Lexus NX: How To Proceed With Troubleshooting
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
| 2. | CONFIRM PROBLEM SYMPTOMS |
|
| 3. | CUSTOMER PROBLEM ANALYSIS |
(a) Check if the vehicle has been jump started due to a discharged auxiliary battery.
| Result | Proceed to |
|---|---|
| The vehicle has never been jump started. | A |
| The vehicle has been jump started due to a discharged auxiliary battery. | B |
| B |  | GO TO ON-VEHICLE INSPECTION / CHECK AUXILIARY BATTERY VOLTAGE |
|
| 4. | CAN COMMUNICATION SYSTEM CHECK |
(a) Using the Techstream, display the CAN Bus Check screen and check that all ECUs and sensors that are connected to the CAN communication system are displayed on the screen.
| NG | | GO TO CAN COMMUNICATION SYSTEM |
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| 5. | CHECK FOR DTCS |
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
| B | | GO TO DTC CHART |
|
| 6. | ON-VEHICLE INSPECTION |
| Result | Proceed to |
|---|---|
| Malfunctioning area has not been determined | A |
| Malfunctioning area has been determined | B |
| B | | GO TO STEP 8 |
|
| 7. | CHECK FOR INTERMITTENT PROBLEMS |
|
| 8. | REPAIR OR REPLACE |
| NEXT | | END |
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On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. CHECK AUXILIARY BATTERY (a) Check that the auxiliary battery cables are connected to the correct terminals. HINT: If they are not, connect them properly. (b) Check t
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Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE:
If the auxiliary battery voltage is low, the PTC heater, seat heater system (w/ Seat Heater System) and climate control seat system (w/ Climate Control Seat System) may not operate. When "High Power Consumption Partial Limit On AC/Heater Operation." is displayed on
Lost Communication with Cruise Control Front Distance Range Sensor Missing Message (U023587,U0242)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Note U023587 Lost Communication with Cruise Control Front Distance Range Sensor Missing Message
Power switch on (IG)
A communication malfunction with the millimeter wave radar sensor
