Operation CHARM: Car repair manuals for everyone.
Home >> Lexus Truck >> 2010 >> RX 350 AWD V6-3.5L (2GR-FE) >> Repair and Diagnosis >> Restraints and Safety Systems >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Trouble In Passenger Airbag On/Off Indicator >> From 08/2009

From 08/2009





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 passenger side knee airbag condition (activated/not activated) with 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 indicate ON/OFF depending on the conditions listed below.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK SRS WARNING LIGHT

(a) Turn the engine switch on (IG), 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 engine switch is turned on (IG).

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

2. PERFORM ZERO POINT CALIBRATION

(a) Turn the engine switch off.

(b) Connect the Techstream to the DLC3.

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

(d) Using the Techstream, perform 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 Sensitivity Check Programming and Relearning.

Standard:

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 engine 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 (377 kgf-cm, 27 ft-lbf)

NEXT -- Continue to next step.

5. PERFORM ZERO POINT CALIBRATION

(a) Connect the Techstream to the DLC3.

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

(c) Using the Techstream, perform Zero Point Calibration Programming and Relearning.

OK:

"Zero Point Calibration is complete." is displayed.

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

6. PERFORM SENSITIVITY CHECK

(a) Using the Techstream, perform Sensitivity Check Programming and Relearning.

Standard:

27 to 33 kg (59.5 to 72.8 lb)

NG -- READ VALUE USING PASSENGER SIDE BUCKLE SWITCH

OK -- END

7. READ VALUE USING PASSENGER SIDE BUCKLE SWITCH

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

(b) Using the Techstream, read 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 changes correctly in accordance with the operation of the buckle switch.

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

8. CHECK CONNECTORS

(a) Turn the engine switch off.

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

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

(d) Check that the terminals of connectors are not damaged.

OK:

The terminals are not deformed or damaged.

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

9. REPLACE OCCUPANT CLASSIFICATION ECU

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

(b) 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.

(b) Connect the Techstream to the DLC3.

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

(d) Using the Techstream, perform Zero Point Calibration Programming and Relearning.

OK:

"Zero Point Calibration is complete." is displayed.

NEXT -- Continue to next step.

11. PERFORM SENSITIVITY CHECK

(a) Using the Techstream, perform Sensitivity Check Programming and Relearning.

Standard:

27 to 33 kg (59.5 to 72.8 lb)

NEXT -- END

12. CHECK CONNECTORS

(a) Turn the engine switch off.

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

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

(d) Check that the terminals of connectors are not damaged.

OK:

The terminals 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) Connect the connector to the occupant classification ECU.

(b) Replace the front seat inner belt assembly RH Removal.

NEXT -- Continue to next step.

14. PERFORM ZERO POINT CALIBRATION

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

(b) Connect the Techstream to the DLC3.

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

(d) Using the Techstream, perform Zero Point Calibration Programming and Relearning.

OK:

"Zero Point Calibration is complete." is displayed.

NEXT -- Continue to next step.

15. PERFORM SENSITIVITY CHECK

(a) Using the Techstream, perform Sensitivity Check Programming and Relearning.

Standard:

27 to 33 kg (59.5 to 72.8 lb)

NEXT -- END
pro multis · About Operation CHARM