2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) B CODE Page 1587

Clearing Diagnostic Trouble Codes.

(f) Clear the DTCs stored in the center airbag sensor assembly See: Restraints and Safety Systems/Air Bag Systems/Testing and

Inspection/Reading and Clearing Diagnostic Trouble Codes/DTC Check / Clear.

(g) Turn the engine switch off.

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

(i) Using the Techstream, check for DTCs of the occupant classification ECU See: Restraints and Safety Systems/Testing and

Inspection/Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B1790 is not output.

HINT

Codes other than DTC B1790 may be output at this time, but they are not related to this check.

NG -- REPLACE OCCUPANT CLASSIFICATION ECU

OK -- USE SIMULATION METHOD TO CHECK See: Accessories and Optional Equipment/Antitheft and Alarm

Systems/Diagrams/Diagnostic Aids/How To Troubleshoot ECU Controlled Systems/How To Proceed With Troubleshooting

7. REPLACE OCCUPANT CLASSIFICATION ECU

(a) Turn the engine switch off.

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

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

(c) Replace the occupant classification ECU See: Restraints and Safety Systems/Air Bag Systems/Seat Occupant Sensor/Service and

Repair/Occupant Classification ECU/Removal.

HINT

Perform the inspection using parts from a normal vehicle if possible.

NEXT -- Continue to next step.

8. 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 See: Restraints and Safety Systems/Testing and Inspection/Programming and

Relearning.

OK:

"Zero Point Calibration is complete." is displayed.

NEXT -- Continue to next step.

9. PERFORM SENSITIVITY CHECK

(a) Using the Techstream, perform Sensitivity Check See: Restraints and Safety Systems/Testing and Inspection/Programming and

Relearning.

Standard:

27 to 33 kg (59.5 to 72.8 lb)

NEXT -- Continue to next step.