CAUTION / NOTICE / HINT
HINT:
PROCEDURE
1. | VEHICLE BROUGHT TO WORKSHOP |
|
2. | CUSTOMER PROBLEM ANALYSIS |
What | Vehicle model, system name |
When | Date, time, occurrence frequency |
Where | Road conditions |
Under what conditions? | Driving conditions, weather conditions |
How did it happen? | Problem symptoms |
|
3. | INSPECT BATTERY VOLTAGE |
(a) Measure the battery voltage.
Standard Voltage:
11 to 14 V
HINT:
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
|
4. | CHECK CABIN |
(a) Check that condensation is not likely to occur in the cabin and that the temperature is not high or extremely low in the cabin.
OK:
Condensation is not likely being produced and the temperature is not high or extremely low.
HINT:
NG | ![]() | SET CABIN TO APPROPRIATE TEMPERATURE |
|
5. | CHECK CAN COMMUNICATION SYSTEM* |
(a) Check if CAN communication system DTCs are output.
Click here
Result | Proceed to |
---|---|
CAN DTCs are not output. | A |
CAN DTCs are output. | B |
B | ![]() | GO TO CAN COMMUNICATION SYSTEM* |
|
6. | CHECK FOR DTC* |
(a) Check for DTC.
Body Electrical > Navigation System > Trouble Codes Result | Proceed to |
---|---|
DTCs are output. | A |
DTCs are not output. | B |
B | ![]() | GO TO STEP 10 |
|
7. | DTC CLEAR* |
(a) Refer to DTC Check / Clear.
Body Electrical > Navigation System > Clear DTCsHINT:
The present DTCs may not indicate actual malfunctions depending on the vehicle operating conditions.
|
8. | RECHECK FOR DTC* |
(a) Refer to DTC Check / Clear.
Body Electrical > Navigation System > Trouble Codes Result | Proceed to |
---|---|
DTCs are output. | A |
DTCs are not output. | B |
HINT:
B | ![]() | GO TO STEP 10 |
|
9. | DIAGNOSTIC TROUBLE CODE CHART |
(a) Find the output DTC in Diagnostic Trouble Code Chart.
Click here
NEXT | ![]() | GO TO STEP 12 |
10. | 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 |
HINT:
If the symptom does not recur and no DTCs are output, attempt to reproduce the symptoms.
Click here
B | ![]() | GO TO STEP 12 |
|
11. | PERFORM TROUBLESHOOTING BASED ON PROBLEM SYMPTOM |
(a) Refer to Terminals of ECU.
Click here
|
12. | CHECK CIRCUIT |
(a) Adjust, repair or replace as necessary.
|
13. | RECHECK FOR DTC |
(a) After clearing DTCs, recheck for DTCs.
Body Electrical > Navigation System > Clear DTCs Body Electrical > Navigation System > Trouble Codes
|
14. | PERFORM CONFIRMATION TEST |
NEXT | ![]() | END |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Power Steering System: Drive Mode Select Switch Circuit
DESCRIPTION The electronic throttle and the EPS character change by the operation of the drive mode select switch (combination switch assembly). WIRING DIAGRAM PROCEDURE 1. CHECK THE PROBLEM SYMPTOMS (a) Check each symptom by checking the suspected areas in the table below. Result Pro ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Sfi System: High Pressure Fuel Pump Circuit Open (P123513)
DESCRIPTION The high-pressure direct injection fuel system consists of a spill control valve, check valve, fuel relief valve, fuel pressure sensor, fuel pump assembly (for high pressure side) and fuel injector assemblies (for direct injection). The spill control valve adjusts the return volume of th ...