Lexus NX: Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Immobiliser System

DTC No.

Detection Item

Link

B2779

Engine Starter Communication Malfunction

B2784

Antenna Coil Open / Short

B278A

Short to GND in Immobiliser System Power Source Circuit

B2790

ID BOX EEPROM Malfunction

B2799-790

Engine Immobiliser System Malfunction

B279A-186

Engine Immobiliser System Communication Line High Fixation

B279C-185

Engine Immobiliser System Presence Detection

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 Engine Starter Communication Malfunction (B2779)

DESCRIPTION If the remote engine start ECU does not respond to the certification ECU (smart key ECU assembly) or the remote engine start ID is not registered*, this DTC is stored. If communication bet

 Antenna Coil Open / Short (B2784)

DESCRIPTION When an open or short circuit is detected in the transponder key amplifier coil built into the power switch, the certification ECU (smart key ECU assembly) stores this DTC. This DTC is als

 Short to GND in Immobiliser System Power Source Circuit (B278A)

DESCRIPTION When there is a short to GND in the power supply for the transponder key amplifier of the power switch, the certification ECU (smart key ECU assembly) stores this DTC. DTC No. Detecti

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 Installation

INSTALLATION CAUTION / NOTICE / HINT CAUTION: Wear protective gloves. Sharp areas on the parts may injure your hands. PROCEDURE 1. INSTALL SEPARATE TYPE REAR SEATBACK COVER LH (REAR SEATBACK HEATER ASSEMBLY LH) (for LH Side) HINT: When installing the seat cover, refer to the precautions in order

 Removal

REMOVAL PROCEDURE 1. REMOVE DECK BOARD ASSEMBLY (a) Remove the deck board assembly. 2. REMOVE NO. 3 DECK BOARD SUB-ASSEMBLY (a) Remove the No. 3 deck board sub-assembly. 3. REMOVE REAR DECK FLOOR BOX (a) Remove the rear deck floor box. 4. REMOVE DECK FLOO

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