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. The system then informs the passenger of the front passenger airbag assembly and front passenger side knee airbag status (activated/not activated) with the passenger airbag ON/OFF indicator.
HINT
Approximately 6 seconds after the ignition switch is turned to ON, the passenger airbag ON/OFF indicator will indicate the on/off status depending on the conditions listed below.
INSPECTION PROCEDURE
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, this indicates that a DTC is stored. 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 to ON.
NG -- GO TO AIRBAG SYSTEM Airbag 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 complete." is displayed.
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 -- Continue to next step.
4. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION
(a) Turn the ignition switch to ON.
(b) Check if the passenger airbag ON/OFF indicator correctly indicates the front passenger seat condition.
OK:
NG -- RETIGHTEN FRONT SEAT ASSEMBLY RH BOLT
OK -- END
5. RETIGHTEN FRONT SEAT ASSEMBLY RH BOLT
(a) Turn the ignition switch off.
(b) Loosen the 4 installation bolts of the front seat RH.
(c) for Manual Seat:
(1) Tighten the 4 installation bolts of the front seat RH to the specified torque Installation.
(d) for Power Seat:
(1) Tighten the 4 installation bolts of the front seat RH to the specified torque Installation.
Torque : 37 Nm (377 kgf-cm, 27 ft-lbf)
NEXT -- Continue to next step.
6. PERFORM ZERO POINT CALIBRATION
(a) Turn the ignition switch to ON, and wait for at least 60 seconds.
(b) Using the Techstream, perform the zero point calibration Programming and Relearning.
OK:
"Zero Point Calibration is complete." is displayed.
NG -- READ VALUE USING TECHSTREAM (FRONT PASSENGER SIDE BUCKLE SWITCH)
OK -- Continue to next step.
7. 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 (FRONT PASSENGER SIDE BUCKLE SWITCH)
OK -- END
8. READ VALUE USING TECHSTREAM (FRONT PASSENGER SIDE BUCKLE SWITCH)
(a) Using the Techstream, read the Data List Scan Tool Testing and Procedures.
Occupant Detection
OK:
The display is as specified in the normal condition column.
NG -- CHECK CONNECTOR
OK -- Continue to next step.
9. REPLACE SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY RH
(a) Turn the ignition switch off.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) for Manual Seat:
(1) Replace the separate type front seat cushion spring RH Disassembly.
(d) for Power Seat:
(1) Replace the separate type front seat cushion spring RH Disassembly.
HINT
Perform the inspection using parts from a normal vehicle when possible.
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) Turn the ignition switch to 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 complete." is displayed.
NG -- CHECK CONNECTOR
OK -- 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)
NG -- CHECK CONNECTOR
OK -- 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) Check that the connectors (on the occupant classification ECU side and occupant classification sensor 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.
13. CHECK FOR DTC
(a) Connect the connectors to the occupant classification ECU and 4 occupant detection sensors.
(b) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(c) Turn the ignition switch to ON, and wait for at least 60 seconds.
(d) Clear the DTCs stored in memory Reading and Clearing Diagnostic Trouble Codes.
HINT
* First clear the DTCs stored in the occupant classification ECU, and then clear the DTCs stored in the center airbag sensor.
* Use the Techstream to clear the DTCs of the occupant classification ECU, otherwise the DTCs cannot be cleared.
(e) Turn the ignition switch off.
(f) Turn the ignition switch to ON, and wait for at least 60 seconds.
(g) Using the Techstream, check for DTCs of the occupant classification ECU Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC is not output.
NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY Removal
OK -- Continue to next step.
14. REPLACE OCCUPANT CLASSIFICATION ECU
(a) Connect the connectors to the 4 occupant classification sensors.
(b) Replace the occupant classification ECU Removal.
HINT
Perform the inspection using parts from a normal vehicle when possible.
NEXT -- Continue to next step.
15. PERFORM ZERO POINT CALIBRATION
(a) Turn the ignition switch to ON, and wait for at least 60 seconds.
(b) Using the Techstream, perform the zero point calibration Programming and Relearning.
OK:
"Zero Point Calibration is complete." is displayed.
NEXT -- Continue to next step.
16. 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
17. CHECK CONNECTOR
(a) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(b) Turn the ignition switch off.
(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 Electronic Circuit Inspection Procedure.
OK:
Connectors are not deformed or damaged.
NG -- REPLACE FRONT SEAT WIRE RH
OK -- Continue to next step.
18. REPLACE FRONT SEAT INNER BELT ASSEMBLY RH
(a) Replace the front seat inner belt RH Removal.
NEXT -- Continue to next step.
19. PERFORM ZERO POINT CALIBRATION
(a) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(b) Turn the ignition switch to 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 complete." is displayed.
NEXT -- Continue to next step.
20. 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