Lexus NX: Fail-safe Chart
Lexus NX Service Manual / Vehicle Interior / Supplemental Restraint Systems / Occupant Classification System / Fail-safe Chart
FAIL-SAFE CHART
FAIL SAFE FUNCTION
(a) The following chart shows the status of the controls when the system is normal and malfunctioning.
- The passenger airbag ON/OFF indicator ("ON" and "OFF") comes on for approximately 4 seconds, and then goes off for approximately 2 seconds.
- Approximately 6 seconds after the power switch is turned on (IG), the passenger airbag ON/OFF indicator will indicate ON or OFF depending on the conditions listed below.
| Condition | ON Indicator | OFF Indicator | Instrument Panel Passenger Airbag Assembly | Front Seat Airbag Assembly RH | Front Seat Cushion Airbag Assembly RH | Curtain Shield Airbag Assembly RH | Front Seat Belt Pretensioner RH | Selectable Force Limiter RH |
|---|---|---|---|---|---|---|---|---|
|
○: Deployable
X: Not deployable | ||||||||
| Adult is seated. | On | Off | ○ | ○ | ○ | ○ | ○ | ○ |
| Child is seated. | Off | On | X | ○ | X | ○ | ○ | ○ |
| Child restraint system is installed. | Off | On | X | ○ | X | ○ | ○ | ○ |
| Vacant | Off | On | X | ○ | X | ○ | ○ | ○ |
| Failure | Off | On | X | ○ | X | ○ | ○ | ○ |
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Data List / Active Test
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Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Occupant Classification System DTC No. Detection Item Link B1771 Passenger Side Buckle Switch Circuit Malfunction B1780 Front Occupant Classificat
Passenger Side Buckle Switch Circuit Malfunction (B1771)
DESCRIPTION The front passenger side buckle switch circuit consists of the occupant detection ECU and front seat inner belt assembly RH. DTC B1771 is stored when a malfunction is detected in the front
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How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. INSPECT AUXILIARY BATTERY VOLTAGE Standard voltage: 11 to 14 V If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding.
NE
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE: If the main body ECU (multiplex network body ECU) is replaced, refer to the Smart Access System with Push-button Start (for Entry Function). Click here HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are list
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