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 assembly and front seat side airbag assembly condition (activated/not activated) by the passenger airbag ON/OFF indicator.

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





INSPECTION PROCEDURE

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

PROCEDURE

1. CHECK DTC

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

(b) Clear the DTCs stored in the occupant classification ECU Reading and Clearing Diagnostic Trouble Codes.

(c) Clear the DTCs stored in the center airbag sensor assembly Reading and Clearing Diagnostic Trouble Codes.

(d) Turn the engine switch off.

(e) Turn the engine switch on (IG).

(f) Check the DTCs of the occupant classification ECU Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC is not output.

OK -- REPAIR CIRCUITS INDICATED BY OUTPUT DTCs
NG -- Continue to next step.

2. READ VALUE USING DATA LIST (PASSENGER SIDE BUCKLE SWITCH)

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

(b) Using Techstream, read the DATA LIST Scan Tool Testing and Procedures.

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





OK:

The tester display changes correctly in accordance with the operation of the buckle switch.

NG -- REPLACE FRONT SEAT INNER BELT ASSEMBLY RH Removal
OK -- Continue to next step.

3. READ VALUE USING DATA LIST (SEAT BELT TENSION SENSOR)

(a) Fasten the passenger side seat belt.

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

(c) Using Techstream, read the value of the DATA LIST Scan Tool Testing and Procedures.





OK:

When there is no tension on the belt, 39 to 64 is displayed on the tester.

NG -- REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH Removal
OK -- Continue to next step.

4. CHECK PASSENGER AIRBAG ON/OFF INDICATOR (PERFORM SENSITIVITY CHECK)

(a) Perform the sensitivity check Initialization.

NG -- REPLACE FRONT SEAT CUSHION ASSEMBLY
OK -- Continue to next step.

5. PERFORM ZERO POINT CALIBRATION

(a) Connect Techstream to the DLC3.

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

(c) Using Techstream, perform the zero point calibration Initialization.

NEXT -- Continue to next step.

6. CHECK DTC

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

(b) Clear the DTCs stored in the occupant classification ECU Reading and Clearing Diagnostic Trouble Codes.

(c) Clear the DTCs stored in the center airbag sensor assembly Reading and Clearing Diagnostic Trouble Codes.

(d) Turn the engine switch off.

(e) Turn the engine switch on (IG).

(f) Check the DTCs of the occupant classification ECU Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B1797 is not output.

NG -- GO TO DTC B1797 B1797
OK -- Continue to next step.

7. REPLACE FRONT SEAT CUSHION ASSEMBLY

(a) Turn the engine switch off.

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

(c) Replace the front seat cushion assembly (with occupant classification ECU and occupant classification sensor) Removal.

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

(e) Turn the engine switch on (IG).

(f) Clear the DTCs stored in the occupant classification ECU Reading and Clearing Diagnostic Trouble Codes.

(g) Clear the DTCs stored in the center airbag sensor assembly Reading and Clearing Diagnostic Trouble Codes.

(h) Turn the engine switch off.

(i) Turn the engine switch on (IG).

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

OK:

DTC is not output.

NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY Removal
OK -- Continue to next step.

8. PERFORM ZERO POINT CALIBRATION

(a) Connect Techstream to the DLC3.

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

(c) Using Techstream, perform the zero point calibration Initialization.

(d) Turn the engine switch off.

(e) Turn the engine switch on (IG).

(f) Clear the DTCs stored in the occupant classification ECU Reading and Clearing Diagnostic Trouble Codes.

HINT
If the DTCs are not cleared at this time, past DTCs will remain.

NEXT -- Continue to next step.

9. CHECK DTC

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

(b) Clear the DTCs stored in the occupant classification ECU Reading and Clearing Diagnostic Trouble Codes.

(c) Clear the DTCs stored in the center airbag sensor assembly Reading and Clearing Diagnostic Trouble Codes.

(d) Turn the engine switch off.

(e) Turn the engine switch on (IG).

(f) Check the DTCs of the occupant classification ECU Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B1797 is not output.

NEXT -- Continue to next step.

10. PERFORM SENSITIVITY CHECK

(a) Perform the sensitivity check Initialization.

NEXT -- END