- Abnormal timestamp signal from main body ECU (multiplex network body ECU)
- Abnormal trip count signal from main body ECU (multiplex network body ECU)
Lexus NX: Fail-safe Chart
Lexus NX Service Manual / Audio & Visual & Telematics / Audio / Video / Asc System / Fail-safe Chart
FAIL-SAFE CHART
ASC System
(a) The stereo component equalizer assembly stores DTCs and freeze frame data and stops sound output if it detects any of the following abnormalities.
| Item | Abnormality Detection Condition | Fail-safe Control | DTC Output | Return Condition |
|---|---|---|---|---|
| CAN communication malfunction | Communication with brake booster with master cylinder assembly (skid control ECU) interrupted | Sound output is stopped | U0129 (Freeze frame data stored) | Signals are received normally and communication returns to normal |
| Communication with main body ECU (multiplex network body ECU) interrupted | Sound output is stopped | U0142 (Freeze frame data stored) | Signals are received normally and communication returns to normal | |
| Communication with hybrid vehicle control ECU interrupted | Sound output is stopped | U0293 (Freeze frame data stored) | Signals are received normally and communication returns to normal | |
| Abnormal vehicle speed signal sent from booster with master cylinder assembly (skid control ECU) | Sound output is stopped | U0418 (Freeze frame data stored) | Signals are received normally and communication returns to normal | |
| | Not applicable | U0422 (Freeze frame data stored) | Signals are received normally and communication returns to normal | |
| Sound output is stopped | U0594 (Freeze frame data stored) | Signals are received normally and communication returns to normal | |
| Speaker connection malfunction | When vehicle sound switch volume is set to medium or higher and sounds are being output, an open is detected for 0.15 seconds or more | Sound output is stopped | B1360 (Freeze frame data stored) | When vehicle sound switch volume is set to medium or higher and sounds are being output, an open is not detected for 0.15 seconds or more |
| Switch connection malfunction | The VSLI terminal voltage to the CPU of the stereo compartment equalizer assembly is 4.5 V or more | Sound output is stopped | B1361 (Freeze frame data stored) | The VSLI terminal voltage to the CPU of the stereo compartment equalizer assembly is less than 4.0 V and connection returns to normal |
| ECU internal malfunction |
| Sound output is stopped | B1362 (Freeze frame data stored) | The IG power source voltage to the CPU of the stereo component equalizer assembly is 2.2 V or more and the malfunctioning part returns to normal |
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DIAGNOSTIC TROUBLE CODE CHART ASC System DTC No. Detection Item Link B1360 Speaker Circuit B1361 Volume Switch Circuit B1362 ECU Malfunction U0129 Lost Co
Speaker Circuit (B1360)
DESCRIPTION This DTC is stored when a connection malfunction, such as an open, is detected in the wire harness between the stereo component equalizer assembly and No. 1 speaker assembly with box. D
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