CAUTION / NOTICE / HINT
HINT:
PROCEDURE
1. | VEHICLE BROUGHT TO WORKSHOP |
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2. | INSPECT BATTERY VOLTAGE |
(a) Turn the engine switch off.
(b) Measure the voltage of the battery.
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.
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3. | CHECK DTC AND FREEZE FRAME DATA* |
HINT:
Refer to DTC Check / Clear.
Click here
|
4. | PROBLEM SYMPTOM CONFIRMATION |
Result | Proceed to |
---|---|
Symptom does not occur. | A |
Symptom occurs. | B |
B | ![]() | GO TO STEP 6 |
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5. | SYMPTOM SIMULATION |
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6. | CHECK CAN COMMUNICATION SYSTEM* |
(a) Check for DTCs.
Click here
Result | Proceed to |
---|---|
CAN communication system DTCs are not output. | A |
CAN communication system DTCs are output. | B |
HINT:
B | ![]() | PROCEED TO CAN COMMUNICATION SYSTEM |
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7. | CHECK FOR DTC* |
(a) Check for DTCs.
Click here
HINT:
Refer to Diagnostic Trouble Code Chart when any DTCs are output.
Click here
Result | Proceed to |
---|---|
DTCs are not output. | A |
DTCs are output. | B |
B | ![]() | GO TO STEP 10 |
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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 STEP 10 |
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9. | OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Refer to Terminals of ECU.
Click here
(b) Refer to Data List / Active Test.
Click here
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10. | REPAIR OR REPLACE |
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11. | CONFIRMATION TEST |
NEXT | ![]() | END |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Sfi System: Definition Of Terms
DEFINITION OF TERMS Term Definition Monitor Description Description of what the ECM monitors and how it detects malfunctions (monitoring purpose and details). Related DTCs Group of diagnostic trouble codes that are output by the ECM based on the same malfunction detection logic. ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Stop Light Switch: On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT STOP LIGHT SWITCH ASSEMBLY (a) Disconnect the A55 stop light switch assembly connector. *a Front view of wire harness connector (to Stop Light Switch Assembly) (b) Measure the voltage and resistance on the wire harness side connec ...