DESCRIPTION
On the SIGNAL CHECK screen, it is possible to check if the signals sent to the parking assist ECU are normal.
Click here
HINT:
Item | Signal Input Method | Detail | DTC Output when Abnormal Result is Displayed | Signal Receiver |
---|---|---|---|---|
CAN | CAN communication | CAN communication signal | DTC is output | Related ECUs |
SHIFT | Vehicle wire harness | Shift position switch signal | DTC is not output | Park/neutral position switch assembly |
CAMERA SW | Vehicle wire harness | Panoramic view monitor switch signal input state | DTC is not output | Panoramic view monitor switch (Integration control and panel assembly) |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
Click here
PROCEDURE
1. | CHECK DISPLAY CHECK MODE |
(a) Check which items display on the signal check screen. |
|
Result | Proceed to |
---|---|
"CAMERA SW" displays "CHK" (red) | A |
"CAN" displays "CHK" (red) | B |
"SHIFT" displays "CHK" (red) | C |
B | ![]() | GO TO CAN COMMUNICATION SYSTEM |
C | ![]() | GO TO STEP 4 |
|
2. | CHECK HARNESS AND CONNECTOR (PANORAMIC VIEW MONITOR SWITCH - PARKING ASSIST ECU AND BODY GROUND) |
(a) Disconnect the J84 panoramic view monitor switch connector.
(b) Disconnect the J159 parking assist ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J159-15 (BLSW) - J84-5 (D) | Always | Below 1 Ω |
J84-17 (E) - Body ground | Always | Below 1 Ω |
J159-15 (BLSW) or J84-5 (D) - Body ground | Always | 10 kΩ or higher |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. | INSPECT PANORAMIC VIEW MONITOR SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY) |
(a) Remove the panoramic view monitor switch (integration control and panel assembly).
Click here
(b) Inspect the panoramic view monitor switch (integration control and panel assembly).
Click here
OK | ![]() | REPLACE PARKING ASSIST ECU |
NG | ![]() | REPLACE PANORAMIC VIEW MONITOR SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY) |
4. | CHECK BACK-UP LIGHT |
(a) Check that the back-up light comes on.
OK:
The back-up light comes on.
NG | ![]() | GO TO LIGHTING SYSTEM (EXT) |
|
5. | CHECK HARNESS AND CONNECTOR (REVERSE SIGNAL) |
(a) Disconnect the J159 parking assist ECU connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
J159-14 (REV) - Body ground | Engine switch on (IG), shift position in R | 11 to 14 V |
J159-14 (REV) - Body ground | Engine switch on (IG), shift position not in R | Below 1 V |
OK | ![]() | REPLACE PARKING ASSIST ECU |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Power Mirror Control System (w/ Memory): Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. System Name See Procedure Lane Control System Pre-collision Sys ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Electric Parking Brake Actuator: On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT PARKING BRAKE ACTUATOR ASSEMBLY HINT: Using the Techstream to perform the Active Tests allows relays, VSVs and actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermitt ...