CAUTION / NOTICE / HINT
HINT:
PROCEDURE
1. | VEHICLE BROUGHT TO WORKSHOP |
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2. | CUSTOMER PROBLEM ANALYSIS |
(a) Interview the customer and confirm the problem.
Click here
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3. | CHECK BATTERY VOLTAGE |
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
HINT:
A simple method to determine whether the battery is depleted is to operate the horn.
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4. | CHECK DTC* |
(a) Check for DTCs and make a note of any codes that are output.
Click here
Body Electrical > Smart Access > Trouble CodesHINT:
When DTCs indicating CAN and/or LIN communication system malfunctions are output, repair the CAN and/or LIN communication systems before performing diagnosis.
for CAN communication system: Click here
for LIN communication system: Click here
Result | Proceed to |
---|---|
DTCs are not output. (Problem symptom cannot be confirmed or reproduced.) | A |
DTCs are not output. (Problem symptom can be confirmed or reproduced.) | B |
Steering lock system DTCs are output. | C |
HINT:
Click here
B | GO TO STEP 6 |
C | GO TO STEP 8 |
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5. | SYMPTOM SIMULATION |
(a) Proceed to How to Proceed with Troubleshooting.
Click here
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6. | PROBLEM SYMPTOMS TABLE |
(a) Proceed 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 8 |
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7. | OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Proceed to Data List / Active Test.
Click here
(b) Proceed to Terminals of ECU.
Click here
NEXT | GO TO STEP 9 |
8. | CIRCUIT INSPECTION* |
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9. | REPAIR OR REPLACE |
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10. | CHECK DTC AGAIN* |
(a) Clear the DTCs.
Click here
Body Electrical > Smart Access > Clear DTCs(b) Check for DTCs and make a note of any codes that are output.
Click here
Body Electrical > Smart Access > Trouble CodesHINT:
Perform the DTC output confirmation operation.
Result | Proceed to |
---|---|
DTCs are not output. | A |
Steering lock system DTCs are output. | B |
A | END |
B | GO TO DIAGNOSTIC TROUBLE CODE CHART |
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Spiral Cable: Installation
INSTALLATION PROCEDURE 1. INSPECT SPIRAL CABLE SUB-ASSEMBLY NOTICE: If the steering sensor is installed to a misaligned spiral cable sub-assembly, DTCs for an abnormal steering sensor value such as DTC B1801, C1231 and C1433 will be stored and it will be impossible to correct the problem. If this ha ...
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Lighting System (w/ Automatic Headlight Beam Level Control System): Lost Communication With Headlamp Control Module "B" (U0242)
DESCRIPTION for Multiple Beam Headlight:
The No. 1 headlight ECU sub-assembly LH communicates with the No. 1 headlight ECU sub-assembly RH via CAN communication. If communication between the No. 1 headlight ECU sub-assembly LH and No. 1 headlight ECU sub-assembly RH stops, the No. 1 headlight ECU ...