Lexus NX manuals

Lexus NX: Diagnosis System

Lexus NX Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Smart Access System With Push-button Start (for Entry Function) / Diagnosis System

DIAGNOSIS SYSTEM

DESCRIPTION

(a) Smart access system with push-button start (for Entry Function) data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link Connector 3 (DLC3). In some cases, a malfunction may be occurring in the smart access system with push-button start. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs.

CHECK DLC3

(a) Check the DLC3.

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INSPECT AUXILIARY BATTERY VOLTAGE

(a) Measure the auxiliary battery voltage with the power switch off.

Standard voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the auxiliary battery.

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 Dtc Check / Clear

DTC CHECK / CLEAR CHECK FOR DTC NOTICE: When using the Techstream with the power switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds

 Data List / Active Test

DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a

 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 B27

SEE MORE:

 EPB System Malfunction (C13AF)

DESCRIPTION The skid control ECU (brake booster with master cylinder assembly) is connected to the parking brake ECU assembly via CAN communication. If an electric parking brake system malfunction occurs, this code is output. DTC No. Detection Item INF Code DTC Detection Condition Trouble

 A/C Inverter Start-up Signal System Malfunction (B1473)

DESCRIPTION The inverter activation signal is sent to the compressor with motor assembly from the hybrid vehicle control ECU. Compressor control is stopped and this DTC is stored if there is an open or short in the signal circuit. DTC No. Detection Item DTC Detection Condition Trouble Area

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