Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Communication Error From Clearance Sonar ECU to VSC (C164B)
DESCRIPTION
The vehicle stability control system receives intelligent clearance sonar system information from the clearance warning ECU assembly via CAN communication. When it is determined that there is a communication error between the skid control ECU and clearance warning ECU assembly, DTC C164B is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C164B | Communication Error From Clearance Sonar ECU to VSC | A communication error between the skid control ECU and clearance warning ECU assembly is detected |
|
CAUTION / NOTICE / HINT
NOTICE:
-
After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.
Click here
.gif)
-
After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).
Click here
PROCEDURE
| 1. | CHECK DTC OUTPUT |
(a) Using the Techstream, check for DTCs according to the prompts on the screen.
Click here
HINT:
After turning the engine switch from off to on (IG), wait 4 seconds or more before checking for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes(b) Clear the DTCs according to the screen on the Techstream.
Click here
(c) Recheck for DTCs.
Click here
HINT:
- If DTC C164B is not output after clearing the DTCs, an intermittent communication error between the clearance warning ECU assembly and skid control ECU is suspected.
-
If DTC C164B is output frequently, duplicate the conditions that cause the problem symptoms and perform the inspection again, even though the DTC was not output when rechecking for DTCs.
Click here
| Result | Proceed to |
|---|---|
| DTC C164B is output | A |
| DTC C164B is not output | B |
| B |  | USE SIMULATION METHOD TO CHECK |
|
| 2. | CHECK DTC OUTPUT (VEHICLE STABILITY CONTROL SYSTEM) |
(a) Using the Techstream, check for DTCs according to the prompts on the screen.
Click here
| Result | Proceed to |
|---|---|
| DTC is not output | A |
| DTC is output | B |
| B | | GO TO VEHICLE STABILITY CONTROL SYSTEM |
|
| 3. | REPLACE CLEARANCE WARNING ECU ASSEMBLY |
(a) Replace the clearance warning ECU assembly with a known good one.
Click here
|
| 4. | CHECK DTC OUTPUT |
(a) Using the Techstream, check for DTCs according to the prompts on the screen.
Click here
(b) Clear the DTCs according to the screen on the Techstream.
Click here
(c) Recheck for DTCs.
Click here
| Result | Proceed to |
|---|---|
| DTC C164B is output | A |
| DTC C164B is not output | B |
| A | | REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) |
| B | | END (CLEARANCE WARNING ECU ASSEMBLY DEFECTIVE) |
Steering Angle Sensor Failure (C1626)
DESCRIPTION This DTC is stored if the clearance warning ECU assembly receives a signal via CAN communication from the steering sensor that indicates an internal malfunction. DTC No. Detection Ite ...
G Sensor Failure (C1647)
DESCRIPTION The clearance warning sonar ECU assembly communicates with the airbag sensor assembly*1 or yaw rate and acceleration sensor*2 via CAN communication, and if it is determined that the airbag ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Blind Spot Monitor System: Master Module Horizontal Axis Misalignment (C1AC1)
DESCRIPTION This DTC is stored when the angle of the blind spot monitor sensor LH deviates more than the allowable range from the horizontal axis. HINT:
If a drum tester such as a speedometer tester, brake/speedometer combination tester or chassis dynamometer is used with the blind spot monitor s ...
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Camshaft Oil Control Solenoid (for Bank 2): Inspection
INSPECTION PROCEDURE 1. INSPECT CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY HINT: Use the same procedure for the intake side and exhaust side. (a) Check the resistance. (1) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Conditio ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
0.0171