Passenger Airbag ON/OFF Indicator Circuit Malfunction - Airbag System

SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B1660/43: Passenger Airbag ON/OFF Indicator Circuit Malfunction
B1660/43 - Passenger Airbag ON/OFF Indicator Circuit Malfunction

DESCRIPTION

The passenger airbag ON/OFF indicator circuit consists of the center airbag sensor and passenger airbag ON/OFF indicator.

The passenger airbag ON/OFF indicator indicates the operation condition of the front passenger 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.





WIRING DIAGRAM





INSPECTION PROCEDURE

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

PROCEDURE

1. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION

(a) Turn the ignition switch to ON.

(b) Check the passenger airbag ON/OFF indicator operation.

HINT
Refer to the normal condition of the passenger airbag ON/OFF indicator Diagnosis System.





Result





B -- CHECK CONNECTION OF CONNECTORS
A -- Continue to next step.

2. CHECK CONNECTION OF CONNECTORS

(a) Turn the ignition switch off.

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

(c) Check that the connectors are properly connected to the center airbag sensor and clock.

OK:

The connectors are properly connected.

NG -- CONNECT CONNECTORS PROPERLY
OK -- Continue to next step.

3. CHECK CONNECTORS

(a) Disconnect the connectors from the center airbag sensor and clock.

(b) Check that the connectors (on the center airbag sensor side and clock side) are not damaged.

OK:

The connectors are not deformed or damaged.





Text in Illustration





NG -- REPLACE INSTRUMENT PANEL WIRE
OK -- Continue to next step.

4. CHECK PASSENGER AIRBAG ON/OFF INDICATOR

(a) Connect the connector to the clock.





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

(c) Turn the ignition switch to ON.

(d) Check the passenger airbag ON/OFF indicator operation.

OK:

The passenger airbag ON/OFF indicator does not come on.

NG -- CHECK INSTRUMENT PANEL WIRE (CENTER AIRBAG SENSOR - CLOCK)
OK -- Continue to next step.

5. CHECK CENTER AIRBAG SENSOR

(a) Connect the connector to the center airbag sensor.





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

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

(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(e) Turn the ignition switch off.

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

(g) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B1660/43 is not output.

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

Text in Illustration





NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY Removal

OK -- USE SIMULATION METHOD TO CHECK Diagnosis System

6. CHECK INSTRUMENT PANEL WIRE (CENTER AIRBAG SENSOR - CLOCK)

(a) Turn the ignition switch off.





Text in Illustration





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

(c) Disconnect the connector from the clock.

(d) 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.

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

Standard Resistance:





(f) Disconnect the service wire from connector B.

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

Standard Resistance:





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

(i) Turn the ignition switch to ON.

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

Standard Voltage:





NG -- REPLACE INSTRUMENT PANEL WIRE

OK -- REPLACE CLOCK ASSEMBLY Removal

7. CHECK CONNECTION OF CONNECTORS

(a) Turn the ignition switch off.

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

(c) Check that the connectors are properly connected to the center airbag sensor and clock.

OK:

The connectors are properly connected.

NG -- CONNECT CONNECTORS PROPERLY
OK -- Continue to next step.

8. CHECK CONNECTORS

(a) Disconnect the connectors from the center airbag sensor and clock.

(b) Check that the connectors (on the center airbag sensor side and clock side) are not damaged.

OK:

The connectors are not deformed or damaged.

NG -- REPLACE INSTRUMENT PANEL WIRE
OK -- Continue to next step.

9. CHECK INSTRUMENT PANEL WIRE (CENTER AIRBAG SENSOR - CLOCK)

(a) Turn the ignition switch off.





Text in Illustration





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

(c) Disconnect the connector from the clock.

(d) 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.

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

Standard Resistance:





(f) Disconnect the service wire from connector B.

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

Standard Resistance:





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

(i) Turn the ignition switch to ON.

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

Standard Voltage:





NG -- REPLACE INSTRUMENT PANEL WIRE
OK -- Continue to next step.

10. CHECK PASSENGER AIRBAG ON/OFF INDICATOR (SOURCE VOLTAGE)

(a) Connect the connectors to the center airbag sensor.





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

(c) Turn the ignition switch to ON.

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

Standard Voltage:





Text in Illustration





NG -- REPLACE HARNESS AND CONNECTOR (CLOCK - BATTERY)
OK -- Continue to next step.

11. CHECK PASSENGER AIRBAG ON/OFF INDICATOR

(a) Turn the ignition switch off.





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

(c) Connect the connector to the clock.

(d) Disconnect the connectors from the center airbag sensor.

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

(f) Turn the ignition switch to ON.

(g) Check the indicator according to the table below.

OK:





Text in Illustration





NG -- REPLACE CLOCK ASSEMBLY Removal
OK -- Continue to next step.

12. CHECK CENTER AIRBAG SENSOR

(a) Turn the ignition switch off.





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

(c) Connect the connectors to the center airbag sensor.

(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 Reading and Clearing Diagnostic Trouble Codes.

(g) Turn the ignition switch off.

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

(i) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B1660/43 is not output.

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

Text in Illustration





NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY Removal

OK -- USE SIMULATION METHOD TO CHECK Diagnosis System