Lexus NX: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use these procedures to troubleshoot the airbag system.
- *: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
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| 2. | INSPECT AUXILIARY BATTERY VOLTAGE |
(a) Measure the auxiliary battery voltage with the power switch off.
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding.
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| 3. | CHECK CAN COMMUNICATION SYSTEM* |
(a) Check for DTCs.
Click here .gif)
| DTC is output | .gif) | GO TO CAN COMMUNICATION SYSTEM |
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| 4. | SRS WARNING LIGHT CHECK |
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| 5. | CHECK DTC (Present and Past DTCs)* |
(a) Check for DTCs.
Click here
| DTC is not output | | GO TO PROBLEM SYMPTOMS TABLE |
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| 6. | DIAGNOSTIC TROUBLE CODE CHART |
(a) Diagnostic Trouble Code Chart.
Click here
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| 7. | CIRCUIT INSPECTION* |
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| 8. | REPAIR |
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| 9. | CLEAR DTC (Present and Past DTCs)* |
(a) Clear the DTCs.
Click here
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| 10. | CHECK DTC (Present and Past DTCs)* |
(a) Check for DTCs.
Click here
| DTC is output | | GO TO DIAGNOSTIC TROUBLE CODE CHART |
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| 11. | CONFIRMATION TEST |
| NEXT | | END |
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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 pr
Terminals Of Ecu
TERMINALS OF ECU AIRBAG ECU ASSEMBLY Terminal No. Terminal Symbol Destination I58-1 P2+ Instrument panel passenger airbag assembly (Front passenger side squib 2nd step) I58-2 P2-
Diagnosis System
DIAGNOSIS SYSTEM SYMPTOM SIMULATION HINT: The most difficult case in troubleshooting is when no problem symptoms occur. In such a case, a thorough problem analysis must be carried out. A simulation of
SEE MORE:
Inspection
INSPECTION PROCEDURE 1. INSPECT SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY NOTICE:
Do not remove the steering sensor from the spiral with sensor cable sub-assembly.
As the spiral with sensor cable sub-assembly may break, do not rotate the spiral with sensor cable sub-assembly more than the specified
Curtain Shield Airbag Sensor (RH) (B1630,B1632,B1635,B1637)
DESCRIPTION The side airbag sensor assembly LH or RH consists of a lateral deceleration sensor, etc. If the airbag ECU assembly receives signals from the lateral deceleration sensor, it determines whether the SRS should be activated. DTC B1630, B1632, B1635 or B1637 is stored when a malfunction is d
