SUPPLEMENTAL RESTRAINT SYSTEMS Dtc B1660/43 Passenger Airbag On/Off Indicator Circuit Malfunction

Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - SUPPLEMENTAL RESTRAINT SYSTEMS

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION

CHECK CONNECTION OF CONNECTORS

CHECK CONNECTORS

CHECK PASSENGER AIRBAG ON/OFF INDICATOR

CHECK CENTER AIRBAG SENSOR

CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT

CHECK INSTRUMENT PANEL WIRE (CENTER AIRBAG SENSOR - NO. 2 INSTRUMENT PANEL WIRE)

CHECK NO. 2 INSTRUMENT PANEL WIRE (INSTRUMENT PANEL WIRE - NO. 5 INSTRUMENT PANEL WIRE)

CHECK CONNECTION OF CONNECTORS

CHECK CONNECTORS

CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT

CHECK PASSENGER AIRBAG ON/OFF INDICATOR (SOURCE VOLTAGE)

CHECK PASSENGER AIRBAG ON/OFF INDICATOR

CHECK CENTER AIRBAG SENSOR

CHECK INSTRUMENT PANEL WIRE (CENTER AIRBAG SENSOR - NO. 2 INSTRUMENT PANEL WIRE)

CHECK NO. 2 INSTRUMENT PANEL WIRE (INSTRUMENT PANEL WIRE - NO. 5 INSTRUMENT PANEL WIRE)

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 passenger airbag ON/OFF indicator.

The passenger airbag ON/OFF indicator indicates the operation condition of the front passenger airbag, front passenger side knee airbag, front seat airbag RH and front seat outer belt RH.

DTC B1660/43 is stored when a malfunction is detected in the passenger airbag ON/OFF indicator circuit.

DTC CodeDTC Detection ConditionTrouble AreaB1660/43 When one of the following conditions is met:
The center airbag sensor receives an open circuit signal, a short circuit to ground signal or a short circuit to B+ signal in the passenger airbag ON/OFF indicator circuit for 2 seconds.
A passenger airbag ON/OFF indicator malfunction.
A center airbag sensor malfunction.
Instrument panel wire
Multi-display assembly*1
Clock*2
Center airbag sensor assembly
No. 2 instrument panel wire
No. 5 instrument panel wire*2
HINT:*1: w/ Navigation System*2: w/o Navigation System

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work ().
When disconnecting the cable, some systems need to be initialized after the cable is reconnected ().
1.CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION

Turn the ignition switch to ON.

Check the passenger airbag ON/OFF indicator operation.

HINT:Refer to the normal condition of the passenger airbag ON/OFF indicator ().ResultResultProceed to Always onAOffBBGo to step 9A2.CHECK CONNECTION OF CONNECTORS

Turn the ignition switch off.

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

Check that the connectors are properly connected to the center airbag sensor and the multi-display assembly or clock.

OK:The connectors are properly connected.NGCONNECT CONNECTORS PROPERLYOK3.CHECK CONNECTORS

Disconnect the connectors from the center airbag sensor and the multi-display assembly or clock.

Check that the connectors (on the center airbag sensor side and multi-display assembly side or clock side) are not damaged.

OK:The connectors are not deformed or damaged.NGREPLACE HARNESS AND CONNECTOROK4.CHECK PASSENGER AIRBAG ON/OFF INDICATOR

Connect the connector to the multi-display assembly or clock.

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

Turn the ignition switch to ON.

Check the passenger airbag ON/OFF indicator operation.

OK:The passenger airbag ON/OFF indicator does not come on.NGGo to step 6OK5.CHECK CENTER AIRBAG SENSOR

Connect the connector to the center airbag sensor.

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

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

Clear the DTCs ().

Turn the ignition switch off.

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

Check for DTCs ().

OK:DTC B1660 is not output.HINT:Codes other than DTC B1660 may be output at this time, but they are not related to this check.NGREPLACE CENTER AIRBAG SENSOR ASSEMBLY () OKUSE SIMULATION METHOD TO CHECK () 6.CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT

Turn the ignition switch off.

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

Disconnect the connector from the center airbag sensor and multi-display assembly or clock.

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

Measure the voltage according to the value(s) in the table below.

Standard Voltage:w/ Navigation SystemTester ConnectionSwitch ConditionSpecified ConditionF79-20 (ARON) - Body groundIgnition switch ONBelow 1 VF79-8 (AIR) - Body groundIgnition switch ONBelow 1 Vw/o Navigation SystemTester ConnectionSwitch ConditionSpecified Conditiong1-3 (PAON) - Body groundIgnition switch ONBelow 1 Vg1-2 (P-AB) - Body groundIgnition switch ONBelow 1 V

Turn the ignition switch off.

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

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

NOTICE:Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:w/ Navigation SystemTester ConnectionConditionSpecified ConditionF79-20 (ARON) - F79-8 (AIR)AlwaysBelow 1 Ωw/o Navigation SystemTester ConnectionConditionSpecified Conditiong1-3 (PAON) - g1-2 (P-AB)AlwaysBelow 1 Ω

Disconnect the service wire from connector B.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:w/ Navigation SystemTester ConnectionConditionSpecified ConditionF79-20 (ARON) - F79-8 (AIR)Always1 MΩ or higherF79-20 (ARON) - Body groundAlways1 MΩ or higherF79-8 (AIR) - Body groundAlways1 MΩ or higherw/o Navigation SystemTester ConnectionConditionSpecified Conditiong1-3 (PAON) - g1-2 (P-AB)Always1 MΩ or higherg1-3 (PAON) - Body groundAlways1 MΩ or higherg1-2 (P-AB) - Body groundAlways1 MΩ or higherResultResultProceed toOK (w/ Navigation System)AOK (w/o Navigation System)BNGCBREPLACE CLOCK () CGo to step 7AREPLACE MULTI-DISPLAY ASSEMBLY () 7.CHECK INSTRUMENT PANEL WIRE (CENTER AIRBAG SENSOR - NO. 2 INSTRUMENT PANEL WIRE)

Disconnect the instrument panel wire connector from the No. 2 instrument panel wire.

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

Measure the voltage according to the value(s) in the table below.

Standard Voltage:Tester ConnectionSwitch ConditionSpecified ConditionFE4-13 (PAON) - Body groundIgnition switch ONBelow 1 VFE4-12 (P-AB) - Body groundIgnition switch ONBelow 1 V

Turn the ignition switch off.

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

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

NOTICE:Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:Tester ConnectionConditionSpecified ConditionFE4-13 (PAON) - FE4-12 (P-AB)AlwaysBelow 1 Ω

Disconnect the service wire from connector B.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:Tester Connection ConditionSpecified ConditionFE4-13 (PAON) - FE4-12 (P-AB)Always1 MΩ or higherFE4-13 (PAON) - Body groundAlways1 MΩ or higherFE4-12 (P-AB) - Body groundAlways1 MΩ or higherResultResultProceed toOK (w/ Navigation System)AOK (w/o Navigation System)BNGCBGo to step 8CREPLACE INSTRUMENT PANEL WIREAREPLACE NO. 2 INSTRUMENT PANEL WIRE8.CHECK NO. 2 INSTRUMENT PANEL WIRE (INSTRUMENT PANEL WIRE - NO. 5 INSTRUMENT PANEL WIRE)

Disconnect the No. 2 instrument panel wire connector from the No. 5 instrument panel wire.

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

Measure the voltage according to the value(s) in the table below.

Standard Voltage:w/o Cassette Type PlayerTester ConnectionSwitch ConditionSpecified ConditiongF1-3 (PAON) - Body groundIgnition switch ONBelow 1 VgF1-4 (P-AB) - Body groundIgnition switch ONBelow 1 Vw/ Cassette Type PlayerTester Connection Switch ConditionSpecified ConditionFg1-3 (PAON) - Body groundIgnition switch ONBelow 1 VFg1-2 (P-AB) - Body groundIgnition switch ONBelow 1 V

Turn the ignition switch off.

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

Using a service wire, connect terminals 13 (PAON) and 12 (P-AB) of connector D.

NOTICE:Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:w/o Cassette Type PlayerTester ConnectionConditionSpecified ConditiongF1-3 (PAON) - gF1-4 (P-AB)AlwaysBelow 1 Ωw/ Cassette Type PlayerTester ConnectionConditionSpecified ConditionFg1-3 (PAON) - Fg1-2 (P-AB)AlwaysBelow 1 Ω

Disconnect the service wire from connector D.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:w/o Cassette Type PlayerTester ConnectionConditionSpecified ConditiongF1-3 (PAON) - gF1-4 (P-AB)Always1 MΩ or highergF1-3 (PAON) - Body groundAlways1 MΩ or highergF1-4 (P-AB) - Body groundAlways1 MΩ or higherw/ Cassette Type PlayerTester ConnectionConditionSpecified ConditionFg1-3 (PAON) - Fg1-2 (P-AB)Always1 MΩ or higherFg1-3 (PAON) - Body groundAlways1 MΩ or higherFg1-2 (P-AB) - Body groundAlways1 MΩ or higherNGREPLACE NO. 2 INSTRUMENT PANEL WIREOKREPLACE NO. 5 INSTRUMENT PANEL WIRE9.CHECK CONNECTION OF CONNECTORS

Turn the ignition switch off.

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

Check that the connectors are properly connected to the center airbag sensor and the multi-display assembly or clock.

OK:The connectors are properly connected.NGCONNECT CONNECTORS PROPERLYOK10.CHECK CONNECTORS

Disconnect the connectors from the center airbag sensor and the multi-display assembly or clock.

Check that the connectors (on the center airbag sensor side and multi-display assembly side or clock side) are not damaged.

OK:The connectors are not deformed or damaged.NGREPLACE HARNESS AND CONNECTOROK11.CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT

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

Measure the voltage according to the value(s) in the table below.

Turn the ignition switch off.

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

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

NOTICE:Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

Measure the resistance according to the value(s) in the table below.

Disconnect the service wire from connector B.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:w/ Navigation SystemTester ConnectionConditionSpecified ConditionF79-20 (ARON) - F79-8 (AIR)Always1 MΩ or higherF79-20 (ARON) - Body groundAlways1 MΩ or higherF79-8 (AIR) - Body groundAlways1 MΩ or higherw/o Navigation SystemTester ConnectionConditionSpecified Conditiong1-3 (PAON) - g1-2 (P-AB)Always1 MΩ or higherg1-3 (PAON) - Body groundAlways1 MΩ or higherg1-2 (P-AB) - Body groundAlways1 MΩ or higherNGGo to step 15OK12.CHECK PASSENGER AIRBAG ON/OFF INDICATOR (SOURCE VOLTAGE)

Turn the ignition switch off.

Connect the connectors to the center airbag sensor.

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

Measure the voltage according to the value(s) in the table below.

Standard Voltage:w/ Navigation SystemTester ConnectionSwitch ConditionSpecified ConditionF64-3 (IG) - Body groundIgnition switch ON11 to 14 Vw/o Navigation SystemTester ConnectionSwitch ConditionSpecified Conditiong1-10 (IG+) - Body groundIgnition switch ON11 to 14 VResultResultProceed toOKANG (w/ Navigation System)BNG (w/o Navigation System)CBREPLACE HARNESS AND CONNECTOR (MULTI-DISPLAY - BATTERY) OR BATTERYCREPLACE HARNESS AND CONNECTOR (CLOCK - BATTERY) OR BATTERYA13.CHECK PASSENGER AIRBAG ON/OFF INDICATOR

Turn the ignition switch off.

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

Connect the connector to the multi-display assembly or clock.

Disconnect the connectors from the center airbag sensor.

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

Check the indicator according to the table below.

OK:Tester ConnectionSwitch ConditionPassenger airbag ON/OFF indicatorE47-23 (PAON) - Body groundIgnition switch ON"ON" comes onE47-17 (P-AB) - Body groundIgnition switch ON"OFF" comes onResultResultProceed toOKANG (w/ Navigation System)BNG (w/o Navigation System)CBREPLACE MULTI-DISPLAY ASSEMBLY () CREPLACE CLOCK () A14.CHECK CENTER AIRBAG SENSOR

Turn the ignition switch off.

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

Connect the connectors to the center airbag sensor.

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

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

Clear the DTCs ().

Turn the ignition switch off.

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

Check for DTCs ().

Disconnect the instrument panel wire connector from the No. 2 instrument panel wire.

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

Measure the voltage according to the value(s) in the table below.

Standard Voltage:Tester ConnectionSwitch ConditionSpecified ConditionFE4-13 (PAON) - Body groundIgnition switch ONBelow 1 VFE4-12 (P-AB) - Body groundIgnition switch ONBelow 1 V

Turn the ignition switch off.

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

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

NOTICE:Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:Tester ConnectionConditionSpecified ConditionFE4-13 (PAON) - FE4-12 (P-AB)AlwaysBelow 1 Ω

Disconnect the service wire from connector B.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:Tester Connection ConditionSpecified ConditionFE4-13 (PAON) - FE4-12 (P-AB)Always1 MΩ or higherFE4-13 (PAON) - Body groundAlways1 MΩ or higherFE4-12 (P-AB) - Body groundAlways1 MΩ or higherResultResultProceed toOK (w/ Navigation System)AOK (w/o Navigation System)BNGCBGo to step 16CREPLACE INSTRUMENT PANEL WIREAREPLACE NO. 2 INSTRUMENT PANEL WIRE16.CHECK NO. 2 INSTRUMENT PANEL WIRE (INSTRUMENT PANEL WIRE - NO. 5 INSTRUMENT PANEL WIRE)

Disconnect the No. 2 instrument panel wire connector from the No. 5 instrument panel wire.

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

Measure the voltage according to the value(s) in the table below.

Standard Voltage:w/o Cassette Type PlayerTester ConnectionSwitch ConditionSpecified ConditiongF1-3 (PAON) - Body groundIgnition switch ONBelow 1 VgF1-4 (P-AB) - Body groundIgnition switch ONBelow 1 Vw/ Cassette Type PlayerTester ConnectionSwitch ConditionSpecified ConditionFg1-3 (PAON) - Body groundIgnition switch ONBelow 1 VFg1-2 (P-AB) - Body groundIgnition switch ONBelow 1 V

Turn the ignition switch off.

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

Using a service wire, connect terminals 13 (PAON) and 12 (P-AB) of connector D.

NOTICE:Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

Measure the resistance according to the value(s) in the table below.

Disconnect the service wire from connector D.

Measure the resistance according to the value(s) in the table below.