RM3660EC _56 Audio / Visual / Telematics _080754 PARK ASSIST / MONITORING _0470653 TOYOTA PARKING ASSIST-SENSOR SYSTEM(w/ Parking Support Brake System) C

PARK ASSIST / MONITORING TOYOTA PARKING ASSIST-SENSOR SYSTEM(w/ Parking Support Brake System) C1AE287 Ultrasonic Sensor (Front Left Center) Missing Message

DESCRIPTION

This DTC is stored when an open circuit or short occurs in the communication line between the front center ultrasonic sensor LH and the front center ultrasonic sensor RH, or when a malfunction occurs in the front center ultrasonic sensor LH.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C1AE287	Ultrasonic Sensor (Front Left Center) Missing Message	Front center ultrasonic sensor LH lost communication	· Front center ultrasonic sensor LH · Harness or connector · Clearance warning ECU assembly

WIRING DIAGRAM

3.844,0.958 4.083,1.208 0.24,0.25 10 false BI 3.854,1.354 4.042,1.542 0.188,0.188 10 false EI 3.844,0.552 4.073,0.781 0.229,0.229 10 false SI 3.156,0.563 3.458,0.781 0.302,0.219 10 false SO 3.156,1.354 3.458,1.583 0.302,0.229 10 false EO 3.156,0.969 3.49,1.229 0.333,0.26 10 false BO 1.313,0.969 1.583,1.188 0.271,0.219 10 false BI 1.323,1.365 1.594,1.604 0.271,0.24 10 false EI 1.302,0.563 1.583,0.813 0.281,0.25 10 false SI 1.25,3.49 1.51,3.74 0.26,0.25 10 false SO 1.25,2.698 1.51,2.917 0.26,0.219 10 false EO 1.25,3.083 1.552,3.396 0.302,0.313 10 false BO 5.698,3.5 5.979,3.74 0.281,0.24 10 false SI 5.698,3.104 5.979,3.354 0.281,0.25 10 false BI 5.698,2.677 6.031,2.958 0.333,0.281 10 false EI 4.094,0.427 4.25,0.583 0.156,0.156 10 false 5 2.948,0.823 3.052,0.979 0.104,0.156 10 false 1 2.948,0.427 3.052,0.583 0.104,0.156 10 false 2 4.094,1.24 4.25,1.396 0.156,0.156 10 false 6 4.094,0.823 4.25,0.979 0.156,0.156 10 false 4 2.958,1.229 3.063,1.385 0.104,0.156 10 false 3 1.573,0.427 1.729,0.583 0.156,0.156 10 false 5 1.573,2.969 1.729,3.125 0.156,0.156 10 false 1 1.583,3.375 1.74,3.531 0.156,0.156 10 false 2 1.573,1.24 1.76,1.406 0.188,0.167 10 false 6 1.573,0.823 1.76,0.99 0.188,0.167 10 false 4 1.573,2.583 1.729,2.74 0.156,0.156 10 false 3 5.49,3.365 5.594,3.521 0.104,0.156 10 false 5 5.479,2.583 5.625,2.76 0.146,0.177 10 false 6 5.479,2.969 5.583,3.125 0.104,0.156 10 false 4 3.156,3.5 3.385,3.74 0.229,0.24 10 false SI 3.167,2.698 3.396,2.948 0.229,0.25 10 false EI 3.156,3.104 3.406,3.344 0.25,0.24 10 false BI 3.792,2.698 4.094,2.958 0.302,0.26 10 false EO 3.792,3.51 4.052,3.708 0.26,0.198 10 false SO 3.802,3.094 4.063,3.323 0.26,0.229 10 false BO 4.104,2.573 4.26,2.729 0.156,0.156 10 false 3 2.958,2.99 3.073,3.146 0.115,0.156 10 false 4 2.958,3.375 3.073,3.531 0.115,0.156 10 false 5 4.104,3.375 4.26,3.531 0.156,0.156 10 false 2 4.104,2.958 4.26,3.115 0.156,0.156 10 false 1 2.958,2.583 3.083,2.76 0.125,0.177 10 false 6 2.896,3.792 3.448,4.094 0.552,0.302 10 false B10 0.292,3.781 0.802,4.115 0.51,0.333 10 false B11 5.333,1.813 6.844,2.135 1.51,0.323 10 false Clearance Warning ECU Assembly 5.688,0.573 6.115,0.781 0.427,0.208 10 false SOF 5.698,1.365 6.156,1.615 0.458,0.25 10 false E5 5.688,0.969 6.135,1.198 0.448,0.229 10 false BOF 5.51,1.24 5.698,1.396 0.188,0.156 10 false 3 5.51,0.427 5.688,0.583 0.177,0.156 10 false 4 5.5,0.833 5.677,0.99 0.177,0.156 10 false 2 5.333,1.646 5.781,1.896 0.448,0.25 10 false I24 5.344,3.781 5.927,4.208 0.583,0.427 10 false B9 2.896,1.667 3.448,2.021 0.552,0.354 10 false B12 5.344,3.948 6.771,4.563 1.427,0.615 10 false Front Corner Ultrasonic Sensor LH 2.896,1.823 4.354,2.375 1.458,0.552 10 false Front Corner Ultrasonic Sensor RH 2.896,3.948 4.365,4.302 1.469,0.354 10 false Front Center Ultrasonic Sensor LH 0.292,3.948 1.719,4.542 1.427,0.594 10 false Front Center Ultrasonic Sensor RH

CAUTION / NOTICE / HINT

NOTICE:: ·

Perform registration after replacing or removing and installing the ultrasonic sensor or clearance warning ECU assembly.

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>TOYOTA PARKING ASSIST-SENSOR SYSTEM (w/ Parking Support Brake System)>CALIBRATION202104,202304,_56,_080754,_0470653,RM100000001VNUD,202304,999999,_56,_080754,_0470653,RM100000002AHB8,

·

If a DTC is detected again after the repair, turn the ignition switch to ON and turn the TOYOTA parking assist-sensor system on, and then clear the DTC.

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>TOYOTA PARKING ASSIST-SENSOR SYSTEM (w/ Parking Support Brake System)>DTC CHECK / CLEAR202104,999999,_56,_080754,_0470653,RM100000001VNUH,

·

If C1AE396 is output at the same time, check C1AE396 first.

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>TOYOTA PARKING ASSIST-SENSOR SYSTEM (w/ Parking Support Brake System)>C1AE396202104,999999,_56,_080754,_0470653,RM100000001VNUQ,C1AE396

PROCEDURE

1.VEHICLE CONDITION AND WORK DETAILS CHECK

Check the vehicle condition and work details.

Result:

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

2.CHECK CONNECTOR CONNECTION CONDITION (ULTRASONIC SENSOR)

GO TO CALIBRATION

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>PARKING SUPPORT BRAKE SYSTEM>CALIBRATION202104,202304,_56,_080754,_0470654,RM100000001VNVD,202304,999999,_56,_080754,_0470654,RM100000002AHFT,

2.CHECK CONNECTOR CONNECTION CONDITION (ULTRASONIC SENSOR)

Check that the connector is properly connected to the front corner ultrasonic sensor and front center ultrasonic sensor.

Result:

Proceed to
NEXT

3.CHECK DTC OUTPUT

Check for DTCs.

Body Electrical > Clearance Warning > Trouble Codes: 50001 438

According to the display on the GTS, clear the DTCs.

Body Electrical > Clearance Warning > Clear DTCs: 50002 438

Recheck for DTCs.

Body Electrical > Clearance Warning > Trouble Codes: 50001 438

Result:

Result	Proceed to
C1AE287 is not output	A
C1AE287 is output	B

END (CONNECTOR CONNECTION MALFUNCTION)

4.CHECK CONNECTOR CONNECTION CONDITION (CLEARANCE WARNING ECU ASSEMBLY)

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

Result:

Proceed to
NEXT

5.CHECK DTC OUTPUT

Check for DTCs.

Body Electrical > Clearance Warning > Trouble Codes: 50001 438

According to the display on the GTS, clear the DTCs.

Body Electrical > Clearance Warning > Clear DTCs: 50002 438

Recheck for DTCs.

Body Electrical > Clearance Warning > Trouble Codes: 50001 438

DTC OUTPUT COMBINATION:
Symptoms	DTC Detection
Symptoms	C1AE487	C1AE387	C1AE287	C1AE187
Symptom 1	Not output	Not output	Not output	Not output
Symptom 2	Output	Output	Output	Output
Symptom 3	Not output	Output	Output	Output
Symptom 4	Not output	Not output	Output	Output
Symptom 5	Not output	Not output	Not output	Output
Symptom 6	Not output	Not output	Output	Not output

Result:

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
Listed under symptom 6 in combination table	F

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING201906,999999,_V1,_080724,_0393250,RM100000001HWSQ,

GO TO CORRESPONDING FLOWCHART (TOYOTA PARKING ASSIST-SENSOR SYSTEM (C1AE487))

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>TOYOTA PARKING ASSIST-SENSOR SYSTEM (w/ Parking Support Brake System)>C1AE487202104,999999,_56,_080754,_0470653,RM100000001VNUR,C1AE487

GO TO CORRESPONDING FLOWCHART (TOYOTA PARKING ASSIST-SENSOR SYSTEM (C1AE387))

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>TOYOTA PARKING ASSIST-SENSOR SYSTEM (w/ Parking Support Brake System)>C1AE387202104,999999,_56,_080754,_0470653,RM100000001VNUP,C1AE387

6.CHECK WIRE HARNESS AND CONNECTOR (FRONT CENTER ULTRASONIC SENSOR LH - FRONT CENTER ULTRASONIC SENSOR RH)

GO TO CORRESPONDING FLOWCHART (TOYOTA PARKING ASSIST-SENSOR SYSTEM (C1AE187))

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>TOYOTA PARKING ASSIST-SENSOR SYSTEM (w/ Parking Support Brake System)>C1AE187202104,999999,_56,_080754,_0470653,RM100000001VNUL,C1AE187

7.REPLACE FRONT CENTER ULTRASONIC SENSOR LH

6.CHECK WIRE HARNESS AND CONNECTOR (FRONT CENTER ULTRASONIC SENSOR LH - FRONT CENTER ULTRASONIC SENSOR RH)

Disconnect the B11 front center ultrasonic sensor RH connector.

Disconnect the B10 front center ultrasonic sensor LH connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
B11-1 (BO) - B10-4 (BI)	Always	Below 1 Ω
B11-2 (SO) - B10-5 (SI)	Always	Below 1 Ω
B11-3 (EO) - B10-6 (EI)	Always	Below 1 Ω
B11-1 (BO) or B10-4 (BI) - Body ground	Always	10 kΩ or higher
B11-2 (SO) or B10-5 (SI) - Body ground	Always	10 kΩ or higher
B11-3 (EO) or B10-6 (EI) - Body ground	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

7.REPLACE FRONT CENTER ULTRASONIC SENSOR LH

REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR

7.REPLACE FRONT CENTER ULTRASONIC SENSOR LH

Replace the front center ultrasonic sensor LH with a new or normally functioning one.

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>ULTRASONIC SENSOR (for Front Side)>REMOVAL202104,202307,_56,_080754,_0470420,RM100000001VMMK,202307,999999,_56,_080754,_0470420,RM100000002CWH1,

HINT:: To check if the ultrasonic sensor is functioning correctly, replace it with another ultrasonic sensor.

Result:

Proceed to
NEXT

8.RECHECK FOR DTC

According to the display on the GTS, check for DTCs.

Body Electrical > Clearance Warning > Trouble Codes: 50001 438

According to the display on the GTS, clear the DTCs.

Body Electrical > Clearance Warning > Clear DTCs: 50002 438

Recheck for DTCs.

Body Electrical > Clearance Warning > Trouble Codes: 50001 438

Result:

Result	Proceed to
No DTC is output	A
"C1AE287" is output	B

END (FRONT CENTER ULTRASONIC SENSOR LH WAS DEFECTIVE)

REPLACE CLEARANCE WARNING ECU ASSEMBLY

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>CLEARANCE WARNING ECU>REMOVAL202104,202205,_56,_080754,_0394056,RM100000001W3WE,202205,202304,_56,_080754,_0394056,RM1000000022YOL,202304,202307,_56,_080754,_0394056,RM100000002BL87,202307,999999,_56,_080754,_0394056,RM100000002CWQI,