DESCRIPTION
The skid control ECU (master cylinder solenoid)*1 or skid control ECU (brake actuator assembly)*2 sends signals to the millimeter wave radar sensor assembly according to the brake control status. If the millimeter wave radar sensor assembly receives a vehicle stability control system malfunction signal from the skid control ECU (master cylinder solenoid)*1 or skid control ECU (brake actuator assembly)*2, it will store DTC C1A64.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
---|---|---|---|
C1A69 |
Brake Control Signal Mismatch |
While the ignition switch is ON, the millimeter wave radar sensor assembly receives a vehicle stability control system malfunction signal from the skid control ECU (master cylinder solenoid)*1 or skid control ECU (brake actuator assembly)*2 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 vehicle stability control system. Therefore, it is necessary to check for and troubleshoot vehicle stability control system DTCs first.
(a) Check for DTCs.
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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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(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.
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Result |
Proceed to |
---|---|
DTC C1A69 is not output |
A |
DTC C1A69 is output |
B |
A |
USE SIMULATION METHOD TO CHECK |
B |
REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
Installation
INSTALLATION
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for both the RH and LH sides.
The procedure described below is for the LH side.
PROCEDURE
1. INSTALL FRONT SHOULDER BELT ANCHOR ADJUSTER ASSEMBLY
(a) Engage the guide to temporarily install the front ...
Millimeter Wave Radar Sensor Communication Stop Mode
DESCRIPTION
Detection Item
Symptom
Trouble Area
Millimeter Wave Radar Sensor Communication Stop Mode
Either Condition is met:
Communication stop for "Front Radar" is indicated on the "Communication
Bus C ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY (w/o Amplifier Box Speaker Assembly)
(a) Measure the resistance according to the value(s) in the table below.
Standard resistance:
Tester Connection
Condition
Specified Condition
1 ...