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 and then indicates whether the front passenger airbag is activated or not through the passenger airbag ON / OFF indicator illumination.
The passenger airbag ON / OFF indicator illumination changes depending on the front passenger seat condition as shown in the table below.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK SRS WARNING LIGHT
(a) Turn the power switch ON (IG), and check the SRS warning light condition.
OK:
The SRS warning light does not come on.
NG -- CHECK FOR DTC
OK -- Continue to next step.

2. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION
(a) Turn the power switch ON (IG).
(b) Check if the passenger airbag ON/OFF indicator correctly indicates the front passenger seat condition.
OK:






OK -- END
NG -- Continue to next step.

3. PERFORM ZERO POINT CALIBRATION
(a) Turn the power switch OFF.
(b) Connect the Techstream to the DLC3.
(c) Turn the power switch ON (IG).
(d) Using the Techstream, perform the zero point calibration Programming and Relearning.
OK:
"Zero Point Calibration is complete." is displayed.
NG -- RETIGHTEN FRONT SEAT ASSEMBLY RH BOLT
OK -- Continue to next step.

4. PERFORM SENSITIVITY CHECK
(a) Using the Techstream, perform the sensitivity check Programming and Relearning.
Standard value:
27 to 33 kg (59.52 to 72.75 lb)
NG -- RETIGHTEN FRONT SEAT ASSEMBLY RH BOLT
OK -- END
5. RETIGHTEN FRONT SEAT ASSEMBLY RH BOLT
(a) Turn the power switch OFF.
(b) Loosen the 4 installation bolts of the front seat RH.
(c) Tighten the 4 installation bolts of the front seat RH to the specified torque Components.
Torque:
37 N*m {380 kgf*cm, 27 ft.*lbf}
NEXT -- Continue to next step.

6. PERFORM ZERO POINT CALIBRATION
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch ON (IG).
(c) Using the Techstream, perform the zero point calibration Programming and Relearning.
OK:
"Zero Point Calibration is complete." is displayed.
NG -- CHECK CONNECTOR
OK -- Continue to next step.

7. PERFORM SENSITIVITY CHECK
(a) Using the Techstream, perform the sensitivity check Programming and Relearning.
Standard value:
27 to 33 kg (59.52 to 72.75 lb)
NG -- CHECK CONNECTOR
OK -- END
8. CHECK CONNECTOR
(a) Turn the power switch OFF.
(b) Disconnect the cable from the negative (-) battery terminal, 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:
The connectors are connected.
(d) Disconnect the connectors from the occupant classification ECU and the 4 occupant classification sensors.
(e) Check that the connectors are not damaged or deformed.
OK:
The connectors are normal.
NG -- REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR
OK -- Continue to next step.

9. CHECK FOR DTC
(a) Connect the connectors to the occupant classification ECU and the 4 occupant classification sensors.
(b) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(c) Turn the power switch ON (IG), and wait for at least 60 seconds.
(d) Turn the power switch OFF.
(e) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(f) Turn the power switch ON (IG), and wait for at least 60 seconds.
(g) Check the DTCs Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC is not output.
NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
OK -- Continue to next step.

10. REPLACE OCCUPANT CLASSIFICATION ECU
(a) Turn the power switch OFF.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Replace the occupant classification ECU Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.

11. 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 power switch ON (IG).
(d) Using the Techstream, perform the zero point calibration Programming and Relearning.
OK:
"Zero Point Calibration is complete." is displayed.
NEXT -- Continue to next step.

12. PERFORM SENSITIVITY CHECK
(a) Using the Techstream, perform the sensitivity check Programming and Relearning.
Standard value:
27 to 33 kg (59.52 to 72.75 lb)
NEXT -- END