Lexus NX: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure to troubleshoot the occupant classification system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

CUSTOMER PROBLEM ANALYSIS

(a) Confirm problem symptoms.

Click here

NEXT

3.

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 to the next step.

NEXT

4.

PASSENGER AIRBAG ON/OFF INDICATOR CHECK

(a) Proceed to Diagnosis System.

Click here

NEXT

5.

CHECK DTC (Present and History DTCs)*

(a) Proceed to DTC Check / Clear.

Click here

Body Electrical > Occupant Detection > Trouble Codes
DTC is not output

GO TO PROBLEM SYMPTOMS TABLE

DTC is output

6.

DIAGNOSTIC TROUBLE CODE CHART

(a) Proceed to Diagnostic Trouble Code Chart.

Click here

NEXT

7.

CIRCUIT INSPECTION*

NEXT

8.

REPAIR

NEXT

9.

CLEAR DTCS (Present and Past DTCs)*

(a) Proceed to DTC Check / Clear.

Click here

Body Electrical > Occupant Detection > Clear DTCs
NEXT

10.

CHECK DTC*

(a) Proceed to DTC Check / Clear.

Click here

Body Electrical > Occupant Detection > Trouble Codes
DTC is output

GO TO DIAGNOSTIC TROUBLE CODE CHART

DTC is not output

11.

CONFIRM SIMULATION

(a) Check the passenger airbag ON/OFF indicator condition.

Result

Proceed to

Passenger airbag ON/OFF indicator operates normally

A

Passenger airbag ON/OFF indicator ("OFF") and SRS warning light come on

B

B

GO TO AIRBAG SYSTEM

A

12.

CONFIRMATION TEST

NEXT

END

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