Trouble In Passenger Airbag ON/OFF Indicator

SUPPLEMENTAL RESTRAINT SYSTEMS: 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 assembly and front seat side airbag assembly condition (activated/not activated) with 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

HINT
When the indicator is malfunctioning, if the SRS warning light is off, follow the procedures below as a DTC is not output. If the SRS warning light is on, a DTC is output. Troubleshoot for the output DTC.

PROCEDURE

1. CHECK SRS WARNING LIGHT

(a) Turn the ignition switch to ON, and check the SRS warning light condition.

HINT
If this trouble occurs, the SRS warning light is off. If the light is on, a DTC is output. Troubleshoot for the output DTC.

OK:

After the primary check period, the SRS warning light goes off.

HINT
The primary check is performed for approximately 6 seconds after the ignition switch is turned ON.

NG -- GO TO DTC CHART Occupant Classification System
OK -- Continue to next step.

2. PERFORM ZERO POINT CALIBRATION

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to 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 the Techstream.

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

3. PERFORM SENSITIVITY CHECK

(a) Using the 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 (374 kgf-cm, 27 ft-lbf)

NEXT -- Continue to next step.

5. PERFORM ZERO POINT CALIBRATION

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

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to 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 the Techstream.

NG -- READ VALUE USING TECHSTREAM (PASSENGER SIDE BUCKLE SWITCH)
OK -- Continue to next step.

6. PERFORM SENSITIVITY CHECK

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

Standard range:

27 to 33 kg (59.5 to 72.8 lb)

NG -- READ VALUE USING TECHSTREAM (PASSENGER SIDE BUCKLE SWITCH)

OK -- END

7. READ VALUE USING TECHSTREAM (PASSENGER SIDE BUCKLE SWITCH)

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

(b) Using the Techstream, read the Data List Scan Tool Testing and Procedures.

(1) Read the display when the passenger side buckle switch is operated.

Occupant Detection





OK:

The Techstream display changed correctly according to the operation of buckle switch.

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

8. CHECK CONNECTOR

(a) Turn the ignition switch off.

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

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

(d) Check that the connectors (on the occupant classification ECU side and 4 occupant classification sensors side) are not damaged.

OK:

Connectors are not deformed or damaged.

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

9. REPLACE OCCUPANT CLASSIFICATION ECU

(a) Replace the occupant classification ECU Removal.

NEXT -- Continue to next step.

10. PERFORM ZERO POINT CALIBRATION

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

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to 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 the Techstream.

NEXT -- Continue to next step.

11. PERFORM SENSITIVITY CHECK

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

Standard range:

27 to 33 kg (59.5 to 72.8 lb)

NEXT -- END

12. CHECK CONNECTOR

(a) Turn the ignition switch off.

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

(c) Disconnect the connectors from the occupant classification ECU and front seat inner belt RH.

(d) Check that the connectors (on the occupant classification ECU side and front seat inner belt RH side) are not damaged.

OK:

Connectors are not deformed or damaged.

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

13. REPLACE FRONT SEAT INNER BELT ASSEMBLY RH

(a) Replace the front seat inner belt RH Removal.

NEXT -- Continue to next step.

14. PERFORM ZERO POINT CALIBRATION

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

(b) Connect the Techstream to the DLC3.

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

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

OK:

Zero point calibration is completed using the Techstream.

NEXT -- Continue to next step.

15. PERFORM SENSITIVITY CHECK

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

Standard range:

27 to 33 kg (59.5 to 72.8 lb)

NEXT -- END