Lexus NX: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedures to troubleshoot the clock system.
- *: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
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| 2. | CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK |
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| 3. | INSPECT AUXILIARY BATTERY VOLTAGE |
(a) Measure the auxiliary battery voltage with the power switch off.
Standard voltage:
11 to 14 V
HINT:
If the auxiliary battery voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.
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| 4. | CHECK NAVIGATION SYSTEM* |
(a) Using the Techstream, check if the navigation system is functioning normally.
(1) Check for DTCs and note any codes that are output.
Click here .gif)
(2) Clear the DTCs.
Click here
(3) Recheck for DTCs by simulating the operation indicated by the DTCs.
Click here
OK:
DTCs are not output.
| NG | .gif) | GO TO NAVIGATION SYSTEM |
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| 5. | PROBLEM SYMPTOMS TABLE |
HINT:
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 | | PERFORM TROUBLESHOOTING BASED ON PROBLEM SYMPTOM |
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| 6. | OVERALL ANALYSIS AND TROUBLESHOOTING |
(a) Terminals of ECU
Click here
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| 7. | ADJUST, REPAIR OR REPLACE |
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| 8. | CONFIRMATION TEST |
| NEXT | | END |
READ NEXT:
Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZING WITH MULTI-DISPLAY (a) Turn the power switch on (IG). (b) Time zone setting (1) Using the multi-display, select "Setup", "General", "Clock", and then time zone and cha
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order
Terminals Of Ecu
TERMINALS OF ECU CLOCK ASSEMBLY Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition I163-1 (ILL-) - Body ground G - Body ground Illumination signa
SEE MORE:
Check Bus 3 Lines for Short Circuit
DESCRIPTION There may be a short circuit between the CAN main bus lines and/or CAN branch lines when the resistance between terminals 6 (CA3H) and 21 (CA3L) of the central gateway ECU (network gateway ECU) is below 54 Ω. Symptom Trouble Area
*1: w/ Telematics Transceiver
*2: w/ Bus Buffer
Operation Check
OPERATION CHECK HINT:
This function shows the telematics network status when the DCM (telematics transceiver) was operated. Use this when no DTC is present but this telematics system was unable to connect to the call center. This symptom may occur if cell phone signal strength is very weak.
Thi
