Lexus NX: Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Occupant Classification System

DTC No.

Detection Item

Link

B1771

Passenger Side Buckle Switch Circuit Malfunction

B1780

Front Occupant Classification Sensor LH Circuit Malfunction

B1782

Rear Occupant Classification Sensor LH Circuit Malfunction

B1785

Front Occupant Classification Sensor LH Collision Detection

B1787

Rear Occupant Classification Sensor LH Collision Detection

B1790

Center Airbag Sensor Assembly Communication Circuit Malfunction

B1793

Occupant Classification Sensor Power Supply Circuit Malfunction

B1794

Open in Occupant Classification ECU Battery Positive Line

B1795

Occupant Classification ECU Malfunction

B1796

Sleep Operation Failure of Occupant Classification ECU

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 Passenger Side Buckle Switch Circuit Malfunction (B1771)

DESCRIPTION The front passenger side buckle switch circuit consists of the occupant detection ECU and front seat inner belt assembly RH. DTC B1771 is stored when a malfunction is detected in the front

 Front Occupant Classification Sensor LH Circuit Malfunction (B1780)

DESCRIPTION The front occupant classification sensor LH circuit consists of the occupant detection ECU and front occupant classification sensor LH. DTC B1780 is stored when a malfunction is detected i

 Rear Occupant Classification Sensor LH Circuit Malfunction (B1782)

DESCRIPTION The rear occupant classification sensor LH circuit consists of the occupant detection ECU and rear occupant classification sensor LH. DTC B1782 is stored when a malfunction is detected in

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 Removal

REMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH and LH sides. The procedure listed below is for the LH side. PROCEDURE 1. REMOVE REAR WHEEL Click here 2. REMOVE REAR SUSPENSION ARM COVER LH (a) Remove the 2 bolts and disengage the 2 claws to remove the rear suspe

 Assist Map Number Un-Writing (C1581)

DESCRIPTION This DTC will be stored if the power steering ECU assembly determines that the assist map is not written in the ECU. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note C1581 Assist Map Number Un-Writing Assi

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