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B1660








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

DTC 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 accessory meter assembly.
This circuit indicates the operation condition of the front passenger airbag assembly and the front passenger side - side airbag and front passenger side front seat belt pretensioner.
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 OPERATION
(a) Turn the ignition 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:
A
The passenger airbag ON/OFF indicator always comes on.
B
The passenger airbag ON/OFF indicator does not come on.
B -- CHECK CONNECTION OF CONNECTOR
A -- Continue to next step.

2. CHECK CONNECTION OF CONNECTOR
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Check that the connector is properly connected to the center airbag sensor assembly.
OK:
The connector is connected.

NG -- CONNECT CONNECTOR, THEN CHECK DTC
OK -- Continue to next step.

3. CHECK ACCESSORY METER ASSEMBLY (PASSENGER AIRBAG ON / OFF INDICATOR)




(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connector from the accessory meter assembly.
(d) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(e) Turn the ignition switch on (IG).
(f) Check the passenger airbag ON/OFF indicator operation.
OK:
The passenger airbag ON/OFF indicator ("ON" and "OFF") do not come on.

NG -- CHECK PASSENGER AIRBAG ON / OFF INDICATOR CIRCUIT (SHORT TO GROUND)
OK -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
4. CHECK PASSENGER AIRBAG ON / OFF INDICATOR CIRCUIT (SHORT TO GROUND)




(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable form the battery, and wait for at least 90 seconds.
(c) Disconnect the connectors from the center airbag sensor assembly.
(d) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- CHECK INSTRUMENT PANEL WIRE NO. 2 (SHORT TO GROUND)
OK -- Continue to next step.

5. CHECK PASSENGER AIRBAG ON / OFF INDICATOR CIRCUIT (SHORT)




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






NG -- CHECK INSTRUMENT PANEL WIRE NO. 2 (SHORT)
OK -- Continue to next step.

6. CHECK PASSENGER AIRBAG ON / OFF INDICATOR CIRCUIT (OPEN)




(a) Using a service wire, connect D23-23 (PAON) and D23-17 (P-AB) of connector "B".

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

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






NG -- CHECK INSTRUMENT PANEL WIRE NO. 2 (OPEN)
OK -- Continue to next step.

7. CHECK PASSENGER AIRBAG ON / OFF INDICATOR CIRCUIT (SHORT TO B+)




(a) Disconnect the service wire from connector "B".
(b) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(c) Turn the ignition switch on (IG).
(d) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- CHECK INSTRUMENT PANEL WIRE NO. 2 (SHORT TO B+)
OK -- Continue to next step.

8. CHECK ACCESSORY METER ASSEMBLY




(a) Turn the ignition 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 and the accessory meter assembly.
(d) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(e) Turn the ignition switch on (IG), and wait for at least 60 seconds.
(f) Clear the DTCs stored in memory DTC Check / Clear.
(g) Turn the ignition switch off.
(h) Turn the ignition switch on (IG), and wait for at least 60 seconds.
(i) Check the DTCs DTC Check / Clear.
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 ACCESSORY METER ASSEMBLY
OK -- USE SIMULATION METHOD TO CHECK
9. CHECK INSTRUMENT PANEL WIRE NO. 2 (SHORT TO GROUND)




(a) Disconnect the instrument panel wire No. 2 connector from the instrument panel wire.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE NO. 2
OK -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE
10. CHECK INSTRUMENT PANEL WIRE NO. 2 (SHORT)




(a) Disconnect the instrument panel wire No. 2 connector from the instrument panel wire.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE NO. 2
OK -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE
11. CHECK INSTRUMENT PANEL WIRE NO. 2 (OPEN)




(a) Disconnect the service wire from connector "B".
(b) Disconnect the instrument panel wire No. 2 connector from the instrument panel wire.
(c) Using a service wire, connect ED2-13 (PAON) and ED2-14 (P-AB) of connector "D".

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

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






NG -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE NO. 2
OK -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE
12. CHECK INSTRUMENT PANEL WIRE NO. 2 (SHORT TO B+)




(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the instrument panel wire No. 2 connector from the instrument panel wire.
(d) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(e) Turn the ignition switch on (IG).
(f) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE NO. 2
OK -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE
13. CHECK CONNECTION OF CONNECTOR
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Check that the connectors are properly connected to the center airbag sensor assembly and the accessory meter assembly.
OK:
The connectors are connected.

NG -- CONNECT CONNECTOR, THEN CHECK DTC
OK -- Continue to next step.

14. CHECK WIRE HARNESS (SOURCE VOLTAGE)




(a) Disconnect the connector from the accessory meter assembly.
(b) Connect the negative (-) terminal cable to the battery, and wait at least 2 seconds.
(c) Turn the ignition switch on (IG).
(d) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- REPAIR OR REPLACE WIRE HARNESS
OK -- Continue to next step.

15. CHECK ACCESSORY METER ASSEMBLY




(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connectors from the center airbag sensor assembly.
(d) Connect the connector to the accessory meter assembly.
(e) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(f) Turn the ignition switch on (IG).




(g) Check that the passenger airbag ON/OFF indicator condition in the table below.
Result:






NG -- REPLACE ACCESSORY METER ASSEMBLY
OK -- Continue to next step.

16. CHECK CENTER AIRBAG SENSOR ASSEMBLY




(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Connect the connector 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 ignition switch on (IG), and wait for at least 60 seconds.
(f) Clear the DTCs stored in memory DTC Check / Clear.
(g) Turn the ignition switch off.
(h) Turn the ignition switch on (IG), and wait for at least 60 seconds.
(i) Check the DTCs DTC Check / Clear.
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
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