Lexus NX: Fail-safe Chart
FAIL-SAFE CHART
FAIL-SAFE FUNCTION
(a) Headlight ECU sub-assembly
(1) The headlight ECU sub-assembly stops light operation if the following malfunctions are detected.
| Malfunction | Multi-information Display Warning | DTC Output | ||
|---|---|---|---|---|
| Lighting on/off | LED light source malfunction | Low beam | Displayed | Output |
| High beam | Not Displayed | Output | ||
| Fan malfunction | Displayed | Output | ||
| Other than above (communication with main body ECU (multiplex network body ECU)) | Displayed | Output | ||
| Automatic headlight beam level control system | Displayed | Output | ||
| AFS (adaptive front-lighting system)* | Displayed | Output | ||
| Power supply | IG voltage line malfunction | Displayed | Output | |
| Other than an IG voltage line malfunction | Not displayed | Not output | ||
- *: w/ AFS (Adaptive Front-lighting System)
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Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA (a) Whenever an automatic headlight beam level control system DTC is stored, the headlight ECU subassembly LH stores the current vehicle state as freeze frame data.
Data List / Active Test
DATA LIST / ACTIVE TEST 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 part is faul
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Automatic Headlight Beam Level Control System (for Triple Beam Headlight) DTC No. Detection Item Link B2410 Headlight Swivel Motor LH Communication Malfuncti
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Inspection
INSPECTION PROCEDURE 1. INSPECT SEPARATE TYPE REAR SEATBACK COVER RH (REAR SEATBACK HEATER ASSEMBLY RH) (for RH Side) (a) Check the separate type rear seatback cover RH (rear seatback heater assembly RH). (1) Measure the resistance according to the value(s) in the table below. Standard Resistance
Drive Motor "A" Inverter Voltage Sensor Circuit Range / Performance (P0D2E-565)
DTC SUMMARY MALFUNCTION DESCRIPTION VH voltage sensor signal malfunction in the inverter for the motor. Internal inverter malfunction
Internal circuit malfunction in the inverter for the motor
Malfunction in the sensors for inverter control (current sensor, voltage sensors (VH, VL), etc.)
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