Lexus NX: Smart Access System With Push-button Start (for Start Function)
Lexus NX Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Smart Access System With Push-button Start (for Start Function)
- Precaution
- Parts Location
- System Diagram
- System Description
- How To Proceed With Troubleshooting
- Operation Check
- Customize Parameters
- Problem Symptoms Table
- Terminals Of Ecu
- Diagnosis System
- Dtc Check / Clear
- Diagnostic Trouble Code Chart
- Ignition Hold Monitor Malfunction (B2271)
- ACC Monitor Malfunction (B2274)
- STSW Monitor Malfunction (B2275)
- Detecting Vehicle Submersion (B2277)
- Vehicle Speed Signal Malfunction (B2282,B2283)
- Steering Lock Position Signal Circuit Malfunction (B2285)
- Lost Communication with Main Body ECU (U0140,U0142,U0155,U0293,U1117)
- Power Source Mode does not Change to ON (IG)
- Power Source Mode does not Change to ON (ACC)
- Power Source Mode does not Change to ON (READY)
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Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE:
After the power switch is turned off, there may be a waiting time before disconnecting the negative (-
Parts Location
PARTS LOCATION ILLUSTRATION *1 NO. 1 ENGINE ROOM RELAY BLOCK - IG2-MAIN RELAY *2 NO. 2 ENGINE ROOM RELAY BLOCK - IG1 RELAY *3 SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEM
System Diagram
SYSTEM DIAGRAM Component Outline Power switch
Transponder key amplifier
Turns on the power and starts the hybrid control system.
Contains a built-in transponder key amplifier t
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System Diagram
SYSTEM DIAGRAM *1 ECM *2 Engine Coolant Temperature Sensor *3 Air Fuel Ratio Sensor (for Bank 1 Sensor 1) *4 Heated Oxygen Sensor (for Bank 1 Sensor 2) *5 Crankshaft Position Sensor *6 Intake Manifold *7 Manifold Absolute Pressure Sensor *8 EGR Valve Assembly
Lost Communication with Main Body ECU (U0140,U0142,U0155,U0293,U1117)
DESCRIPTION These DTCs are stored when there is a CAN communication error between the hybrid vehicle control ECU, certification ECU (smart key ECU assembly), ECM, main body ECU (multiplex network body ECU) or combination meter assembly, and data from the option connector (bus buffer ECU) cannot be r
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