Dtc C1Aed Rear Sensor Communication Malfunction

Body Electrical. Camry. Acv40 Gsv40
Park Assist Monitoring. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DTC OUTPUT (C1AED)

CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - REAR RIGHT SENSOR)

CHECK HARNESS AND CONNECTOR (REAR RIGHT SENSOR - REAR RIGHT CENTER SENSOR)

CHECK HARNESS AND CONNECTOR (REAR RIGHT CENTER SENSOR - REAR LEFT CENTER SENSOR)

CHECK HARNESS AND CONNECTOR (REAR LEFT CENTER SENSOR - REAR LEFT SENSOR)

CHECK NO. 1 ULTRASONIC SENSOR (REAR RIGHT SENSOR)

CHECK NO. 1 ULTRASONIC SENSOR (REAR RIGHT CENTER SENSOR)

CHECK NO. 1 ULTRASONIC SENSOR (REAR LEFT CENTER SENSOR)

REPLACE NO. 1 ULTRASONIC SENSOR (REAR RIGHT SENSOR)

CHECK DTC OUTPUT

REPLACE NO. 1 ULTRASONIC SENSOR (REAR RIGHT CENTER SENSOR)

CHECK DTC OUTPUT

REPLACE NO. 1 ULTRASONIC SENSOR (REAR LEFT CENTER SENSOR)

CHECK DTC OUTPUT

REPLACE NO. 1 ULTRASONIC SENSOR (REAR LEFT SENSOR)

CHECK DTC OUTPUT

DTC C1AED Rear Sensor Communication Malfunction


DESCRIPTION

This DTC is stored when there is an open or short circuit in the communication line between the rear sensors and the ECU, or when there is a malfunction in a rear sensor.

DTC No.
DTC Detection Condition
Trouble Area
C1AED
An open or short circuit in the communication line between the rear sensors and ECU or a malfunction in a rear sensor during initialization mode after the ignition switch is turned to ON.
  1. Rear ultrasonic sensor circuit
  2. Clearance warning ECU

WIRING DIAGRAM


Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System. Dtc C1Aed Rear Sensor Communication Malfunction


INSPECTION PROCEDURE

1.CHECK DTC OUTPUT (C1AED)

  1. Check for DTCs (CAMRY_ACV40 RM000000VKU01FX.html).

  1. Clear the DTCs (CAMRY_ACV40 RM000000VKU01FX.html).

  1. Recheck for DTCs (CAMRY_ACV40 RM000000VKU01FX.html).

    Result:
    Result
    		Proceed to
    DTC C1AED is output
    		A
    No DTC is output
    		B


B
USE SIMULATION METHOD TO CHECK (CAMRY_ACV40 RM000000UZ301ZX.html)
A


2.CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - REAR RIGHT SENSOR)


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System. Dtc C1Aed Rear Sensor Communication Malfunction

  1. Disconnect the O28connector from the clearance warning ECU.

  1. Disconnect the k1 connector from the No. 1 ultrasonic sensor.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    O28-7 (BOR) - k1-1 (BI)
    		Always
    		Below 1 Ω
    O28-24 (SOR) - k1-3 (SI)
    O28-18 (E2) - k1-5 (EI)
    O28-7 (BOR) - Body ground
    		10 kΩ or higher
    O28-24 (SOR) - Body ground
    O28-18 (E2) - Body ground


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK HARNESS AND CONNECTOR (REAR RIGHT SENSOR - REAR RIGHT CENTER SENSOR)


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System. Dtc C1Aed Rear Sensor Communication Malfunction

  1. Disconnect the k1 and k2 connectors from the No. 1 ultrasonic sensors.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    k1-2 (BO) - k2-1 (BI)
    		Always
    		Below 1 Ω
    k1-4 (SO) - k2-3 (SI)
    k1-6 (EO) - k2-5 (EI)
    k1-2 (BO) - Body ground
    		10 kΩ or higher
    k1-4 (SO) - Body ground
    k1-6 (EO) - Body ground


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (REAR RIGHT CENTER SENSOR - REAR LEFT CENTER SENSOR)


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System. Dtc C1Aed Rear Sensor Communication Malfunction

  1. Disconnect the k2 and k3 connectors from the No. 1 ultrasonic sensors.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    k2-2 (BO) - k3-1 (BI)
    		Always
    		Below 1 Ω
    k2-4 (SO) - k3-3 (SI)
    k2-6 (EO) - k3-5 (EI)
    k2-2 (BO) - Body ground
    		10 kΩ or higher
    k2-4 (SO) - Body ground
    k2-6 (EO) - Body ground


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.CHECK HARNESS AND CONNECTOR (REAR LEFT CENTER SENSOR - REAR LEFT SENSOR)


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System. Dtc C1Aed Rear Sensor Communication Malfunction

  1. Disconnect the k3 and k4 connectors from the No. 1 ultrasonic sensors.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    k3-2 (BO) - k4-1 (BI)
    		Always
    		Below 1 Ω
    k3-4 (SO) - k4-3 (SI)
    k3-6 (EO) - k4-5 (EI)
    k3-2 (BO) - Body ground
    		10 kΩ or higher
    k3-4 (SO) - Body ground
    k3-6 (EO) - Body ground


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.CHECK NO. 1 ULTRASONIC SENSOR (REAR RIGHT SENSOR)

  1. Remove the No. 1 ultrasonic sensor (rear right sensor) (CAMRY_ACV40 RM000001PYF01PX.html).



    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System. Dtc C1Aed Rear Sensor Communication Malfunction

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 (BI) - 5 (EI)
    		Always
    		10 kΩ or higher
    1 (BI) - 2 (BO)
    		Always
    		10 kΩ or higher
    3 (SI) - 4 (SO)
    		Always
    		Below 1 Ω
    5 (EI) - 6 (EO)
    		Always
    		Below 1 Ω


NG
REPLACE NO. 1 ULTRASONIC SENSOR (REAR RIGHT SENSOR) (CAMRY_ACV40 RM000001PYF01PX.html)
OK


7.CHECK NO. 1 ULTRASONIC SENSOR (REAR RIGHT CENTER SENSOR)

  1. Remove the No. 1 ultrasonic sensor (rear right center sensor) (CAMRY_ACV40 RM000001PYF01PX.html).



    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System. Dtc C1Aed Rear Sensor Communication Malfunction

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 (BI) - 5 (EI)
    		Always
    		10 kΩ or higher
    1 (BI) - 2 (BO)
    		Always
    		10 kΩ or higher
    3 (SI) - 4 (SO)
    		Always
    		Below 1 Ω
    5 (EI) - 6 (EO)
    		Always
    		Below 1 Ω


NG
REPLACE NO. 1 ULTRASONIC SENSOR (REAR RIGHT CENTER SENSOR) (CAMRY_ACV40 RM000001PYF01PX.html)
OK


8.CHECK NO. 1 ULTRASONIC SENSOR (REAR LEFT CENTER SENSOR)

  1. Remove the No. 1 ultrasonic sensor (rear left center sensor) (CAMRY_ACV40 RM000001PYF01PX.html).



    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System. Dtc C1Aed Rear Sensor Communication Malfunction

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 (BI) - 5 (EI)
    		Always
    		10 kΩ or higher
    1 (BI) - 2 (BO)
    		Always
    		10 kΩ or higher
    3 (SI) - 4 (SO)
    		Always
    		Below 1 Ω
    5 (EI) - 6 (EO)
    		Always
    		Below 1 Ω


NG
REPLACE NO. 1 ULTRASONIC SENSOR (REAR LEFT CENTER SENSOR) (CAMRY_ACV40 RM000001PYF01PX.html)
OK


9.REPLACE NO. 1 ULTRASONIC SENSOR (REAR RIGHT SENSOR)


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System. Dtc C1Aed Rear Sensor Communication Malfunction

  1. Replace the No. 1 ultrasonic sensor (rear left sensor) with a normally functioning sensor (CAMRY_ACV40 RM000001PYF01PX.html).

    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.

NEXT


10.CHECK DTC OUTPUT

  1. Clear the DTCs (CAMRY_ACV40 RM000000VKU01FX.html).

  1. Check for DTCs (CAMRY_ACV40 RM000000VKU01FX.html).

    Result:
    Result
    		Proceed to
    DTC C1AED is output
    		A
    No DTC is output
    		B


B
END (REAR RIGHT SENSOR WAS DEFECTIVE)
A


11.REPLACE NO. 1 ULTRASONIC SENSOR (REAR RIGHT CENTER SENSOR)


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System. Dtc C1Aed Rear Sensor Communication Malfunction

  1. Replace the No. 1 ultrasonic sensor (rear left center sensor) with a normally functioning sensor (CAMRY_ACV40 RM000001PYF01PX.html).

    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.

NEXT


12.CHECK DTC OUTPUT

  1. Clear the DTCs (CAMRY_ACV40 RM000000VKU01FX.html).

  1. Check for DTCs (CAMRY_ACV40 RM000000VKU01FX.html).

    Result:
    Result
    		Proceed to
    DTC C1AED is output
    		A
    No DTC is output
    		B


B
END (REAR RIGHT CENTER SENSOR WAS DEFECTIVE)
A


13.REPLACE NO. 1 ULTRASONIC SENSOR (REAR LEFT CENTER SENSOR)


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System. Dtc C1Aed Rear Sensor Communication Malfunction

  1. Replace the No. 1 ultrasonic sensor (rear right center sensor) with a normally functioning sensor (CAMRY_ACV40 RM000001PYF01PX.html).

    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.

NEXT


14.CHECK DTC OUTPUT

  1. Clear the DTCs (CAMRY_ACV40 RM000000VKU01FX.html).

  1. Check for DTCs (CAMRY_ACV40 RM000000VKU01FX.html).

    Result:
    Result
    		Proceed to
    DTC C1AED is output
    		A
    No DTC is output
    		B


B
END (REAR LEFT CENTER SENSOR WAS DEFECTIVE)
A


15.REPLACE NO. 1 ULTRASONIC SENSOR (REAR LEFT SENSOR)


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System. Dtc C1Aed Rear Sensor Communication Malfunction

  1. Replace the No. 1 ultrasonic sensor (rear right sensor) with a normally functioning sensor (CAMRY_ACV40 RM000001PYF01PX.html).

    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.

NEXT


16.CHECK DTC OUTPUT

  1. Clear the DTCs (CAMRY_ACV40 RM000000VKU01FX.html).

  1. Check for DTCs (CAMRY_ACV40 RM000000VKU01FX.html).

    Result:
    Result
    		Proceed to
    DTC C1AED is output
    		A
    No DTC is output
    		B


B
END (REAR LEFT SENSOR WAS DEFECTIVE)
A

REPLACE CLEARANCE WARNING ECU (CAMRY_ACV40 RM000001PYJ00TX.html)