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
SEE MORE:
Unable to Unlock Steering Wheel (Hybrid Control System cannot Start)
DESCRIPTION The steering lock actuator assembly activates the steering lock motor and moves the lock bar into the steering column to lock the steering. The steering may not unlock when the lock bar gets stuck in the lock hole of the steering column. In this case, if the power switch is turned on (IG
Brake System (C1A50)
DESCRIPTION When an electronically controlled brake system malfunction signal sent from the brake booster with master cylinder assembly (skid control ECU) is detected by the clearance warning ECU assembly, DTC C1A50 is stored. DTC No. Detection Item DTC Detection Condition Trouble Area
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