Monday, February 1, 2021

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) B CODE Page 2200


SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B1905/74-B1908/74: Short in Front Pretensioner Squib LH Circuit



B1905/74 - Short in Front Pretensioner Squib LH Circuit



B1906/74 - Open in Front Pretensioner Squib LH Circuit



B1907/74 - Short to GRD in Front Pretensioner Squib LH Circuit



B1908/74 - Short to B+ in Front Pretensioner Squib LH Circuit



DESCRIPTION



The front pretensioner squib LH circuit consists of the center airbag sensor assembly and front seat outer belt assembly LH.



This circuit instructs the SRS to deploy when deployment conditions are met.



These DTCs are recorded when a malfunction is detected in the front pretensioner squib LH circuit.



WIRING DIAGRAM



INSPECTION PROCEDURE



HINT



* Perform the simulation method by selecting Check Mode (Signal Check) using the Techstream See: Restraints and Safety



Systems/Air Bag Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Check Mode Procedure.



* After selecting Check Mode (Signal Check), perform the simulation method by wiggling each connector of the airbag system



or driving the vehicle on a city or rough road See: Accessories and Optional Equipment/Antitheft and Alarm



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



PROCEDURE



1. CHECK CONNECTORS



(a) Turn the engine switch off.



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

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