DESCRIPTION
This DTC is stored when there is an open or short circuit in the communication line between the rear sensors and the ECU, or when there is a malfunction in a rear sensor.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
C1AED |
An open or short circuit in the communication line between the rear sensors and ECU or a malfunction in a rear sensor during initialization mode after the engine switch is turned on (IG). |
|
WIRING DIAGRAM
PROCEDURE
1. |
CHECK DTC OUTPUT (C1AED) |
(a) Check for DTCs (See page ).
(b) Clear the DTCs (See page ).
(c) Recheck for DTCs (See page ).
Result |
Proceed to |
---|---|
DTC C1AED is output |
A |
No DTCs are output |
B |
B |
USE SIMULATION METHOD TO CHECK |
|
2. |
CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - REAR LEFT SENSOR) |
(a) Disconnect the D79 clearance warning ECU assembly connector.
(b) Disconnect the Q1 No. 1 ultrasonic sensor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D79-22 (BOR) - Q1-1 (BI) |
Always |
Below 1 Ω |
D79-24 (SOR) - Q1-3 (SI) |
Always |
Below 1 Ω |
D79-23 (E1) - Q1-5 (EI) |
Always |
Below 1 Ω |
D79-22 (BOR) - Body ground |
Always |
10 kΩ or higher |
D79-24 (SOR) - Body ground |
Always |
10 kΩ or higher |
D79-23 (E1) - Body ground |
Always |
10 kΩ or higher |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
CHECK HARNESS AND CONNECTOR (REAR LEFT SENSOR - REAR LEFT CENTER SENSOR) |
(a) Disconnect the Q2 No. 1 ultrasonic sensor connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
Q1-2 (BO) - Q2-1 (BI) |
Always |
Below 1 Ω |
Q1-4 (SO) - Q2-3 (SI) |
Always |
Below 1 Ω |
Q1-6 (EO) - Q2-5 (EI) |
Always |
Below 1 Ω |
Q1-2 (BO) - Body ground |
Always |
10 kΩ or higher |
Q1-4 (SO) - Body ground |
Always |
10 kΩ or higher |
Q1-6 (EO) - Body ground |
Always |
10 kΩ or higher |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
CHECK HARNESS AND CONNECTOR (REAR LEFT CENTER SENSOR - REAR RIGHT CENTER SENSOR) |
(a) Disconnect the Q3 No. 1 ultrasonic sensor connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
Q2-2 (BO) - Q3-1 (BI) |
Always |
Below 1 Ω |
Q2-4 (SO) - Q3-3 (SI) |
Always |
Below 1 Ω |
Q2-6 (EO) - Q3-5 (EI) |
Always |
Below 1 Ω |
Q2-2 (BO) - Body ground |
Always |
10 kΩ or higher |
Q2-4 (SO) - Body ground |
Always |
10 kΩ or higher |
Q2-6 (EO) - Body ground |
Always |
10 kΩ or higher |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
CHECK HARNESS AND CONNECTOR (REAR RIGHT CENTER SENSOR - REAR RIGHT SENSOR) |
(a) Disconnect the Q4 No. 1 ultrasonic sensor connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
Q3-2 (BO) - Q4-1 (BI) |
Always |
Below 1 Ω |
Q3-4 (SO) - Q4-3 (SI) |
Always |
Below 1 Ω |
Q3-6 (EO) - Q4-5 (EI) |
Always |
Below 1 Ω |
Q3-2 (BO) - Body ground |
Always |
10 kΩ or higher |
Q3-4 (SO) - Body ground |
Always |
10 kΩ or higher |
Q3-6 (EO) - Body ground |
Always |
10 kΩ or higher |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
6. |
INSPECT NO. 1 ULTRASONIC SENSOR (REAR LEFT SENSOR) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR LEFT SENSOR) |
|
7. |
INSPECT NO. 1 ULTRASONIC SENSOR (REAR LEFT CENTER SENSOR) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR LEFT CENTER SENSOR) |
|
8. |
INSPECT NO. 1 ULTRASONIC SENSOR (REAR RIGHT CENTER SENSOR) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR RIGHT CENTER SENSOR) |
|
9. |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR LEFT SENSOR) |
|
10. |
CHECK DTC OUTPUT (C1AED) |
(a) Clear the DTCs (See page ).
(b) Check for DTCs (See page ).
Result |
Proceed to |
---|---|
DTC C1AED is output |
A |
No DTCs are output |
B |
B |
END |
|
11. |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR LEFT CENTER SENSOR) |
|
12. |
CHECK DTC OUTPUT (C1AED) |
(a) Clear the DTCs (See page ).
(b) Check for DTCs (See page ).
Result |
Proceed to |
---|---|
DTC C1AED is output |
A |
No DTCs are output |
B |
B |
END |
|
13. |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR RIGHT CENTER SENSOR) |
|
14. |
CHECK DTC OUTPUT (C1AED) |
(a) Clear the DTCs (See page ).
(b) Check for DTCs (See page ).
Result |
Proceed to |
---|---|
DTC C1AED is output |
A |
No DTCs are output |
B |
B |
END |
|
15. |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR RIGHT SENSOR) |
|
16. |
CHECK DTC OUTPUT (C1AED) |
(a) Clear the DTCs (See page ).
(b) Check for DTCs (See page ).
Result |
Proceed to |
---|---|
DTC C1AED is output |
A |
No DTCs are output |
B |
A |
REPLACE CLEARANCE WARNING ECU ASSEMBLY |
B |
END |
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