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)  C1AE987  Ultrasonic Sensor (Rear Right Corner) Missing Message  


DESCRIPTION

This DTC is stored when an open circuit or short occurs in the communication line between the rear corner ultrasonic sensor RH and the clearance warning ECU assembly, or when a malfunction occurs in the rear corner ultrasonic sensor RH.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1AE987 Ultrasonic Sensor (Rear Right Corner) Missing Message Rear corner ultrasonic sensor RH lost communication
·

Rear corner ultrasonic sensor RH

·

Harness or connector

·

Clearance warning ECU assembly



WIRING DIAGRAM

E410435E38
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 3.156,1.365 3.458,1.594 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 1.271,3.49 1.531,3.74 0.26,0.25 10 false SO 1.271,2.698 1.531,2.917 0.26,0.219 10 false EO 1.271,3.083 1.573,3.396 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 2.969,0.823 3.073,0.979 0.104,0.156 10 false 1 2.969,0.427 3.073,0.583 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 2.979,1.229 3.083,1.385 0.104,0.156 10 false 3 1.552,0.427 1.708,0.583 0.156,0.156 10 false 5 1.573,2.99 1.729,3.146 0.156,0.156 10 false 1 1.583,3.396 1.74,3.552 0.156,0.156 10 false 2 1.552,1.24 1.74,1.406 0.188,0.167 10 false 6 1.552,0.823 1.74,0.99 0.188,0.167 10 false 4 1.573,2.604 1.729,2.76 0.156,0.156 10 false 3 5.49,3.385 5.594,3.542 0.104,0.156 10 false 5 5.49,2.615 5.635,2.792 0.146,0.177 10 false 6 5.479,2.99 5.583,3.146 0.104,0.156 10 false 4 3.156,3.5 3.385,3.74 0.229,0.24 10 false SI 3.156,2.698 3.385,2.948 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 2.969,3.01 3.083,3.167 0.115,0.156 10 false 4 2.958,3.396 3.073,3.552 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 2.969,2.604 3.094,2.781 0.125,0.177 10 false 6 2.906,3.813 3.177,4 0.271,0.188 10 false R8 0.292,3.792 0.615,4 0.323,0.208 10 false R9 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 SOR 5.698,1.365 6.156,1.615 0.458,0.25 10 false E1 5.688,0.969 6.135,1.198 0.448,0.229 10 false BOR 5.448,0.438 5.74,0.677 0.292,0.24 10 false 21 5.448,1.24 5.708,1.427 0.26,0.188 10 false 20 5.448,0.833 5.677,1.031 0.229,0.198 10 false 19 5.333,1.646 5.792,1.896 0.458,0.25 10 false I24 5.344,3.781 5.677,4.021 0.333,0.24 10 false R7 2.906,1.667 3.25,1.885 0.344,0.219 10 false R10 5.344,3.948 6.813,4.302 1.469,0.354 10 false Rear Corner Ultrasonic Sensor LH 2.917,1.833 4.313,2.521 1.396,0.688 10 false Rear Corner Ultrasonic Sensor RH 2.906,3.979 4.313,4.531 1.406,0.552 10 false Rear Center Ultrasonic Sensor LH 0.292,3.969 1.74,4.656 1.448,0.688 10 false Rear 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)>CALIBRATION

·

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 / CLEAR



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 rear corner ultrasonic sensor and rear 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
C1AE987 is not output A
C1AE987 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
C1AE987 C1AE887 C1AE787 C1AE687
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 Output Not 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

6.CHECK WIRE HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - REAR CORNER ULTRASONIC SENSOR RH)

C

GO TO CORRESPONDING FLOWCHART (TOYOTA PARKING ASSIST-SENSOR SYSTEM (C1AE887))

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>TOYOTA PARKING ASSIST-SENSOR SYSTEM (w/ Parking Support Brake System)>C1AE887


D

GO TO CORRESPONDING FLOWCHART (TOYOTA PARKING ASSIST-SENSOR SYSTEM (C1AE787))

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>TOYOTA PARKING ASSIST-SENSOR SYSTEM (w/ Parking Support Brake System)>C1AE787


E

GO TO CORRESPONDING FLOWCHART (TOYOTA PARKING ASSIST-SENSOR SYSTEM (C1AE687))

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>TOYOTA PARKING ASSIST-SENSOR SYSTEM (w/ Parking Support Brake System)>C1AE687


F

7.REPLACE REAR CORNER ULTRASONIC SENSOR RH
6.CHECK WIRE HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - REAR CORNER ULTRASONIC SENSOR RH)
a.

Disconnect the I24 clearance warning ECU assembly connector.


b.

Disconnect the R10 rear corner ultrasonic sensor RH connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I24-19 (BOR) - R10-4 (BI) Always Below 1 Ω
I24-21 (SOR) - R10-5 (SI) Always Below 1 Ω
I24-20 (E1) - R10-6 (EI) Always Below 1 Ω
I24-19 (BOR) or R10-4 (BI) - Body ground Always 10 kΩ or higher
I24-21 (SOR) or R10-5 (SI) - Body ground Always 10 kΩ or higher
I24-20 (E1) or R10-6 (EI) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

7.REPLACE REAR CORNER ULTRASONIC SENSOR RH

NG

REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR

7.REPLACE REAR CORNER ULTRASONIC SENSOR RH
a.

Replace the rear corner ultrasonic sensor RH with a new or normally functioning one.

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

HINT:

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



Result:
Proceed to
NEXT



NEXT

8.CHECK FOR DTC
8.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
No DTC is output A
"C1AE987" is output B



A

END (REAR CORNER ULTRASONIC SENSOR RH WAS DEFECTIVE)

B

REPLACE CLEARANCE WARNING ECU ASSEMBLY

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