Dtc B1660/43 Passenger Airbag On/Off Indicator 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 PASSENGER AIRBAG ON / OFF INDICATOR OPERATION

CHECK CONNECTION OF CONNECTOR

CHECK FRONT PASSENGER AIRBAG ON/OFF INDICATOR LIGHT

CHECK INSTRUMENT PANEL WIRE (FOR OPEN)

CHECK INSTRUMENT PANEL WIRE (FOR SHORT)

CHECK INSTRUMENT PANEL WIRE (TO B+)

CHECK INSTRUMENT PANEL WIRE (TO GROUND)

CHECK CONNECTION OF CONNECTOR

CHECK INSTRUMENT PANEL WIRE (FOR OPEN)

CHECK INSTRUMENT PANEL WIRE (FOR SHORT)

CHECK INSTRUMENT PANEL WIRE (TO B+)

CHECK INSTRUMENT PANEL WIRE (TO GROUND)

CHECK INSTRUMENT PANEL WIRE (POWER SOURCE)

CHECK FRONT PASSENGER AIRBAG ON/OFF INDICATOR LIGHT

CHECK CENTER AIRBAG SENSOR ASSEMBLY

DTC B1660/43 Passenger Airbag ON/OFF Indicator Circuit Malfunction


DESCRIPTION

The passenger airbag ON / OFF indicator circuit consists of the center airbag sensor and the heater control panel*1 or clock*2.
This circuit indicates the operation condition of the front passenger airbag, the front passenger side airbag and passenger side seat belt pretensioner.
DTC B1660/43 is set when a malfunction is detected in the passenger airbag ON / OFF indicator circuit.

DTC No.
DTC Detection Condition
Trouble Area
B1660/43
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 passenger airbag ON / OFF indicator circuit for 2 seconds
  2. Front passenger seat belt warning light malfunction
  3. Center airbag sensor malfunction
  1. Instrument panel wire
  2. Front passenger airbag ON / OFF indicator light
  3. Center airbag sensor
HINT:
*1: for Automatic Air Conditioning System
*2: for Manual Air Conditioning System

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1660/43 Passenger Airbag On/Off Indicator Circuit Malfunction


INSPECTION PROCEDURE

1.CHECK PASSENGER AIRBAG ON / OFF INDICATOR OPERATION

  1. Turn the ignition switch on (IG).



  1. Check the passenger airbag ON / OFF indicator operation.


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1660/43 Passenger Airbag On/Off Indicator Circuit Malfunction


    Result
    ON / OFF Indicator Illumination
    		Proceed to
    Always ON
    		A
    OFF
    		B


B
Go to step 8
A


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 front passenger seat belt warning light.

    OK:
    The connectors are properly connected.


NG
CONNECT CONNECTOR
OK


3.CHECK FRONT PASSENGER AIRBAG ON/OFF INDICATOR LIGHT
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  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 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. Check the passenger airbag ON / OFF indicator operation.

    OK:
    Neither ON nor OFF passenger airbag ON / OFF indicator comes on.


OK
Go to step 14
NG


4.CHECK INSTRUMENT PANEL WIRE (FOR OPEN)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1660/43 Passenger Airbag On/Off Indicator 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. Disconnect the connector from the front passenger airbag ON / OFF indicator light.

  1. Using a service wire, connect E49-23 (PAON) and E49-17 (P-AB) of connector B.

    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 Automatic Air Conditioning System:
    Tester Connection
    		Specified Condition
    E26-6 (PAON) - E23-13 (P-AB)
    		Below 1 Ω
    for Manual Air Conditioning System:
    Tester Connection
    		Specified Condition
    E25-4 (PAON) - E25-9 (P-AB)
    		Below 1 Ω


NG
REPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK


5.CHECK INSTRUMENT PANEL WIRE (FOR SHORT)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1660/43 Passenger Airbag On/Off Indicator Circuit Malfunction

  1. Disconnect the service wire from connector B.

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

    Standard resistance:
    Tester Connection
    		Specified Condition
    E49-17 (P-AB) - E49-23 (PAON)
    		1 MΩ or higher


NG
REPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK


6.CHECK INSTRUMENT PANEL WIRE (TO B+)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1660/43 Passenger Airbag On/Off Indicator 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:
    Tester Connection
    		Specified Condition
    E49-23 (PAON) - Body ground
    		Below 1 V
    E49-17 (P-AB) - Body ground
    		Below 1 V


NG
REPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK


7.CHECK INSTRUMENT PANEL WIRE (TO GROUND)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1660/43 Passenger Airbag On/Off Indicator 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 resistance of the wire harness side connector.

    Standard resistance:
    Tester Connection
    		Specified Condition
    E49-17 (P-AB) - Body ground
    		1 MΩ or higher
    E49-23 (PAON) - Body ground
    		1 MΩ or higher


NG
REPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK

REPLACE FRONT PASSENGER AIRBAG ON/OFF INDICATOR LIGHT

8.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 heater control panel*1 or clock*2.

    OK:
    The connectors are properly connected.


NG
CONNECT CONNECTOR
OK


9.CHECK INSTRUMENT PANEL WIRE (FOR OPEN)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1660/43 Passenger Airbag On/Off Indicator Circuit Malfunction

  1. Disconnect the connector from the front passenger seat belt warning light.

  1. Using a service wire, connect E49-23 (PAON) and E49-17 (P-AB) of connector B.

    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 Automatic Air Conditioning System:
    Tester Connection
    		Specified Condition
    E26-6 (PAON) - E25-13(P-AB)
    		Below 1 Ω
    for Manual Air Conditioning System:
    Tester Connection
    		Specified Condition
    E25-4 (PAON) - E25-9(P-AB)
    		Below 1 Ω


NG
REPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK


10.CHECK INSTRUMENT PANEL WIRE (FOR SHORT)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1660/43 Passenger Airbag On/Off Indicator Circuit Malfunction

  1. Disconnect the service wire from connector B.

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

    Standard resistance:
    Tester Connection
    		Specified Condition
    E49-17 (P-AB) - E49-23 (PAON)
    		1 MΩ or higher


NG
REPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK


11.CHECK INSTRUMENT PANEL WIRE (TO B+)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1660/43 Passenger Airbag On/Off Indicator 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:
    Tester Connection
    		Specified Condition
    E49-23 (PAON) - Body ground
    		Below 1 V
    E49-17 (P-AB) - Body ground
    		Below 1 V


NG
REPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK


12.CHECK INSTRUMENT PANEL WIRE (TO GROUND)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1660/43 Passenger Airbag On/Off Indicator 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 resistance of the wire harness side connector.

    Standard resistance:
    Tester Connection
    		Specified Condition
    E49-17 (P-AB) - Body ground
    		1 MΩ or higher
    E49-23 (PAON) - Body ground
    		1 MΩ or higher


NG
REPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK


13.CHECK INSTRUMENT PANEL WIRE (POWER SOURCE)
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1660/43 Passenger Airbag On/Off Indicator 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:
    Tester Connection
    		Specified Condition
    E26-2 (IG+) - Body ground
    		10 to 14 V
    E25-2 (IG+) - Body ground
    		10 to 14 V


NG
REPAIR OR REPLACE POWER SOURCE CIRCUIT
OK


14.CHECK FRONT PASSENGER AIRBAG ON/OFF INDICATOR LIGHT
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1660/43 Passenger Airbag On/Off Indicator 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. Disconnect the connector from the front passenger seat belt warning light.

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

  1. Using a service wire, connect E26-6*1 E25-4*2 (PAON) and E26-7*1 E25-5*2 (GND) of the heater control panel*1 or clock*2.

    HINT:
    *1: for Automatic Air Conditioning System
    *2: for Manual Air Conditioning System

  1. Using a service wire, connect E26-13*1 E25-9*2 (P-AB) and E26-7*1 E25-5*2 (GND) of the heater control panel*1 or clock*2.

    HINT:
    *1: for Automatic Air Conditioning System
    *2: for Manual Air Conditioning System

  1. Turn the ignition switch on (IG).

  1. Check the passenger airbag ON / OFF indicator operation.

    OK:
    Front passenger airbag ON / OFF indicator comes on


NG
REPLACE FRONT PASSENGER AIRBAG ON/OFF INDICATOR LIGHT
OK


15.CHECK CENTER AIRBAG SENSOR ASSEMBLY
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System. Dtc B1660/43 Passenger Airbag On/Off Indicator 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. Connect the connector to the center airbag sensor.

  1. Connect the connector to the heater control panel*1 or clock*2.

    HINT:
    *1: for Automatic Air Conditioning System
    *2: for Manual Air Conditioning System

  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 B1660/43 is not output.
    HINT:
    DTCs other than DTC B1660/43 may be output at this time, but they are not related to this check.


NG
REPLACE CENTER AIRBAG SENSOR ASSEMBLY
OK

USE SIMULATION METHOD TO CHECK