DESCRIPTION
This DTC is stored when there is an open or short circuit in the communication line between the front sensors and the ECU, or when there is a malfunction in a front sensor.
DTC No. | DTC Detection Condition | Trouble Area |
---|---|---|
C1AEC | An open or short circuit in the communication line between the front sensors and ECU or a malfunction in a front sensor during initialization mode after the power switch is turned on (IG). |
|
*1: w/o Parking Assist Monitor System
*2: w/ Parking Assist Monitor System
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
CHECK DTC OUTPUT (C1AEC)
Check for DTCs Click here.
Clear the DTCs Click here.
Recheck for DTCs Click here.
Result | ||||||||
---|---|---|---|---|---|---|---|---|
|
B |
CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - FRONT LEFT SENSOR) Click here |
C |
USE SIMULATION METHOD TO CHECK Click here |
A |
CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - FRONT LEFT SENSOR)
*1 | Front view of wire harness connector (to Clearance Warning ECU) |
*2 | Front view of wire harness connector (to No. 1 Ultrasonic Sensor (Front Left Sensor)) |
Disconnect the F52 connector from the clearance warning ECU.
Disconnect the A12 connector from the No. 1 ultrasonic sensor.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK HARNESS AND CONNECTOR (FRONT LEFT SENSOR - FRONT RIGHT SENSOR)
*1 | Front view of wire harness connector (to No. 1 Ultrasonic Sensor (Front Left Sensor)) |
*2 | Front view of wire harness connector (to No. 1 Ultrasonic Sensor (Front Right Sensor)) |
Disconnect the A12 and A13 connectors from the No. 1 ultrasonic sensors.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK NO. 1 ULTRASONIC SENSOR (FRONT LEFT SENSOR)
Remove the No. 1 ultrasonic sensor (front left sensor) Click here.
*1 | Component without harness connected (No. 1 Ultrasonic Sensor (Front Left Sensor)) |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
NG |
REPLACE NO. 1 ULTRASONIC SENSOR (FRONT LEFT SENSOR) Click here |
OK |
REPLACE NO. 1 ULTRASONIC SENSOR (FRONT LEFT SENSOR)
*1 | No. 1 Ultrasonic Sensor (Front Left Sensor) |
Replace the No. 1 ultrasonic sensor (front left sensor) with a normally functioning sensor Click here.
Tech Tips
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.
NEXT |
CHECK DTC OUTPUT (C1AEC)
Clear the DTCs Click here.
Check for DTCs Click here.
Result | ||||||
---|---|---|---|---|---|---|
|
B |
END (FRONT LEFT SENSOR WAS DEFECTIVE) |
A |
REPLACE NO. 1 ULTRASONIC SENSOR (FRONT RIGHT SENSOR)
*1 | No. 1 Ultrasonic Sensor (Front Right Sensor) |
Replace the No. 1 ultrasonic sensor (front right sensor) with a normally functioning sensor Click here.
Tech Tips
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.
NEXT |
CHECK DTC OUTPUT (C1AEC)
Clear the DTCs Click here.
Check for DTCs Click here.
Result | ||||||
---|---|---|---|---|---|---|
|
B |
END (FRONT RIGHT SENSOR WAS DEFECTIVE) |
A |
REPLACE CLEARANCE WARNING ECU Click here
CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - FRONT LEFT SENSOR)
*1 | Front view of wire harness connector (to Parking Assist ECU) |
*2 | Front view of wire harness connector (to No. 1 Ultrasonic Sensor (Front Left Sensor)) |
Disconnect the F55 connector from the parking assist ECU.
Disconnect the A12 connector from the No. 1 ultrasonic sensor.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK HARNESS AND CONNECTOR (FRONT LEFT SENSOR - FRONT RIGHT SENSOR)
*1 | Front view of wire harness connector (to No. 1 Ultrasonic Sensor (Front Left Sensor)) |
*2 | Front view of wire harness connector (to No. 1 Ultrasonic Sensor (Front Right Sensor)) |
Disconnect the A12 and A13 connectors from the No. 1 ultrasonic sensors.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK NO. 1 ULTRASONIC SENSOR (FRONT LEFT SENSOR)
Remove the No. 1 ultrasonic sensor (front left sensor) Click here.
*1 | Component without harness connected (No. 1 Ultrasonic Sensor (Front Left Sensor)) |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
NG |
REPLACE NO. 1 ULTRASONIC SENSOR (FRONT LEFT SENSOR) Click here |
OK |
REPLACE NO. 1 ULTRASONIC SENSOR (FRONT LEFT SENSOR)
*1 | No. 1 Ultrasonic Sensor (Front Left Sensor) |
Replace the No. 1 ultrasonic sensor (front left sensor) with a normally functioning sensor Click here.
Tech Tips
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.
NEXT |
CHECK DTC OUTPUT (C1AEC)
Clear the DTCs Click here.
Check for DTCs Click here.
Result | ||||||
---|---|---|---|---|---|---|
|
B |
END (FRONT LEFT SENSOR WAS DEFECTIVE) |
A |
REPLACE NO. 1 ULTRASONIC SENSOR (FRONT RIGHT SENSOR)
*1 | No. 1 Ultrasonic Sensor (Front Right Sensor) |
Replace the No. 1 ultrasonic sensor (front right sensor) with a normally functioning sensor Click here.
Tech Tips
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.
NEXT |
CHECK DTC OUTPUT (C1AEC)
Clear the DTCs Click here.
Check for DTCs Click here.
Result | ||||||
---|---|---|---|---|---|---|
|
B |
END (FRONT RIGHT SENSOR WAS DEFECTIVE) |
A |
REPLACE PARKING ASSIST ECU Click here