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 |
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CAUTION / NOTICE / HINT
NOTICE:
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PROCEDURE
1. | CHECK DTC OUTPUT |
(a) Using the Techstream, check for DTCs according to the prompts on the screen.
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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.
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(c) Recheck for DTCs.
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HINT:
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Result | Proceed to |
---|---|
DTC C164B is output | A |
DTC C164B is not output | B |
B | ![]() | USE SIMULATION METHOD TO CHECK |
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2. | CHECK DTC OUTPUT (VEHICLE STABILITY CONTROL SYSTEM) |
(a) Using the Techstream, check for DTCs according to the prompts on the screen.
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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.
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|
4. | CHECK DTC OUTPUT |
(a) Using the Techstream, check for DTCs according to the prompts on the screen.
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(b) Clear the DTCs according to the screen on the Techstream.
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(c) Recheck for DTCs.
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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) |
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Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Intelligent Clearance Sonar System: System Description
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