CAUTION / NOTICE / HINT
HINT:
Click here
PROCEDURE
1. | VEHICLE BROUGHT TO WORKSHOP |
|
2. | CUSTOMER PROBLEM ANALYSIS |
HINT:
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. | PRE-CHECK |
(a) Measure the 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.
(b) Check the fuses and relays.
(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.
|
4. | CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check for CAN communication system DTCs.
Click here
Result | Proceed to |
---|---|
CAN DTCs are not output | A |
CAN DTCs are output | B |
B | ![]() | GO TO CAN COMMUNICATION SYSTEM |
|
5. | CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check for LIN communication system DTCs.
Click here
Result | Proceed to |
---|---|
LIN DTCs are not output | A |
LIN DTCs are output | B |
B | ![]() | GO TO LIN COMMUNICATION SYSTEM |
|
6. | CHECK FOR DTC (MULTIPLEX NETWORK DOOR ECU)* |
(a) Clear the DTCs.
Click here
(b) Recheck for DTCs.
Body Electrical > Back Door > Trouble Codes Result | Proceed to |
---|---|
DTCs are not output | A |
DTCs are output | B |
B | ![]() | GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
7. | 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 9 |
|
8. | OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Terminals of ECU
Click here
(b) Data List / Active Test
Click here
(c) Operation Check
Click here
(d) Inspection
|
9. | ADJUST, REPAIR OR REPLACE |
(a) Check if the multiplex network door ECU has been removed and installed or replaced, or if any of the connectors have been disconnected, the cable has been disconnected from the negative (-) battery terminal with the back door open or if any of the fuses in the power source circuit have been removed and installed or replaced.
Result | Proceed to |
---|---|
The multiplex network door ECU has been removed and installed or replaced, or if any of the connectors have been disconnected, the cable has been disconnected from the negative (-) battery terminal with the back door open or if any of the fuses in the power source circuit have been removed and installed or replaced. | A |
The multiplex network door ECU has not been removed and installed or replaced and none of the connectors have been disconnected, the cable has not been disconnected from the negative (-) battery terminal with the back door open and none of the fuses in the power source circuit have been removed and installed or replaced. | B |
B | ![]() | GO TO STEP 11 |
|
10. | INITIALIZE POWER BACK DOOR SYSTEM |
(a) Initialize the power back door system.
Click here
|
11. | CONFIRMATION TEST |
NEXT | ![]() | END |
Lexus RX (RX 350L, RX450h) 2016-2025 Owners Manual > Do-it-yourself
maintenance: Engine compartment
Washer fluid tank
Brake fluid reservoir
Engine oil level dipstick
Engine coolant reservoir
Power control unit coolant reservoir
Fuse boxes
Radiator
Power control unit coolant
radiator
Condenser
Electric cooling fans
Engine oil filler cap
Engine oil
With the engine at ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Rear Door Lock: Installation
INSTALLATION CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
PROCEDURE 1. PRECAUTION NOTICE: After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) ba ...