Dtc B1825/56 Short In Front Passenger Side - Side Squib Circuit

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 FRONT PASSENGER SIDE FRONT SEAT SIDE AIRBAG ASSEMBLY (FRONT PASSENGER SIDE - SIDE SQUIB)

CHECK CONNECTOR

CHECK NO. 2 FLOOR WIRE (FRONT PASSENGER SIDE - SIDE SQUIB CIRCUIT)

CHECK NO. 2 SEAT AIRBAG WIRE

DTC B1825/56 Short in Front Passenger Side - Side Squib Circuit

DTC B1826/56 Open in Front Passenger Side - Side Squib Circuit

DTC B1827/56 Short to GND in Front Passenger Side - Side Squib Circuit

DTC B1828/56 Short to B+ in Front Passenger Side - Side Squib Circuit


DESCRIPTION

The front passenger side - side squib circuit consists of the center airbag sensor and the front seat side airbag RH.
The circuit instructs the SRS to deploy when the deployment conditions are met.
These DTCs are recorded when a malfunction is detected in the front passenger side - side squib circuit.

DTC No.
DTC Detection Condition
Trouble Area
B1825/56
The center airbag sensor receives a line short signal 5 times in the front passenger side - side squib circuit during primary check.
  1. No. 2 floor wire
  2. No. 2 seat airbag wire
  3. Front seat side airbag RH (Front passenger side - side squib) (for LHD)
  4. Front seat side airbag LH (Front passenger side - side squib) (for RHD)
  5. Center airbag sensor
B1826/56
Center airbag sensor receives an open signal in the front passenger side - side squib circuit for 2 seconds.
  1. No. 2 floor wire
  2. No. 2 seat airbag wire
  3. Front seat side airbag RH (Front passenger side - side squib) (for LHD)
  4. Front seat side airbag LH (Front passenger side - side squib) (for RHD)
  5. Center airbag sensor
B1827/56
Center airbag sensor receives a short to ground signal in the front passenger side - side squib circuit for 0.5 seconds.
  1. No. 2 floor wire
  2. No. 2 seat airbag wire
  3. Front seat side airbag RH (Front passenger side - side squib) (for LHD)
  4. Front seat side airbag LH (Front passenger side - side squib) (for RHD)
  5. Center airbag sensor
B1828/56
Center airbag sensor receives a short to B+ signal in the front passenger side - side squib circuit for 0.5 seconds.
  1. No. 2 floor wire
  2. No. 2 seat airbag wire
  3. Front seat side airbag RH (Front passenger side - side squib) (for LHD)
  4. Front seat side airbag LH (Front passenger side - side squib) (for RHD)
  5. Center airbag sensor

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1825/56 Short In Front Passenger Side - Side Squib Circuit


INSPECTION PROCEDURE

HINT:
  1. Perform the simulation method by selecting the "Check Mode" (signal check) with the intelligent tester (RAV4_ACA30 RM000000XFF05JX.html).
  2. After selecting the "Check Mode" (signal check), perform the simulation method by wiggling each connector of the airbag system or driving the vehicle on a city or rough road (RAV4_ACA30 RM000000XFF05JX.html).
1.CHECK FRONT PASSENGER SIDE FRONT SEAT SIDE AIRBAG ASSEMBLY (FRONT PASSENGER SIDE - SIDE SQUIB)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1825/56 Short In Front Passenger Side - Side Squib Circuit

  1. Turn the ignition switch off.

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

  1. Disconnect the connector from the front seat side airbag RH.

  1. Connect SST (resistance 2.1) to connector E.

    CAUTION:
    Never connect a tester to the front passenger side front seat side airbag (front passenger side - side squib) for measurement, as this may lead to a serious injury due to airbag deployment.
    NOTICE:
    1. Do not forcibly insert SST into the terminals of the connector when connecting.
    2. Insert SST straight into the terminals of the connector.
SST
09843-18061

  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 B1825, B1826, B1827, B1828 or 56 is not output.
    HINT:
    DTCs other than DTC B1825, B1826, B1827, B1828 or 56 may be output at this time, but they are not related to this check.


OK
REPLACE FRONT PASSENGER SIDE FRONT SEAT SIDE AIRBAG ASSEMBLY
NG


2.CHECK CONNECTOR

  1. Turn the ignition switch off.

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

  1. Disconnect SST from connector E.

  1. Check that the No. 2 seat airbag wire connectors (on the front passenger side - side squib) are not damaged.

    OK:
    Lock button is not disengaged, and claw of lock is not deformed or damaged.


NG
REPLACE FLOOR WIRE NO.2
OK


3.CHECK NO. 2 FLOOR WIRE (FRONT PASSENGER SIDE - SIDE SQUIB CIRCUIT)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1825/56 Short In Front Passenger Side - Side Squib Circuit

  1. Disconnect the connector from the center airbag sensor.

  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
    f1-1 (SFP+) - Body ground
    		Below 1 V
    f1-2 (SFP-) - Body ground
    		Below 1 V
    for RHD:
    Tester Connection
    		Specified Condition
    e1-1 (SFP+) - Body ground
    		Below 1 V
    e1-2 (SFP-) - Body ground
    		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. Measure the resistance of the wire harness side connector.

    Standard resistance:
    for LHD:
    Tester Connection
    		Specified Condition
    f1-1 (SFP+) - f1-2 (SFP-)
    		Below 1 Ω
    f1-1 (SFP+) - Body ground
    		1 MΩ or higher
    f1-2 (SFP-) - Body ground
    		1 MΩ or higher
    for RHD:
    Tester Connection
    		Specified Condition
    e1-1 (SFP+) - e1-2 (SFP-)
    		Below 1 Ω
    e1-1 (SFP+) - Body ground
    		1 MΩ or higher
    e1-2 (SFP-) - Body ground
    		1 MΩ or higher

  1. Release the activation prevention mechanism built into connector B (RAV4_ACA30 RM000000XFD06JX.html).

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

    Standard resistance:
    for LHD:
    Tester Connection
    		Specified Condition
    f1-1 (SFP+) - f1-2 (SFP-)
    		1 MΩ or higher
    for RHD:
    Tester Connection
    		Specified Condition
    e1-1 (SFP+) - e1-2 (SFP-)
    		1 MΩ or higher


OK
REPLACE CENTER AIRBAG SENSOR ASSEMBLY
NG


4.CHECK NO. 2 SEAT AIRBAG WIRE


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1825/56 Short In Front Passenger Side - Side Squib Circuit

  1. Disconnect the No. 2 seat airbag wire connector from the No. 2 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
    f1-1 (SFP+) - Body ground
    		Below 1 V
    f1-2 (SFP-) - Body ground
    		Below 1 V
    for RHD:
    Tester Connection
    		Specified Condition
    e1-1 (SFP+) - Body ground
    		Below 1 V
    e1-2 (SFP-) - Body ground
    		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. Measure the resistance of the wire harness side connector.

    Standard resistance:
    for LHD:
    Tester Connection
    		Specified Condition
    f1-1 (SFP+) - Lf1-1
    		Below 1 Ω
    f1-2 (SFP-) - Lf1-2
    		Below 1 Ω
    f1-1 (SFP+) - f1-2 (SFP-)
    		1 MΩ or higher
    f1-1 (SFP+) - Body ground
    		1 MΩ or higher
    f1-2 (SFP-) - Body ground
    		1 MΩ or higher
    for RHD:
    Tester Connection
    		Specified Condition
    e1-1 (SFP+) - Ke1-1
    		Below 1 Ω
    e1-2 (SFP-) - Ke1-2
    		Below 1 Ω
    e1-1 (SFP+) - e1-2 (SFP-)
    		1 MΩ or higher
    e1-1 (SFP+) - Body ground
    		1 MΩ or higher
    e1-2 (SFP-) - Body ground
    		1 MΩ or higher


NG
REPAIR OR REPLACE NO. 2 SEAT AIRBAG WIRE
OK

REPAIR OR REPLACE NO. 2 FLOOR WIRE