Passenger Airbag ON/OFF Indicator Circuit Malfunction - Airbag System

SUPPLEMENTAL RESTRAINT SYSTEM: 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 assembly 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 side airbag RH and front seat belt pretensioner RH.

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





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION

(a) Turn the engine switch on (IG).

(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 engine switch off.

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

(c) w/ Navigation system:

Check that the connectors are properly connected to the center airbag sensor assembly and the clock assembly.

OK:

The connectors are properly connected.

(d) w/o Navigation system:

Check that the connectors are properly connected to the center airbag sensor assembly and the integration control and panel assembly.

OK:

The connectors are properly connected.

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

3. CHECK CONNECTORS

(a) w/ Navigation system:

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

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

OK:

The connectors are not deformed or damaged.

(b) w/o Navigation system:

(1) Disconnect the connectors from the center airbag sensor assembly and the integration control and panel assembly.

(2) Check that the connectors (on the center airbag sensor assembly side and integration control and panel assembly side) are not damaged.

OK:

The connectors are not deformed or damaged.

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

4. CHECK PASSENGER AIRBAG ON/OFF INDICATOR

(a) Connect the connector to the clock assembly or integration control and panel assembly.





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

(c) Turn the engine switch on (IG).

(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 (OPEN)
OK -- Continue to next step.

5. CHECK CENTER AIRBAG SENSOR ASSEMBLY

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





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

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

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

(e) Turn the engine switch off.

(f) Turn the engine switch on (IG), 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.

NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY

OK -- USE SIMULATION METHOD TO CHECK Diagnosis System

6. CHECK INSTRUMENT PANEL WIRE (OPEN)





(a) Turn the engine switch off.

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

(c) w/ Navigation system:

Disconnect the connector from the clock assembly.

(d) w/o Navigation system:

Disconnect the connector from the integration control and panel assembly.

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

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

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

Standard resistance:

w/ Navigation system
w/o Navigation system










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

7. CHECK INSTRUMENT PANEL WIRE (SHORT)

(a) Disconnect the service wire from connector B.





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

Standard resistance:

w/ Navigation system
w/o Navigation system










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

8. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND)

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





Standard resistance:

w/ Navigation system
w/o Navigation system










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

9. CHECK INSTRUMENT PANEL WIRE (SHORT TO B+)

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





(b) Turn the engine switch on (IG).

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

Standard voltage:

w/ Navigation system
w/o Navigation system










Result





A -- REPLACE CLOCK ASSEMBLY

B -- REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY

C -- REPLACE INSTRUMENT PANEL WIRE

10. CHECK CONNECTION OF CONNECTORS

(a) Turn the engine switch off.

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

(c) w/ Navigation system:

Check that the connectors are properly connected to the center airbag sensor assembly and the clock assembly.

OK:

The connectors are properly connected.

(d) w/o Navigation system:

Check that the connectors are properly connected to the center airbag sensor assembly and the integration control and panel assembly.

OK:

The connectors are properly connected.

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

11. CHECK CONNECTORS

(a) w/ Navigation system:

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

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

OK:

The connectors are not deformed or damaged.

(b) w/o Navigation system:

(1) Disconnect the connectors from the center airbag sensor assembly and the integration control and panel assembly.

(2) Check that the connectors (on the center airbag sensor assembly side and integration control and panel assembly side) are not damaged.

OK:

The connectors are not deformed or damaged.

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

12. CHECK INSTRUMENT PANEL WIRE (OPEN)

(a) Turn the engine switch off.





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

(c) w/ Navigation system:

Disconnect the connector from the clock assembly.

(d) w/o Navigation system:

Disconnect the connector from the integration control and panel assembly.

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

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

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

Standard resistance:

w/ Navigation system
w/o Navigation system










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

13. CHECK INSTRUMENT PANEL WIRE (SHORT)

(a) Disconnect the service wire from connector B.





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

Standard resistance:

w/ Navigation system
w/o Navigation system










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

14. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND)

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





Standard resistance:

w/ Navigation system
w/o Navigation system










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

15. CHECK INSTRUMENT PANEL WIRE (SHORT TO B+)

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





(b) Turn the engine switch on (IG).

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

Standard voltage:

w/ Navigation system
w/o Navigation system










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

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

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





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

(c) Turn the engine switch on (IG).

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

Standard voltage:

w/ Navigation system
w/o Navigation system










NG -- REPLACE HARNESS AND CONNECTOR (PASSENGER AIRBAG ON/OFF INDICATOR - BATTERY) OR BATTERY
OK -- Continue to next step.

17. CHECK PASSENGER AIRBAG ON/OFF INDICATOR





(a) Turn the engine switch off.

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

(c) w/ Navigation system

Connect the connector to the clock assembly.

(d) w/o Navigation system

Connect the connector to the integration control and panel assembly.

(e) Disconnect the connectors from the center airbag sensor assembly.

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

(g) Turn the engine switch on (IG).

(h) Check the indicator according to the value(s) in the table below.

Result:





Result





A -- REPLACE CLOCK ASSEMBLY

B -- REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY
C -- Continue to next step.

18. CHECK CENTER AIRBAG SENSOR ASSEMBLY





(a) Turn the engine switch off.

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

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

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

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

(f) Clear the DTCs stored in the memory Reading and Clearing Diagnostic Trouble Codes.

(g) Turn the engine switch off.

(h) Turn the engine switch on (IG), 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.

NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY

OK -- USE SIMULATION METHOD TO CHECK Diagnosis System