Lexus NX: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use this procedure to troubleshoot the theft deterrent system.
- *: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
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| 2. | CUSTOMER PROBLEM ANALYSIS |
(a) Interview the customer to confirm the trouble.
Click here .gif)
|
| 3. | SYMPTOM SIMULATION |
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| 4. | INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Use the Techstream to check if the CAN communication system is functioning normally.
Click here
| CAN communication system DTC is output | .gif) | GO TO CAN COMMUNICATION SYSTEM |
|
| 5. | INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* |
(a) Use the Techstream to check if the LIN communication system is functioning normally.
Click here
| LIN communication system DTC is output | | GO TO LIN COMMUNICATION SYSTEM |
|
| 6. | CHECK POWER DOOR LOCK CONTROL SYSTEM |
(a) Refer to the power door lock control system.
Click here
| Power door lock control system is abnormal | | GO TO POWER DOOR LOCK CONTROL SYSTEM |
|
| 7. | CHECK WIRELESS DOOR LOCK CONTROL SYSTEM |
(a) Refer to the wireless door lock control system.
Click here
| Result | Proceed to |
|---|---|
| Wireless door lock control system is normal | A |
| Wireless door lock control system is abnormal | B |
| B | | GO TO WIRELESS DOOR LOCK CONTROL SYSTEM |
|
| 8. | CHECK SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) |
(a) Refer to the smart access system with push-button start (for Entry Function).
Click here
| Result | Proceed to |
|---|---|
| Smart access system with push-button start (for Entry Function) is normal | A |
| Smart access system with push-button start (for Entry Function) is abnormal | B |
| B | | GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) |
|
| 9. | CHECK SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function) |
(a) Refer to the smart access system with push-button start (for Start Function).
Click here
| Result | Proceed to |
|---|---|
| Smart access system with push-button start (for Start Function) is normal | A |
| Smart access system with push-button start (for Start Function) is abnormal | B |
| B | | GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function) |
|
| 10. | CHECK IMMOBILISER SYSTEM |
(a) Refer to the immobiliser system.
Click here
| Immobiliser system is abnormal | | GO TO IMMOBILISER SYSTEM |
|
| 11. | CHECK LIGHTING SYSTEM (EXT) |
(a) Refer to the lighting system (EXT).
-
for Triple Beam Headlight
Click here
-
for Single Beam Headlight
Click here
| Result | Proceed to |
|---|---|
| Lighting system (EXT) is normal | A |
| Lighting system (EXT) is abnormal (for Triple Beam Headlight) | B |
| Lighting system (EXT) is abnormal (for Single Beam Headlight) | C |
| B | | GO TO LIGHTING SYSTEM (EXT) |
| C | | GO TO LIGHTING SYSTEM (EXT) |
|
| 12. | CHECK LIGHTING SYSTEM (INT) |
(a) Refer to the lighting system (INT).
Click here
| Lighting system (INT) is normal (w/o Power Back Door System) | | GO TO STEP 14 |
| Lighting system (INT) is abnormal | | GO TO LIGHTING SYSTEM (INT) |
|
| 13. | CHECK POWER BACK DOOR SYSTEM |
(a) Refer to the power back door system.
Click here
| Power back door closer system is abnormal | | GO TO POWER BACK DOOR SYSTEM |
|
| 14. | CHECK HORN SYSTEM |
(a) Refer to the horn system.
Click here
| Horn system is abnormal | | GO TO HORN SYSTEM |
|
| 15. | 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 |
|
| 16. | PERFORM TROUBLESHOOTING ACCORDING TO MALFUNCTION SYMPTOM* |
(a) System Description.
Click here
(b) Terminals of ECU.
Click here
(c) Data List / Active Test.
Click here
|
| 17. | ADJUST, REPAIR OR REPLACE |
|
| 18. | CONFIRM TEST |
| NEXT | | END |
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PROBLEM SYMPTOMS TABLE HINT:
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