Toyota Corolla Cross: Ultrasonic Sensor (Rear Left Corner) Missing Message (C1AE687)
DESCRIPTION
This DTC is output when an open circuit or short occurs in the communication line between a rear corner ultrasonic sensor (RL sensor) and the clearance warning ECU assembly, or when a malfunction occurs in a rear corner ultrasonic sensor (RL sensor) on the rear.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C1AE687 |
Ultrasonic Sensor (Rear Left Corner) Missing Message |
Rear corner ultrasonic sensor (RL sensor) lost communication |
|
WIRING DIAGRAM
for HEV Model
for Gasoline Model
CAUTION / NOTICE / HINT
NOTICE:
- Perform registration after replacing or removing and installing the
ultrasonic sensor or clearance warning ECU assembly.
Click here
.gif)
- If a DTC is detected again after the repair, turn the ignition switch
to ON 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 | .gif)
|
GO TO CALIBRATION |
|
.gif)
|
2. |
CHECK CONNECTOR CONNECTION CONDITION (ULTRASONIC SENSOR) |
(a) Check that the connector is properly connected to the rear corner ultrasonic sensor and rear 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 |
|---|---|
|
DTCs are not output |
A |
|
C1AE687 is output |
B |
|
None of the above conditions are met |
C |
| A |
|
END (CONNECTOR CONNECTION MALFUNCTION) |
| C |
|
GO TO DTC CHART |
|
|
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) Check for DTCs.
Body Electrical > Clearance Warning > Trouble Codes|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
C1AE687, C1AE787, C1AE887 and C1AE987 are output |
B |
|
C1AE787, C1AE887 and C1AE987 are output |
C |
|
C1AE887 and C1AE987 are output |
D |
|
C1AE987 is output |
E |
|
Only C1AE687 is output |
F |
|
None of the above conditions are met |
G |
| A |
|
USE SIMULATION METHOD TO CHECK |
| C |
|
GO TO DTC (C1AE787) |
| D |
|
GO TO DTC (C1AE887) |
| E |
|
GO TO DTC (C1AE987) |
| F |
|
GO TO STEP 10 |
| G |
|
GO TO DTC CHART |
|
|
8. |
CONFIRM MODEL |
(a) Choose the model to be inspected.
|
Result |
Proceed to |
|---|---|
|
for HEV Model |
A |
|
for Gasoline Model |
B |
| B |
|
GO TO STEP 13 |
|
|
9. |
CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - REAR CORNER ULTRASONIC SENSOR [RL SENSOR]) |
(a) Disconnect the I24 clearance warning ECU assembly connector.
(b) Disconnect the V4 rear corner ultrasonic sensor (RL sensor) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I24-19 (BOR) - V4-4 (BI) |
Always |
Below 1 Ω |
|
I24-21 (SOR) - V4-5 (SI) |
Always |
Below 1 Ω |
|
I24-20 (E1) - V4-6 (EI) |
Always |
Below 1 Ω |
|
I24-19 (BOR) or V4-4 (BI) - Body ground |
Always |
10 kΩ or higher |
|
I24-21 (SOR) or V4-5 (SI) - Body ground |
Always |
10 kΩ or higher |
|
I24-20 (E1) or V4-6 (EI) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
10. |
REPLACE REAR CORNER ULTRASONIC SENSOR (RL SENSOR) |
(a) Replace the rear corner ultrasonic sensor (RL sensor) with a known good one.
HINT:
- Click here
- 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.
|
|
11. |
CLEAR DTC |
(a) Clear the DTCs.
Body Electrical > Clearance Warning > Clear DTCs
|
|
12. |
CHECK FOR DTC |
(a) Check for DTCs.
Body Electrical > Clearance Warning > Trouble Codes|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
C1AE687 is output |
B |
|
None of the above conditions are met |
C |
| A |
|
END (REAR CORNER ULTRASONIC SENSOR [RL SENSOR] WAS DEFECTIVE) |
| B |
|
REPLACE CLEARANCE WARNING ECU ASSEMBLY |
| C |
|
GO TO DTC CHART |
|
13. |
CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - REAR CORNER ULTRASONIC SENSOR [RL SENSOR]) |
(a) Disconnect the I24 clearance warning ECU assembly connector.
(b) Disconnect the R18 rear corner ultrasonic sensor (RL sensor) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I24-19 (BOR) - R18-4 (BI) |
Always |
Below 1 Ω |
|
I24-21 (SOR) - R18-5 (SI) |
Always |
Below 1 Ω |
|
I24-20 (E1) - R18-6 (EI) |
Always |
Below 1 Ω |
|
I24-19 (BOR) or R18-4 (BI) - Body ground |
Always |
10 kΩ or higher |
|
I24-21 (SOR) or R18-5 (SI) - Body ground |
Always |
10 kΩ or higher |
|
I24-20 (E1) or R18-6 (EI) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
GO TO STEP 10 |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
READ NEXT:
Ultrasonic Sensor (Rear Left Corner) Component Internal Failure (C1AE696)
DESCRIPTION
The rear corner ultrasonic sensor (RL sensor) is installed on
the rear bumper. The clearance warning ECU assembly detects obstacles based on signals
it receives from the rear corner u
Ultrasonic Sensor (Rear Left Center) Missing Message (C1AE787)
DESCRIPTION
This DTC is output when an open circuit or short occurs in the
communication line between a rear center ultrasonic sensor (RLC sensor) and the
rear corner ultrasonic sensor (RL sensor
Ultrasonic Sensor (Rear Left Center) Component Internal Failure (C1AE796)
DESCRIPTION
The rear center ultrasonic sensor (RLC sensor) is installed
on the rear bumper. The clearance warning ECU assembly detects obstacles based on
signals it receives from the rear center
SEE MORE:
Left Rear Wheel Speed Sensor Circuit Voltage Out of Range (C050C1C)
DESCRIPTION
Refer to DTC C050C12
Click here
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
MIL
DTC Output from
Note
C050C1C
Left Rear Wheel Speed Sensor Circuit Voltage Out of
Servo Motor LIN Communication Bus off (B142A88)
DESCRIPTION The air conditioning harness assembly connects the air conditioning amplifier assembly and the servo motors. The air conditioning amplifier assembly supplies power and sends operation instructions to each servo motor through the air conditioning harness assembly. Each servo motor sends d
