Passenger Airbag ON/OFF Indicator Circuit Malfunction - Airbag System (except TMC Made)

SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM (except TMC Made): 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 clock assembly (passenger airbag ON/OFF indicator).

The passenger airbag ON/OFF indicator indicates the operation condition of the front passenger airbag, front seat side 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

PROCEDURE

1. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION

(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:

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

2. CHECK CONNECTORS

(a) Turn the ignition switch off.

(b) Disconnect the cable from the negative (-) battery terminal.

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

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

OK:

The connectors are properly connected.

HINT
If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.

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

(e) Check that the terminals of connectors are not damaged.

OK:

The terminals are not deformed or damaged.

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

3. CHECK PASSENGER AIRBAG ON/OFF INDICATOR

(a) Connect the connector to the clock assembly.

(b) Connect the cable to the negative (-) battery terminal.

(c) Turn the ignition 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 PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (OPEN)
OK -- Continue to next step.

4. CHECK CENTER AIRBAG SENSOR ASSEMBLY

(a) Turn the ignition switch off.

(b) Disconnect the cable from the negative (-) battery terminal.

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

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

(d) Connect the cable to the negative (-) battery terminal.

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

(f) Clear the DTCs stored in the memory Airbag System (except TMC Made).

(g) Turn the ignition switch off.

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

(i) Check for DTCs Airbag System (except TMC Made).

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 Removal

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

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

(a) Turn the ignition switch off.

(b) Disconnect the cable from the negative (-) battery terminal.

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

(c) Disconnect the connector from the clock assembly.

(d) Using SST, connect terminals 23 (PAON) and 17 (P-AB) of connector B.

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

SST : 09843-18040

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

Standard Resistance:

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

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

(a) Disconnect SST from connector B.

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

Standard Resistance:

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

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

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

Standard Resistance:

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

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

(a) Connect the cable to the negative (-) battery terminal.

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

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

Standard Voltage:

NG -- REPLACE WIRE HARNESS

OK -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY Removal

9. CHECK CONNECTORS

(a) Turn the ignition switch off.

(b) Disconnect the cable from the negative (-) battery terminal.

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

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

OK:

The connectors are properly connected.

HINT
If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.

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

(e) Check that the terminals of connectors are not damaged.

OK:

The terminals are not deformed or damaged.

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

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

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

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

SST : 09843-18040

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

Standard Resistance:

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

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

(a) Disconnect SST from connector B.

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

Standard Resistance:

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

12. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT TO GROUND)

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

Standard Resistance:

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

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

(a) Connect the cable to the negative (-) battery terminal.

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

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

Standard Voltage:

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

14. CHECK CLOCK ASSEMBLY (SOURCE VOLTAGE)

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

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

Standard Voltage:

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

15. CHECK PASSENGER AIRBAG ON/OFF INDICATOR

(a) Turn the ignition switch off.

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

16. CHECK CENTER AIRBAG SENSOR ASSEMBLY

(a) Turn the ignition switch off.