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)  C1AE387  Ultrasonic Sensor (Front Right 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 RH and the front corner ultrasonic sensor RH, or when a malfunction occurs in the front center ultrasonic sensor RH.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1AE387 Ultrasonic Sensor (Front Right Center) Missing Message Front center ultrasonic sensor RH lost communication
·

Front center ultrasonic sensor RH

·

Harness or connector

·

Clearance warning ECU assembly



WIRING DIAGRAM

E410481E73
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

PROCEDURE

1.VEHICLE CONDITION AND WORK DETAILS CHECK
a.

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



A

2.CHECK CONNECTOR CONNECTION CONDITION (ULTRASONIC SENSOR)

B

GO TO CALIBRATION

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>PARKING SUPPORT BRAKE SYSTEM>CALIBRATION


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.


Result:
Proceed to
NEXT



NEXT

3.CHECK FOR DTC
3.CHECK FOR DTC
a.

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

Body Electrical > Clearance Warning > Trouble Codes
50001 438

b.

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

Body Electrical > Clearance Warning > Clear DTCs
50002 438

c.

Recheck for DTCs.

Body Electrical > Clearance Warning > Trouble Codes
50001 438

Result:
Result Proceed to
C1AE387 is not output A
C1AE387 is output B



A

END (CONNECTOR CONNECTION MALFUNCTION)

B

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

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


Result:
Proceed to
NEXT



NEXT

5.CHECK FOR DTC
5.CHECK FOR DTC
a.

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

Body Electrical > Clearance Warning > Trouble Codes
50001 438

b.

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

Body Electrical > Clearance Warning > Clear DTCs
50002 438

c.

Recheck for DTCs.

Body Electrical > Clearance Warning > Trouble Codes
50001 438
DTC OUTPUT COMBINATION:
Symptoms DTC Detection
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 Output Not 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



A

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


B

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)>C1AE487


C

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

D

GO TO CORRESPONDING FLOWCHART (TOYOTA PARKING ASSIST-SENSOR SYSTEM (C1AE287))

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>TOYOTA PARKING ASSIST-SENSOR SYSTEM (w/ Parking Support Brake System)>C1AE287


E

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)>C1AE187


F

7.REPLACE FRONT CENTER ULTRASONIC SENSOR RH
6.CHECK WIRE HARNESS AND CONNECTOR (FRONT CORNER ULTRASONIC SENSOR RH - FRONT CENTER ULTRASONIC SENSOR RH)
a.

Disconnect the B12 front corner ultrasonic sensor RH connector.


b.

Disconnect the B11 front center ultrasonic sensor RH connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
B12-1 (BO) - B11-4 (BI) Always Below 1 Ω
B12-2 (SO) - B11-5 (SI) Always Below 1 Ω
B12-3 (EO) - B11-6 (EI) Always Below 1 Ω
B12-1 (BO) or B11-4 (BI) - Body ground Always 10 kΩ or higher
B12-2 (SO) or B11-5 (SI) - Body ground Always 10 kΩ or higher
B12-3 (EO) or B11-6 (EI) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

7.REPLACE FRONT CENTER ULTRASONIC SENSOR RH

NG

REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR

7.REPLACE FRONT CENTER ULTRASONIC SENSOR RH
a.

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

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>ULTRASONIC SENSOR (for Front Side)>REMOVAL

HINT:

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



Result:
Proceed to
NEXT



NEXT

8.RECHECK FOR DTC
8.RECHECK FOR DTC
a.

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

Body Electrical > Clearance Warning > Trouble Codes
50001 438

b.

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

Body Electrical > Clearance Warning > Clear DTCs
50002 438

c.

Recheck for DTCs.

Body Electrical > Clearance Warning > Trouble Codes
50001 438

Result:
Result Proceed to
No DTC is output A
"C1AE387" is output B



A

END (FRONT CENTER ULTRASONIC SENSOR RH WAS DEFECTIVE)

B

REPLACE CLEARANCE WARNING ECU ASSEMBLY

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>CLEARANCE WARNING ECU>REMOVAL