Lexus NX: Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Smart Access System with Push-button Start (for Entry Function)

DTC No.

Detection Item

Link

B27A1

Open in Driver Side Electrical Antenna Circuit

B27A2

Open in Front Passenger Side Electrical Antenna Circuit

B27A3

Open in Rear Door Electrical Antenna Circuit, Drivers Side

B27A4

Open in Rear Door Electrical Antenna Circuit, Front Passengers Side

B27A5

Open in Front Floor Electrical Key Oscillator Circuit

B27A6

Open in Rear Floor Electrical Key Oscillator Circuit

B27A7

Open in Inside Luggage Compartment Electrical Key Oscillator Circuit

B27A8

Open in Outside Luggage Compartment Electrical Key Antenna Circuit

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 Operation History List

OPERATION HISTORY LIST NOTICE: The cause of a malfunction is stored in the RAM or EEPROM in the certification ECU (smart key ECU assembly). As the cause of a malfunction stored in the RAM will be c

 Open in Driver Side Electrical Antenna Circuit (B27A1)

DESCRIPTION The certification ECU (smart key ECU assembly) generates a request signal and transmits the signal to the front door outside handle assembly (for driver door) (electrical key antenna) at i

 Open in Front Passenger Side Electrical Antenna Circuit (B27A2)

DESCRIPTION The certification ECU (smart key ECU assembly) generates a request signal and transmits the signal to the front door outside handle assembly (for front passenger door) (electrical key ante

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 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 in the front occupant classification sensor LH circuit. DTC No. Detection Item DTC Detection C

 Terminals Of Ecu

TERMINALS OF ECU CHECK FOLD SEAT CONTROL ECU (REAR RIGHT SEAT) (a) Disconnect the h3 and h4 fold seat control ECU (rear right seat) connectors. (b) Measure the resistance and voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condi

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