Lexus NX: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the headup display system.
- *: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
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| 2. | CUSTOMER PROBLEM ANALYSIS |
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| 3. | INSPECT AUXILIARY BATTERY VOLTAGE |
(a) Measure the auxiliary battery voltage.
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.
|
| 4. | CHECK CAN COMMUNICATION SYSTEM* |
(a) Check if CAN communication DTCs are output.
Click here .gif)
| Result | Proceed to |
|---|---|
| CAN communication DTCs are not output. | A |
| CAN communication DTCs are output. | B |
| B | .gif) | GO TO CAN COMMUNICATION SYSTEM |
|
| 5. | CHECK FOR DTC* |
(a) Check for DTCs.
Click here
(b) Clear the DTCs.
Click here
(c) Recheck for DTCs.
Click here
| Result | Proceed to |
|---|---|
| DTCs are not output. | A |
| DTCs are output. | B |
| B | | GO TO DIAGNOSTIC TROUBLE CODE CHART |
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| 6. | PROBLEM SYMPTOM CONFIRMATION |
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| 7. | SYMPTOM SIMULATION |
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| 8. | PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table.
Click here
| Result | Proceed to |
|---|---|
| Fault is not listed in Problem Symptoms Table. | A |
| Fault is listed in Problem Symptoms Table. | B |
| B | | GO TO PROBLEM SYMPTOMS TABLE |
|
| 9. | PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM* |
(a) Terminals of ECU.
Click here
(b) Data List / Active Test.
Click here
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| 10. | REPAIR OR REPLACE |
|
| 11. | CONFIRMATION TEST |
| NEXT | | END |
READ NEXT:
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 symptom are listed in order of
Terminals Of Ecu
TERMINALS OF ECU HEADUP DISPLAY (METER MIRROR SUB-ASSEMBLY) (a) Measure the voltage and resistance according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Des
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Head Up Display / Tr
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Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION NOTICE:
When using the Techstream with the power switch off to confirm DTCs or Data List information related to the smart access system with push button start, the Techstream may not operate unless either of the following is performed: 1) Turn a courtesy light switch
Speaker Circuit (B1360)
DESCRIPTION This DTC is stored when a connection malfunction, such as an open, is detected in the wire harness between the stereo component equalizer assembly and No. 1 speaker assembly with box. DTC No. Detection Item DTC Detection Condition Trouble Area B1360 Speaker Circuit Open
