DESCRIPTION
DTC C1A52 is stored when the ECM cannot recognize the millimeter wave radar sensor assembly.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
---|---|---|---|---|
C1A52 |
Radar Cruise Control Presence Determination Malfunction (Engine / HV) |
Approximately 17 seconds after the ignition switch is turned to ON, the ECM cannot recognize the millimeter wave radar sensor assembly for approximately 1.3 seconds or more. |
|
Does not come on |
CAUTION / NOTICE / HINT
NOTICE:
Click here
w/o Smart Key System: Click here
w/ Smart Key System: Click here
PROCEDURE
1. |
CHECK FOR DTC (RADAR CRUISE 2) |
(a) Clear the DTCs.
Click here
(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
Result |
Proceed to |
---|---|
DTC C1A52 is not output |
A |
DTC C1A52 is output |
B |
A | ![]() |
USE SIMULATION METHOD TO CHECK |
|
2. |
REPLACE ECM |
(a) Replace the ECM.
Click here
|
3. |
CHECK FOR DTC (RADAR CRUISE 2) |
(a) Clear the DTCs.
Click here
(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
Result |
Proceed to |
---|---|
DTC C1A52 is not output |
A |
DTC C1A52 is output |
B |
A | ![]() |
END (ECM WAS DEFECTIVE) |
B | ![]() |
REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
Open in Pump Motor Circuit (C1251)
DESCRIPTION
The motor relay (semiconductor relay) is built into the master cylinder solenoid
and drives the pump motor based on a signal from the skid control ECU (master cylinder
solenoid).
DTC No.
DTC Detecting Condition
Trouble Areas
C1251
...
Data List / Active Test
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any parts. This non-intrusive
inspection can be very useful because intermittent conditions or signals ...
Lost Communication with Front Panel LIN (B14B2)
DESCRIPTION
The air conditioning control assembly communicates with the air conditioning
amplifier assembly through the LIN communication system.
If the LIN communication system malfunctions, the air conditioning amplifier
assembly does not operate even if the air conditioning control assembly ...