Lexus NX: Horn System
Parts Location
PARTS LOCATION
ILLUSTRATION
| *1 | LOW PITCHED HORN ASSEMBLY | *2 | HIGH PITCHED HORN ASSEMBLY |
| *3 | HORN RELAY | *4 | SPIRAL CABLE SUB-ASSEMBLY |
| *5 | STEERING PAD SWITCH ASSEMBLY | *6 | HORN BUTTON ASSEMBLY |
| *7 | HORN FUSE | *8 | NO. 2 ENGINE ROOM RELAY BLOCK |
System Diagram
SYSTEM DIAGRAM
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Horn System| Symptom | Suspected Area | Link |
|---|---|---|
| Horn does not sound | HORN fuse | - |
| HORN relay | | |
| Low pitched horn assembly | | |
| High pitched horn assembly | | |
| Steering pad switch assembly | | |
| Spiral cable sub-assembly | | |
| Horn button assembly | | |
| Harness or connector | - |
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Relay
On-vehicle InspectionON-VEHICLE INSPECTION PROCEDURE 1. INSPECT HORN RELAY ASSEMBLY (a) Remove the horn relay assembly. (b) Measure the resistance according to the value(s) in the tabl
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Installation
INSTALLATION CAUTION / NOTICE / HINT HINT:
Use the same procedure for the LH side and RH side.
The following procedure is for the LH side.
PROCEDURE 1. INSTALL FRONT SKID CONTROL SENSOR WIRE LH (w/ AVS) (a) Install the sensor clamp as follows. (1) Install the grommet to the absorber brack
Lost Communication with Brake System Control Module (U0129,U0142,U0293)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area U0129 Lost Communication with Brake System Control Module No communication with brake booster with master cylinder assembly (skid control ECU)
CAN communication system
Brake booster with master cylinder a
