C1AEC

PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM: C1AEC: Front Sensor Communication Malfunction
C1AEC - Front Sensor Communication Malfunction

DESCRIPTION

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





HINT
*1: w/o Advanced parking guidance system

*2: w/ Advanced parking guidance system

WIRING DIAGRAM









INSPECTION PROCEDURE

PROCEDURE

1. SYSTEM CHECK

(a) Check if the vehicle is equipped with the advanced parking guidance system.

Result





B -- CHECK DTC OUTPUT
A -- Continue to next step.

2. CHECK DTC OUTPUT

(a) Clear the DTCs Intuitive Parking Assist System.

(b) Check for DTCs Intuitive Parking Assist System.

Result





B -- END
A -- Continue to next step.

3. CHECK CLEARANCE WARNING ECU

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





Standard resistance:





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

Standard voltage:





NG -- REPLACE CLEARANCE WARNING ECU Removal
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - FRONT LEFT SIDE SENSOR)

(a) Disconnect the L19 ECU connector.





(b) Disconnect the D1 sensor connector.

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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (FRONT LEFT SIDE SENSOR - FRONT LEFT CORNER SENSOR)

(a) Disconnect the D1 and D2 sensor connectors.





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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (FRONT LEFT CORNER SENSOR - FRONT LEFT CENTER SENSOR)

(a) Disconnect the D2 and D3 sensor connectors.





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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

7. CHECK HARNESS AND CONNECTOR (FRONT LEFT CENTER SENSOR - FRONT RIGHT CENTER SENSOR)

(a) Disconnect the D3 and D4 sensor connectors.





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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

8. CHECK HARNESS AND CONNECTOR (FRONT RIGHT CENTER SENSOR - FRONT RIGHT CORNER SENSOR)

(a) Disconnect the D4 and D6 sensor connectors.





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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

9. CHECK HARNESS AND CONNECTOR (FRONT RIGHT CORNER SENSOR - FRONT RIGHT SIDE SENSOR)

(a) Disconnect the D6 and D5 sensor connectors.





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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

10. CHECK DTC OUTPUT

(a) Clear the DTCs Intuitive Parking Assist System.

(b) Check for DTCs Intuitive Parking Assist System.

Result





B -- REPLACE NO. 1 ULTRASONIC SENSOR (FRONT LEFT CENTER SENSOR)

C -- REPLACE NO. 1 ULTRASONIC SENSOR (FRONT RIGHT CORNER SENSOR)

D -- END
A -- Continue to next step.

11. REPLACE NO. 2 ULTRASONIC SENSOR (FRONT LEFT SIDE SENSOR)

(a) Replace the ultrasonic sensor Removal with a normally functioning sensor.





NEXT -- Continue to next step.

12. CHECK DTC OUTPUT

(a) Clear the DTCs Intuitive Parking Assist System.

(b) Check for DTCs Intuitive Parking Assist System.

Result





B -- REPLACE NO. 1 ULTRASONIC SENSOR (FRONT LEFT CENTER SENSOR)

C -- REPLACE NO. 1 ULTRASONIC SENSOR (FRONT RIGHT CORNER SENSOR)

D -- END
A -- Continue to next step.

13. REPLACE NO. 2 ULTRASONIC SENSOR (FRONT RIGHT SIDE SENSOR)

(a) Replace the ultrasonic sensor Removal with a normally functioning sensor.





NEXT -- Continue to next step.

14. CHECK DTC OUTPUT

(a) Clear the DTCs Intuitive Parking Assist System.

(b) Check for DTCs Intuitive Parking Assist System.

Result





B -- REPLACE NO. 1 ULTRASONIC SENSOR (FRONT LEFT CENTER SENSOR)

C -- REPLACE NO. 1 ULTRASONIC SENSOR (FRONT RIGHT CORNER SENSOR)

D -- END
A -- Continue to next step.

15. REPLACE NO. 1 ULTRASONIC SENSOR (FRONT LEFT CORNER SENSOR)

(a) Replace the ultrasonic sensor Removal with a normally functioning sensor.





NEXT -- Continue to next step.

16. CHECK DTC OUTPUT

(a) Clear the DTCs Intuitive Parking Assist System.

(b) Check for DTCs Intuitive Parking Assist System.

Result





B -- REPLACE CLEARANCE WARNING ECU Removal

C -- REPLACE NO. 1 ULTRASONIC SENSOR (FRONT RIGHT CORNER SENSOR)

D -- END
A -- Continue to next step.

17. REPLACE NO. 1 ULTRASONIC SENSOR (FRONT LEFT CENTER SENSOR)

(a) Replace the ultrasonic sensor Removal with a normally functioning sensor.





NEXT -- Continue to next step.

18. CHECK DTC OUTPUT

(a) Clear the DTCs Intuitive Parking Assist System.

(b) Check for DTCs Intuitive Parking Assist System.

Result





B -- REPLACE NO. 1 ULTRASONIC SENSOR (FRONT RIGHT CORNER SENSOR)

C -- END
A -- Continue to next step.

19. REPLACE NO. 1 ULTRASONIC SENSOR (FRONT RIGHT CENTER SENSOR)

(a) Replace the ultrasonic sensor Removal with a normally functioning sensor.





NEXT -- Continue to next step.

20. CHECK DTC OUTPUT

(a) Clear the DTCs Intuitive Parking Assist System.

(b) Check for DTCs Intuitive Parking Assist System.

Result





B -- REPLACE CLEARANCE WARNING ECU Removal

C -- END
A -- Continue to next step.

21. REPLACE NO. 1 ULTRASONIC SENSOR (FRONT RIGHT CORNER SENSOR)

(a) Replace the ultrasonic sensor Removal with a normally functioning sensor.





NEXT -- Continue to next step.

22. CHECK DTC OUTPUT

(a) Clear the DTCs Intuitive Parking Assist System.

(b) Check for DTCs Intuitive Parking Assist System.

Result





B -- END

A -- REPLACE CLEARANCE WARNING ECU Removal

23. CHECK DTC OUTPUT

(a) Clear the DTCs Intuitive Parking Assist System.

(b) Check for DTCs Intuitive Parking Assist System.

Result





B -- GO TO DTC C1AEE Intuitive Parking Assist System

C -- END
A -- Continue to next step.

24. CHECK PARKING ASSIST ECU

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





Standard resistance:





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

Standard resistance:





NG -- REPLACE PARKING ASSIST ECU Removal
OK -- Continue to next step.

25. CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - FRONT LEFT CORNER SENSOR)

(a) Disconnect the L91 ECU connector.

(b) Disconnect the D2 sensor connector.





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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

26. CHECK HARNESS AND CONNECTOR (FRONT LEFT CORNER SENSOR - FRONT LEFT CENTER SENSOR)

(a) Disconnect the D2 and D3 sensor connectors.





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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

27. CHECK HARNESS AND CONNECTOR (FRONT LEFT CENTER SENSOR - FRONT RIGHT CENTER SENSOR)

(a) Disconnect the D3 and D4 sensor connectors.





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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

28. CHECK HARNESS AND CONNECTOR (FRONT RIGHT CENTER SENSOR - FRONT RIGHT CORNER SENSOR)

(a) Disconnect the D4 and D6 sensor connectors.





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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

29. CHECK DTC OUTPUT

(a) Clear the DTCs Intuitive Parking Assist System.

(b) Check for DTCs Intuitive Parking Assist System.

Result





B -- REPLACE NO. 1 ULTRASONIC SENSOR (FRONT LEFT CENTER SENSOR)

C -- END
A -- Continue to next step.

30. REPLACE NO. 1 ULTRASONIC SENSOR (FRONT LEFT CORNER SENSOR)

(a) Replace the ultrasonic sensor Removal with a normally functioning sensor.





NEXT -- Continue to next step.

31. CHECK DTC OUTPUT

(a) Clear the DTCs Intuitive Parking Assist System.

(b) Check for DTCs Intuitive Parking Assist System.

Result





B -- REPLACE NO. 1 ULTRASONIC SENSOR (FRONT LEFT CENTER SENSOR)

C -- END
A -- Continue to next step.

32. REPLACE NO. 1 ULTRASONIC SENSOR (FRONT RIGHT CORNER SENSOR)

(a) Replace the ultrasonic sensor Removal with a normally functioning sensor.





NEXT -- Continue to next step.

33. CHECK DTC OUTPUT

(a) Clear the DTCs Intuitive Parking Assist System.

(b) Check for DTCs Intuitive Parking Assist System.

Result





B -- REPLACE PARKING ASSIST ECU Removal

C -- END
A -- Continue to next step.

34. REPLACE NO. 1 ULTRASONIC SENSOR (FRONT LEFT CENTER SENSOR)

(a) Replace the ultrasonic sensor Removal with a normally functioning sensor.





NEXT -- Continue to next step.

35. CHECK DTC OUTPUT

(a) Clear the DTCs Intuitive Parking Assist System.

(b) Check for DTCs Intuitive Parking Assist System.

Result





B -- END
A -- Continue to next step.

36. REPLACE NO. 1 ULTRASONIC SENSOR (FRONT RIGHT CENTER SENSOR)

(a) Replace the ultrasonic sensor Removal with a normally functioning sensor.





NEXT -- Continue to next step.

37. CHECK DTC OUTPUT

(a) Clear the DTCs Intuitive Parking Assist System.

(b) Check for DTCs Intuitive Parking Assist System.

Result





B -- END

A -- REPLACE PARKING ASSIST ECU Removal