DESCRIPTION
The skid control ECU (brake actuator assembly) sends signals to the millimeter wave radar sensor assembly according to the brake control status. If the millimeter wave radar sensor assembly receives a VSC system malfunction signal from the skid control ECU (brake actuator assembly), it stores DTC C1A69.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
---|---|---|---|
C1A69 |
Brake Control Signal Mismatch |
While the ignition switch to ON, the millimeter wave radar sensor assembly receives a VSC system malfunction signal from the skid control ECU (brake actuator assembly) continuously for 1 second or more. |
|
CAUTION / NOTICE / HINT
NOTICE:
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PROCEDURE
1. |
CHECK FOR DTCs (VEHICLE STABILITY CONTROL SYSTEM) |
HINT:
Pre-collision system DTC C1A69 may be stored due to a malfunction in the VSC system. Therefore, it is necessary to check for and troubleshoot VSC system DTCs first.
(a) Check for DTCs.
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Chassis > ABS/VSC/TRAC/EPB > Trouble Codes
Result |
Proceed to |
---|---|
Vehicle stability control system DTCs are not output |
A |
Vehicle stability control system DTCs are output |
B |
B |
GO TO VEHICLE STABILITY CONTROL SYSTEM |
|
2. |
CHECK FOR DTCs (PRE-COLLISION SYSTEM) |
(a) Clear the DTCs.
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Body Electrical > Pre-Collision 2 > Clear DTCs(b) Make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
(c) Check for DTCs.
Click here
Body Electrical > Pre-Collision 2 > Trouble Codes
Result |
Proceed to |
---|---|
DTC C1A69 is not output |
A |
DTC C1A69 is output |
B |
A |
USE SIMULATION METHOD TO CHECK |
|
3. |
REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
(a) Replace the millimeter wave radar sensor assembly.
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(b) Adjust the millimeter wave radar sensor assembly.
Click here
|
4. |
CHECK FOR DTCs (PRE-COLLISION SYSTEM) |
(a) Clear the DTCs.
Click here
Body Electrical > Pre-Collision 2 > Clear DTCs(b) Make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
(c) Check for DTCs.
Click here
Body Electrical > Pre-Collision 2 > Trouble Codes
Result |
Proceed to |
---|---|
DTC C1A69 is not output |
A |
DTC C1A69 is output |
B |
A |
END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY WAS DEFECTIVE) |
B |
REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) |
Toyota CH-R Service Manual > Safety Connect System: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" column of the
table. Check each sy ...
Toyota CH-R Service Manual > Audio And Visual System(for Radio And Display Type): Data List / Active Test
DATA LIST / ACTIVE TEST
DATA LIST
NOTICE:
In the table below, the values listed under "Normal Condition" are reference
values. Do not depend solely on these reference values when deciding whether a part
is faulty or not.
HINT:
Using the Techstream to read the Data List allows the ...