Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000002GAJQ
Model Year Start: 2024 Model: RAV4 Prod Date Range: [10/2023 -           ]
Title: PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): C1AE387; Ultrasonic Sensor (Front Right Center) Missing Message; 2024 MY RAV4 [10/2023 -        ]

DTC

C1AE387

Ultrasonic Sensor (Front Right Center) Missing Message

DESCRIPTION

This DTC is output when an open circuit or short occurs in the communication line between a front center ultrasonic sensor (FRC sensor) and the front center ultrasonic sensor (FLC sensor), or when a malfunction occurs in a front center ultrasonic sensor (FRC sensor) on the front.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AE387

Ultrasonic Sensor (Front Right Center) Missing Message

Front center ultrasonic sensor (FRC sensor) lost communication

  • Front center ultrasonic sensor (FRC sensor)
  • Harness or connector
  • Clearance warning ECU assembly

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 - 2024 MY RAV4 [11/2018 -        ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): CALIBRATION

  • If a DTC is detected again after the repair, turn the engine switch on (IG) and turn the intuitive parking assist system on, and then clear the DTC.

    Click here 2019 - 2024 MY RAV4 [11/2018 -        ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): DTC CHECK / CLEAR

  • If C1AE296 is output at the same time, check C1AE296 first.

    Click here 2019 - 2024 MY RAV4 [11/2018 -        ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): C1AE296; Ultrasonic Sensor (Front Left Center) Component Internal Failure

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

GO TO CALIBRATION

A

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.

NEXT

3.

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Clearance Warning > Clear DTCs

NEXT

4.

CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Clearance Warning > Trouble Codes

Result

Proceed to

C1AE387 is not output

A

C1AE387 is output

B

A

END (CONNECTOR CONNECTION MALFUNCTION)

B

5.

CHECK CONNECTOR CONNECTION CONDITION (CLEARANCE WARNING ECU ASSEMBLY)

(a) Check that the connector is properly connected to the clearance warning ECU assembly.

NEXT

6.

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Clearance Warning > Clear DTCs

NEXT

7.

CHECK FOR DTC

(a) Recheck for DTCs.

Click here 2019 - 2024 MY RAV4 [11/2018 -        ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): DTC CHECK / CLEAR

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 C1AE387 is output

F

A

USE SIMULATION METHOD TO CHECK

B

GO TO DTC (C1AE487)

D

GO TO DTC (C1AE287)

E

GO TO DTC (C1AE187)

F

GO TO STEP 9

C

8.

CHECK HARNESS AND CONNECTOR (FRONT CENTER ULTRASONIC SENSOR [FLC SENSOR] - FRONT CENTER ULTRASONIC SENSOR [FRC SENSOR])

  • *1: for TMMC Made
  • *2: for TMC Made

(a) Disconnect the B4*1 or B21*2 front center ultrasonic sensor (FLC sensor) connector.

(b) Disconnect the B3*1 or B20*2 front center ultrasonic sensor (FRC 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

B4-1 (BO) - B3-4 (BI)

Always

Below 1 Ω

B4-2 (SO) - B3-5 (SI)

Always

Below 1 Ω

B4-3 (EO) - B3-6 (EI)

Always

Below 1 Ω

B4-1 (BO) or B3-4 (BI) - Body ground

Always

10 kΩ or higher

B4-2 (SO) or B3-5 (SI) - Body ground

Always

10 kΩ or higher

B4-3 (EO) or B3-6 (EI) - Body ground

Always

10 kΩ or higher

for TMC Made:

Tester Connection

Condition

Specified Condition

B21-1 (BO) - B20-4 (BI)

Always

Below 1 Ω

B21-2 (SO) - B20-5 (SI)

Always

Below 1 Ω

B21-3 (EO) - B20-6 (EI)

Always

Below 1 Ω

B21-1 (BO) or B20-4 (BI) - Body ground

Always

10 kΩ or higher

B21-2 (SO) or B20-5 (SI) - Body ground

Always

10 kΩ or higher

B21-3 (EO) or B20-6 (EI) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

9.

REPLACE FRONT CENTER ULTRASONIC SENSOR (FRC SENSOR)

(a) Replace the front center ultrasonic sensor (FRC sensor) with a known good one.

Click here 2024 MY RAV4 RAV4 HV [10/2023 -        ]; PARK ASSIST / MONITORING: ULTRASONIC SENSOR (for Front): REMOVAL

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 FOR DTC

(a) Check for DTCs.

Click here 2019 - 2024 MY RAV4 [11/2018 -        ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): DTC CHECK / CLEAR

Body Electrical > Clearance Warning > Trouble Codes

(b) Clear the DTCs.

Click here 2019 - 2024 MY RAV4 [11/2018 -        ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): DTC CHECK / CLEAR

Body Electrical > Clearance Warning > Clear DTCs

(c) Recheck for DTCs.

Click here 2019 - 2024 MY RAV4 [11/2018 -        ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): DTC CHECK / CLEAR

Body Electrical > Clearance Warning > Trouble Codes

Result

Proceed to

DTC C1AE387 is not output

A

DTC C1AE387 is output

B

A

END (FRONT CENTER ULTRASONIC SENSOR [FRC SENSOR] WAS DEFECTIVE)

B

REPLACE CLEARANCE WARNING ECU ASSEMBLY