (LSP-) - Body ground
    		Below 1 V
    for RHD:
    Tester Connection
    		Specified Condition
    2 (RSP+) - Body ground
    		Below 1 V
    1 (RSP-) - Body ground
    		Below 1 V


NG
Go to step 12
OK


6.CHECK SEAT POSITION SENSOR CIRCUIT (TO GROUND)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1653/35 Seat Position Airbag Sensor Circuit Malfunction

  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 voltage of the wire harness side connector.

    Standard resistance:
    for LHD:
    Tester Connection
    		Specified Condition
    2 (LSP+) - Body ground
    		1 MΩ or higher
    1 (LSP-) - Body ground
    		1 MΩ or higher
    for RHD:
    Tester Connection
    		Specified Condition
    2 (RSP+) - Body ground
    		1 MΩ or higher
    1 (RSP-) - Body ground
    		1 MΩ or higher


NG
Go to step 13
OK


7.CHECK SEAT POSITION SENSOR
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1653/35 Seat Position Airbag Sensor Circuit Malfunction

  1. Connect the connectors to the center airbag sensor and the seat position sensor.

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

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

  1. Clear the DTCs (RAV4_ACA30 RM000000XFE06SX.html).

  1. Turn the ignition switch off.

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

  1. Check the DTCs (RAV4_ACA30 RM000000XFE06SX.html).

    OK:
    DTC B1653/35 is not output.
    HINT:
    DTCs other than DTC B1653/35 may be output at this time, but they are not related to this check.


OK
USE SIMULATION METHOD TO CHECK
NG


8.REPLACE SEAT POSITION SENSOR

  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 seat position sensor (RAV4_ACA30 RM000001DOG00CX.html).

    HINT:
    Perform the inspection using parts from a normal vehicle if possible.

NEXT


9.CHECK CENTER AIRBAG SENSOR ASSEMBLY


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1653/35 Seat Position Airbag Sensor Circuit Malfunction

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

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

  1. Clear the DTCs (RAV4_ACA30 RM000000XFE06SX.html).

  1. Turn the ignition switch off.

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

  1. Check the DTCs (RAV4_ACA30 RM000000XFE06SX.html).

    OK:
    DTC B1653/35 is not output.
    HINT:
    DTCs other than DTC B1653/35 may be output at this time, but they are not related to this check.


NG
REPLACE CENTER AIRBAG SENSOR ASSEMBLY
OK

END

10.CHECK FLOOR WIRE (FOR OPEN)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1653/35 Seat Position Airbag Sensor Circuit Malfunction

  1. Disconnect the front seat inner belt connector from the floor wire.

  1. Using a service wire, connect K1-14 (DSP+) and K1-13 (DSP-)*1 or L18-14 (DSP+) and L18-13 (DSP-)*2 of connector B.

    HINT:
    *1: for LHD
    *2: for RHD
    NOTICE:
    Do not forcibly insert the service wire into the terminals of the connector when connecting.

  1. Measure the resistance of the wire harness side connector.

    Standard resistance:
    for LHD:
    Tester Connection
    		Specified Condition
    K3-2 (LSP+) - K3-1 (LSP-)
    		Below 1 Ω
    for RHD:
    Tester Connection
    		Specified Condition
    L16-2 (RSP+) - L16-1 (RSP-)
    		Below 1 Ω


NG
REPAIR OR REPLACE FLOOR WIRE
OK

REPLACE FRONT SEAT INNER BELT ASSEMBLY

11.CHECK FLOOR WIRE (FOR SHORT)


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1653/35 Seat Position Airbag Sensor Circuit Malfunction

  1. Disconnect the front seat inner belt connector from the floor wire.

  1. Measure the resistance of the wire harness side connector.

    Standard resistance:
    for LHD:
    Tester Connection
    		Specified Condition
    J10-2 (LSP+) - J10-1 (LSP-)
    		1 MΩ or higher
    for RHD:
    Tester Connection
    		Specified Condition
    L16-2 (RSP+) - L16-1 (RSP-)
    		1 MΩ or higher


NG
REPAIR OR REPLACE FLOOR WIRE
OK

REPLACE FRONT SEAT INNER BELT ASSEMBLY

12.CHECK FLOOR WIRE (TO B+)

  1. Turn the ignition switch off.

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



    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1653/35 Seat Position Airbag Sensor Circuit Malfunction

  1. Disconnect the front seat inner belt connector from the floor wire.

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

  1. Turn the ignition switch on (IG).

  1. Measure the voltage of the wire harness side connector.

    Standard voltage:
    for LHD:
    Tester Connection
    		Specified Condition
    K3-2 (LSP+) - Body ground
    		Below 1 V
    K3-1 (LSP-) - Body ground
    		Below 1 V
    for RHD:
    Tester Connection
    		Specified Condition
    L16-2 (RSP+) - Body ground
    		Below 1 V
    L16-1 (RSP-) - Body ground
    		Below 1 V


NG
REPAIR OR REPLACE FLOOR WIRE
OK

REPLACE FRONT SEAT INNER BELT ASSEMBLY

13.CHECK FLOOR WIRE (TO GROUND)


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1653/35 Seat Position Airbag Sensor Circuit Malfunction

  1. Disconnect the front seat inner belt connector from the floor wire.

  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 of the wire harness side connector.

    Standard resistance:
    for LHD:
    Tester Connection
    		Specified Condition
    K3-2 (LSP+) - Body ground
    		1 MΩ or higher
    K3-1 (LSP-) - Body ground
    		1 MΩ or higher
    for RHD:
    Tester Connection
    		Specified Condition
    L16-2 (RSP+) - Body ground
    		1 MΩ or higher
    L16-1 (RSP-) - Body ground
    		1 MΩ or higher


NG
REPAIR OR REPLACE FLOOR WIRE
OK

REPLACE FRONT SEAT INNER BELT ASSEMBLY