C1AEC

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

DTC 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 -- USE SIMULATION METHOD TO CHECK
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
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - FRONT SIDE SENSOR LH)

(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 SIDE SENSOR LH - FRONT CORNER SENSOR LH)

(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 CORNER SENSOR LH - FRONT CENTER SENSOR LH)

(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 CENTER SENSOR LH - FRONT CENTER SENSOR RH)

(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 CENTER SENSOR RH - FRONT CORNER SENSOR RH)

(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 CORNER SENSOR RH - FRONT SIDE SENSOR RH)

(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

D -- USE SIMULATION METHOD TO CHECK
C -- REPLACE FRONT CORNER NO. 1 ULTRASONIC SENSOR RH
B -- REPLACE FRONT CENTER NO. 1 ULTRASONIC SENSOR LH
A -- Continue to next step.
11. REPLACE FRONT SIDE NO. 2 ULTRASONIC SENSOR LH

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

D -- END (ULTRASONIC SENSOR IS DEFECTIVE)
C -- REPLACE FRONT CORNER NO. 1 ULTRASONIC SENSOR RH
B -- REPLACE FRONT CENTER NO. 1 ULTRASONIC SENSOR LH
A -- Continue to next step.
13. REPLACE FRONT SIDE NO. 2 ULTRASONIC SENSOR RH

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

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

D -- END (ULTRASONIC SENSOR IS DEFECTIVE)
C -- REPLACE FRONT CORNER NO. 1 ULTRASONIC SENSOR RH
B -- REPLACE CLEARANCE WARNING ECU
A -- Continue to next step.
17. REPLACE FRONT CENTER NO. 1 ULTRASONIC SENSOR LH

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

C -- END (ULTRASONIC SENSOR IS DEFECTIVE)
B -- REPLACE FRONT CORNER NO. 1 ULTRASONIC SENSOR RH
A -- Continue to next step.
19. REPLACE FRONT CENTER NO. 1 ULTRASONIC SENSOR RH

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

C -- END (ULTRASONIC SENSOR IS DEFECTIVE)
B -- REPLACE CLEARANCE WARNING ECU
A -- Continue to next step.
21. REPLACE FRONT CORNER NO. 1 ULTRASONIC SENSOR RH

(a) Replace the ultrasonic sensor with a normally functioning sensor Removal.
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 (ULTRASONIC SENSOR IS DEFECTIVE)
A -- REPLACE CLEARANCE WARNING ECU
23. CHECK DTC OUTPUT
(a) Clear the DTCs Intuitive Parking Assist System.
(b) Check for DTCs Intuitive Parking Assist System.

Result

C -- USE SIMULATION METHOD TO CHECK
B -- GO TO DTC C1AEE
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
OK -- Continue to next step.
25. CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - FRONT CORNER SENSOR LH)
(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 CORNER SENSOR LH - FRONT CENTER SENSOR LH)

(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 CENTER SENSOR LH - FRONT CENTER SENSOR RH)

(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 CENTER SENSOR RH - FRONT CORNER SENSOR RH)

(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

C -- USE SIMULATION METHOD TO CHECK
B -- REPLACE FRONT CENTER NO. 1 ULTRASONIC SENSOR LH
A -- Continue to next step.
30. REPLACE FRONT CORNER NO. 1 ULTRASONIC SENSOR LH

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

C -- END (ULTRASONIC SENSOR IS DEFECTIVE)
B -- REPLACE FRONT CENTER NO. 1 ULTRASONIC SENSOR LH
A -- Continue to next step.
32. REPLACE FRONT CORNER NO. 1 ULTRASONIC SENSOR RH

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

C -- END (ULTRASONIC SENSOR IS DEFECTIVE)
B -- REPLACE PARKING ASSIST ECU
A -- Continue to next step.
34. REPLACE FRONT CENTER NO. 1 ULTRASONIC SENSOR LH

(a) Replace the ultrasonic sensor with a normally functioning sensor Removal.
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 (ULTRASONIC SENSOR IS DEFECTIVE)
A -- Continue to next step.
36. REPLACE FRONT CENTER NO. 1 ULTRASONIC SENSOR RH

(a) Replace the ultrasonic sensor with a normally functioning sensor Removal.
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 (ULTRASONIC SENSOR IS DEFECTIVE)
A -- REPLACE PARKING ASSIST ECU