| Last Modified: 05-08-2025 | 6.11:8.1.0 | Doc ID: RM100000002GAJ6 |
| Model Year Start: 2024 | Model: RAV4 HV | Prod Date Range: [10/2023 - ] |
| Title: PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for HV Model with Parking Support Brake System): C1AE187; Ultrasonic Sensor (Front Left Corner) Missing Message; 2024 - 2025 MY RAV4 HV [10/2023 - ] | ||
|
DTC |
C1AE187 |
Ultrasonic Sensor (Front Left Corner) Missing Message |
DESCRIPTION
This DTC is output when an open circuit or short occurs in the communication line between a front corner ultrasonic sensor (FL sensor) and the clearance warning ECU assembly, or when a malfunction occurs in a front corner ultrasonic sensor (FL sensor) on the front.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C1AE187 |
Ultrasonic Sensor (Front Left Corner) Missing Message |
Front corner ultrasonic sensor (FL sensor) lost communication |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
Perform registration after replacing or removing and installing the ultrasonic sensor or clearance warning ECU assembly.
Click here
![2019 - 2025 MY RAV4 HV [02/2019 - ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for HV Model with Parking Support Brake System): CALIBRATION](/t3Portal/stylegraphics/info.gif)
-
If a DTC is detected again after the repair, turn the power switch on (IG) and turn the intuitive parking assist system on, and then clear the DTC.
Click here
PROCEDURE
|
1. |
VEHICLE CONDITION AND WORK DETAILS CHECK |
(a) Check the vehicle condition and work details.
|
Result |
Proceed to |
|---|---|
|
The clearance warning ECU assembly or ultrasonic sensor has not been replaced |
A |
|
The clearance warning ECU assembly or ultrasonic sensor has been replaced |
B |
| B |
|
|
|
2. |
CHECK CONNECTOR CONNECTION CONDITION (ULTRASONIC SENSOR) |
(a) Check that the connector is properly connected to the front corner ultrasonic sensor and front center ultrasonic sensor.
|
|
3. |
CLEAR DTC |
(a) Clear the DTCs.
Body Electrical > Clearance Warning > Clear DTCs
|
|
4. |
CHECK FOR DTC |
(a) Check for DTCs.
Body Electrical > Clearance Warning > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
C1AE187 is not output |
A |
|
C1AE187 is output |
B |
| A |
|
END (CONNECTOR CONNECTION MALFUNCTION) |
|
|
5. |
CHECK CONNECTOR CONNECTION CONDITION (CLEARANCE WARNING ECU ASSEMBLY) |
(a) Check that the connector is properly connected to the clearance warning ECU assembly.
|
|
6. |
CLEAR DTC |
(a) Clear the DTCs.
Body Electrical > Clearance Warning > Clear DTCs
|
|
7. |
CHECK FOR DTC |
(a) Recheck for DTCs.
Click here
Body Electrical > Clearance Warning > Trouble Codes
DTC OUTPUT COMBINATION:
|
Symptoms |
DTC Detection |
|||
|---|---|---|---|---|
|
C1AE187 |
C1AE287 |
C1AE387 |
C1AE487 |
|
|
Symptom 1 |
Not output |
Not output |
Not output |
Not output |
|
Symptom 2 |
Not output |
Not output |
Not output |
Output |
|
Symptom 3 |
Not output |
Not output |
Output |
Output |
|
Symptom 4 |
Not output |
Output |
Output |
Output |
|
Symptom 5 |
Output |
Output |
Output |
Output |
|
Result |
Proceed to |
|---|---|
|
Listed under symptom 1 in combination table |
A |
|
Listed under symptom 2 in combination table |
B |
|
Listed under symptom 3 in combination table |
C |
|
Listed under symptom 4 in combination table |
D |
|
Listed under symptom 5 in combination table |
E |
|
Only C1AE187 is output |
F |
| A |
|
| B |
|
| C |
|
| D |
|
| F |
|
|
|
8. |
CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - FRONT CORNER ULTRASONIC SENSOR [FL SENSOR]) |
- *1: for TMMC Made
- *2: for TMC Made
(a) Disconnect the G25*1 or H4*2 clearance warning ECU assembly connector.
(b) Disconnect the B5*1 or B18*2 front corner ultrasonic sensor (FL sensor) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for TMMC Made:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G25-2 (BOF) - B5-4 (BI) |
Always |
Below 1 Ω |
|
G25-3 (SOF) - B5-5 (SI) |
Always |
Below 1 Ω |
|
G25-4 (E5) - B5-6 (EI) |
Always |
Below 1 Ω |
|
G25-2 (BOF) or B5-4 (BI) - Body ground |
Always |
10 kΩ or higher |
|
G25-3 (SOF) or B5-5 (SI) - Body ground |
Always |
10 kΩ or higher |
|
G25-4 (E5) or B5-6 (EI) - Body ground |
Always |
10 kΩ or higher |
for TMC Made:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
H4-2 (BOF) - B18-4 (BI) |
Always |
Below 1 Ω |
|
H4-4 (SOF) - B18-5 (SI) |
Always |
Below 1 Ω |
|
H4-3 (E5) - B18-6 (EI) |
Always |
Below 1 Ω |
|
H4-2 (BOF) or B18-4 (BI) - Body ground |
Always |
10 kΩ or higher |
|
H4-4 (SOF) or B18-5 (SI) - Body ground |
Always |
10 kΩ or higher |
|
H4-3 (E5) or B18-6 (EI) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
9. |
REPLACE FRONT CORNER ULTRASONIC SENSOR (FL SENSOR) |
(a) Replace the front corner ultrasonic sensor (FL sensor) with a known good one.
Click here
HINT:
All of the sensors are interchangeable. To confirm whether a sensor is functioning normally, switch it with a known good sensor from the other end of the vehicle.
|
|
10. |
CHECK FOR DTC |
(a) Check for DTCs.
Click here
Body Electrical > Clearance Warning > Trouble Codes
(b) Clear the DTCs.
Click here
Body Electrical > Clearance Warning > Clear DTCs
(c) Recheck for DTCs.
Click here
Body Electrical > Clearance Warning > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTC C1AE187 is not output |
A |
|
DTC C1AE187 is output |
B |
| A |
|
END (FRONT CORNER ULTRASONIC SENSOR [FL SENSOR] WAS DEFECTIVE) |
| B |
|
|
|