Lexus NX: Navigation System
Lexus NX Service Manual / Audio & Visual & Telematics / Navigation / Multi Info Display / Navigation System
- Precaution
- Parts Location
- System Diagram
- System Description
- How To Proceed With Troubleshooting
- Operation Check
- Customize Parameters
- Problem Symptoms Table
- Terminals Of Ecu
- Dtc Check / Clear
- Freeze Frame Data
- Data List / Active Test
- Diagnostic Trouble Code Chart
- Lost Communication with Haptic Device (B1323-B1326)
- NTSC Disconnected (from Park Assist/Monitoring ECU) (B1535,C1622)
- GVIF Disconnected (from Extension Module to H/U) (B153A)
- Extension Module Disconnected 2 (B1543)
- HD Radio Tuner Malfunction (B1551,B15A0,B15B3,B15B5,B15B7,B15BA,B15F9)
- Extension Module Malfunction 2 (B1556)
- Touch Pad Sensor Malfunction (B1559)
- Touch Pad Vibration Driver Malfunction (B155A)
- Touch Pad Memory Module Malfunction (B155B)
- GVIF Disconnected (from Park Assist/Monitoring ECU to EMV/MM Integrated Device) (B1574)
- GVIF Disconnected (from EMV/MM Integrated Device to Multi Display) (B1575)
- Voice Recognition Microphone Disconnected (B1579)
- USB Device Malfunction (B1585)
- AV Signal Stoppage (Low Battery Voltage) (B158F)
- Stereo Component Amplifier Malfunction (B15A3)
- Display Malfunction (B15A6,B15B0)
- Navigation Processor Malfunction (B15AD)
- Short in GPS Antenna (B15C0,B15C1)
- Speed Signal Malfunction (B15C2)
- Speaker Output Short (B15C3)
- MOST Communication Malfunction (B15D0)
- Stereo Component Amplifier Disconnected (B15D3)
- Display Disconnected (B15D6)
- Telematics Transceiver Disconnected (B15DB)
- Air Conditioner ECU Vehicle Information Reading/Writing Processor Malfunction (B15F5)
- Main Body ECU Vehicle Information Reading/Writing Process Malfunction (B15F6)
- Certification ECU Vehicle Information Reading/Writing Process Malfunction (B15F7)
- D-Seat ECU Vehicle Information Reading/Writing Process Malfunction (B15F8)
- XM Tuner Antenna Disconnected (B15FE,B15FF)
- Camera ECU Malfunction (C1610)
- Sending Malfunction (Navigation to APGS) (U0073,U0100,U0129,U0140,U0155,U0164,U0198,U023B,U0265,U0293,U1110)
- Satellite Radio Broadcast cannot be Received
- Satellite Radio Broadcast cannot be Selected or After Selecting Broadcast, Broadcast cannot be Added into Memory
- Weather and traffic information cannot be obtained
- Noise Occurs
- No Sound can be Heard from Speakers
- Sound Quality is Bad Only when Disc is Played (Volume is Too Low)
- Disc cannot be Inserted or is Ejected Right After Insertion
- Disc cannot be Ejected
- CD/DVD Sound Skips
- Radio Broadcast cannot be Received or Poor Reception
- Illumination for Panel Switch does not Come on with Tail Switch ON
- Display does not Dim when Light Control Switch is Turned ON
- Panel Switches do not Function
- Screen Flicker or Color Distortion
- Poor Sound Quality in All Modes (Low Volume)
- Cursor or Map Rotates when Vehicle Stopped
- "No GPS signal" mark is displayed
- Voice Guidance does not Function
- Route cannot be Calculated
- Voice is not Recognized
- Cellular Phone Registration Failure
- Cellular Phone Inspection
- Sound of Portable Player cannot be Heard from Speakers or Sound is Low
- Does not Play even after Bluetooth Audio Mode is Selected
- Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device
- Noise Occurs or Sound Skips when Portable Player Plays
- Portable Player cannot be Connected Manually/Automatically
- Registered Device cannot be Deleted
- Portable Player cannot be Registered
- USB Audio System Recognition/Play Error
- Stereo Jack Adapter Light does not Illuminate
- Remote Touch Screen Does not Generate Vibration Feedback
- Switch Lights of Remote Touch do not Illuminate
- Switch Lights of Remote Touch Always Illuminate or cannot be Controlled Using Rheostat
- Switch Operation of Remote Touch not Accepted
- Pointer Displayed/not Displayed Repeatedly
- Pointer not Displayed on Screen or Pointer does not Move
- Black Screen
- Steering Pad Switch Circuit
- Illumination Circuit
- Speaker Circuit
- Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter
- Data Signal Circuit between Radio Receiver and Stereo Jack Adapter
- Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver
- AVC-LAN Circuit
- Vehicle Speed Signal Circuit between Navigation ECU and Combination Meter
- Vehicle Speed Signal Circuit between Stereo Component Amplifier and Combination Meter
- Reverse Signal Circuit between Radio Receiver Assembly and Navigation ECU
- Start Up Signal Circuit between Radio Receiver Assembly and Navigation ECU
- Microphone Circuit
- Visual Mute Signal Circuit between Radio Receiver and Multi-display
- Radio Receiver Power Source Circuit
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Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE: After the power switch is turned off, the radio receiver assembly records various types of memory and set
Parts Location
PARTS LOCATION ILLUSTRATION *A w/ Parking Assist Monitor System *B w/ Panoramic View Monitor System *1 NO. 2 ENGINE ROOM RELAY BLOCK - DCM FUSE (w/ Manual [SOS] Switch) - ECU-B NO.1 FU
System Diagram
SYSTEM DIAGRAM
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Inspection
INSPECTION PROCEDURE 1. INSPECT SHIFT LOCK CONTROL ECU (a) Measure the voltage according to the value(s) in the table below. Standard Voltage: Tester Connection Condition Specified Condition 5 (IG) - Body ground Power switch on (IG) 11 to 14 V Power switch off Below 1 V
Invalid Data Received from HVAC Control Module (U0424-537)
DESCRIPTION If there is a malfunction in the air conditioning amplifier assembly, DTC U0424-537 will be stored. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate U0424-537 Invalid Data Received from HVAC Control Module Air conditioning amplifier as
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