Trouble In Passenger Airbag ON/OFF Indicator

SUPPLEMENTAL RESTRAINT SYSTEM: OCCUPANT CLASSIFICATION SYSTEM: Trouble in Passenger Airbag ON/OFF Indicator
- Trouble in Passenger Airbag ON/OFF Indicator

DESCRIPTION

The occupant classification system detects the front passenger seat condition. It then informs a passenger of the front passenger airbag, the front seat side airbag RH and front seat belt pretensioner RH condition (activated/not activated) by the passenger airbag ON/OFF indicator.

HINT
Approximately 6 seconds after the ignition switch is turned ON, the passenger airbag ON/OFF indicator will be ON/OFF depending on the conditions listed below.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC (AIRBAG SYSTEM)

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

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

HINT
First clear DTCs stored in the occupant classification ECU and then in the center airbag sensor.

(c) Turn the ignition switch off.

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

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

OK:

DTC is not output.

NG -- REPAIR CIRCUITS INDICATED BY OUTPUT DTCS Airbag System
OK -- Continue to next step.

2. PERFORM ZERO POINT CALIBRATION

(a) Turn the ignition switch off.

(b) Connect a Techstream to the DLC3.

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

(d) Using the Techstream, perform the zero point calibration Programming and Relearning.

OK:

Zero point calibration is completed using tester.

NG -- RETIGHTEN FRONT SEAT ASSEMBLY RH BOLT
OK -- Continue to next step.

3. PERFORM SENSITIVITY CHECK

(a) Using a Techstream, perform the sensitivity check Programming and Relearning.

Standard range:

27 to 33 kg (59.5 to 72.8 lb)

NG -- RETIGHTEN FRONT SEAT ASSEMBLY RH BOLT

OK -- END

4. RETIGHTEN FRONT SEAT ASSEMBLY RH BOLT

(a) Turn the ignition switch off.

(b) Loosen the 4 installation bolts of the front seat assembly RH.

(c) Tighten the 4 installation bolts of the front seat assembly RH to the specified torque.

Torque : 37 Nm (375 kgf-cm, 27 ft-lbf)

NEXT -- Continue to next step.

5. PERFORM ZERO POINT CALIBRATION

(a) Connect a Techstream to the DLC3.

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

(c) Using the Techstream, perform the zero point calibration Programming and Relearning.

OK:

Zero point calibration is completed using tester.

NG -- CHECK CONNECTION OF CONNECTOR
OK -- Continue to next step.

6. PERFORM SENSITIVITY CHECK

(a) Using a Techstream, perform the sensitivity check Programming and Relearning.

Standard range:

27 to 33 kg (59.5 to 72.8 lb)

NG -- CHECK CONNECTION OF CONNECTOR

OK -- END

7. 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 occupant classification ECU and the 4 occupant classification sensors.

OK:

Connectors are connected.

NG -- CONNECT CONNECTOR
OK -- Continue to next step.

8. CHECK CONNECTOR

(a) Disconnect the connectors from the occupant classification ECU and the 4 occupant classification sensors.

(b) Check that the connectors (on the occupant classification ECU side and 4 occupant classification sensors side) are not damaged Electronic Circuit Inspection Procedure.

OK:

Connectors are not deformed or damaged.

NG -- REPLACE FRONT SEAT WIRE RH
OK -- Continue to next step.

9. CHECK FOR DTC (OCCUPANT CLASSIFICATION SYSTEM)

(a) Connect the connectors to the occupant classification ECU and the 4 occupant classification sensors.

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

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

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

HINT
First clear DTCs stored in the occupant classification ECU and then in the center airbag sensor.

(e) Turn the ignition switch off.

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

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

OK:

DTC is not output.

NG -- REPAIR CIRCUITS INDICATED BY OUTPUT DTCS Occupant Classification System
OK -- Continue to next step.

10. REPLACE OCCUPANT CLASSIFICATION ECU

(a) Turn the ignition switch off.

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

(c) Replace the occupant classification ECU Removal.

NEXT -- Continue to next step.

11. PERFORM ZERO POINT CALIBRATION

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

(b) Connect a Techstream to the DLC3.

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

(d) Using the Techstream, perform the zero point calibration Programming and Relearning.

NEXT -- Continue to next step.

12. PERFORM SENSITIVITY CHECK

(a) Using a Techstream, perform the sensitivity check Programming and Relearning.

Standard range:

27 to 33 kg (59.5 to 72.8 lb)

NEXT -- END