DESCRIPTION
The electronically controlled brake 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 brake booster with master cylinder assembly (skid control ECU) and clearance warning ECU assembly, DTC C164B is stored.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
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C164B | Communication Error From Clearance Sonar ECU to VSC | A communication error between the brake booster with master cylinder assembly (skid control ECU) and clearance warning ECU assembly is detected |
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CAUTION / NOTICE / HINT
NOTICE:
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HINT:
When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.
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PROCEDURE
1. | CHECK FOR DTC |
(a) Using the Techstream, check for DTCs according to the prompts on the screen.
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HINT:
After turning the power 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 FOR DTC (ELECTRONICALLY CONTROLLED BRAKE 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 ELECTRONICALLY CONTROLLED BRAKE SYSTEM |
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3. | REPLACE CLEARANCE WARNING ECU ASSEMBLY |
(a) Replace the clearance warning ECU assembly with a known good one.
Click here
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4. | CHECK FOR DTC |
(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 BOOSTER WITH MASTER CYLINDER ASSEMBLY (SKID CONTROL ECU) |
B | ![]() | END (CLEARANCE WARNING ECU ASSEMBLY IS DEFECTIVE) |