Lexus NX: How To Proceed With Troubleshooting

Lexus NX Service Manual / Vehicle Interior / Lighting (int) / Lighting System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

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

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

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.

NEXT

3.

CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the CAN communication system is functioning normally.

Click here

CAN DTC is output

GO TO CAN COMMUNICATION SYSTEM

CAN DTC is not output

4.

CHECK COMMUNICATION FUNCTION OF SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function)*

(a) Use the Techstream to check if the smart access system with push-button start (for Entry Function) is functioning normally.

Click here

Body Electrical > Entry&Start > Trouble Codes
DTC is output

GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function)

DTC is not output

5.

PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here

Fault is listed in Problem Symptoms Table

ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE

Fault is not listed in Problem Symptoms Table

6.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check

Click here

(b) Terminals of ECU

Click here

(c) Data List / Active Test

Click here

NEXT

7.

ADJUST, REPAIR OR REPLACE

NEXT

8.

CONFIRM TEST

NEXT

END

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