- No. 1 ultrasonic sensor (rear sensor and rear center sensor) circuit
- Clearance warning ECU
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM1000000019043 |
| Model Year Start: 2018 | Model: Sienna | Prod Date Range: [11/2017 - ] |
| Title: PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM: C1AED; Rear Sensor Communication Malfunction; 2018 - 2020 MY Sienna [11/2017 - ] | ||
|
DTC |
C1AED |
Rear Sensor Communication Malfunction |
DESCRIPTION
This DTC is stored when there is an open or short circuit in the communication line between the No. 1 ultrasonic sensors (rear sensor and rear center sensor) and the ECU, or when there is a malfunction in a No. 1 ultrasonic sensor (rear sensor and rear center sensor).
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
C1AED |
An open or short circuit in the communication line between the No. 1 ultrasonic sensors (rear sensor and rear center sensor) and ECU or a malfunction in a No. 1 ultrasonic sensor (rear sensor and rear center sensor) during initialization mode after the ignition switch is turned to ON. |
|
WIRING DIAGRAM
PROCEDURE
|
1. |
CHECK DTC OUTPUT |
(a) Clear the DTCs.
Click here
![2016 - 2020 MY Sienna [12/2015 - ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM: DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
(b) Check for DTCs.
Click here
Result
|
Result |
Proceed to |
|---|---|
|
DTC C1AED is output |
A |
|
No DTC is output |
B |
| B |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (NO. 1 ULTRASONIC SENSOR (REAR LEFT SENSOR) - CLEARANCE WARNING ECU) |
(a) Disconnect the M8 No. 1 ultrasonic sensor (rear left sensor) connector.
(b) Disconnect the D200 clearance warning ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
M8-1 (BI) - D200-22 (BOR) |
Always |
Below 1 Ω |
|
M8-3 (SI) - D200-24 (SOR) |
Always |
Below 1 Ω |
|
M8-5 (EI) - D200-23 (E1) |
Always |
Below 1 Ω |
|
M8-1 (BI) or D200-22 (BOR) - Body ground |
Always |
10 kΩ or higher |
|
M8-3 (SI) or D200-24 (SOR) - Body ground |
Always |
10 kΩ or higher |
|
M8-5 (EI) or D200-23 (E1) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
CHECK HARNESS AND CONNECTOR (NO. 1 ULTRASONIC SENSOR (REAR LEFT SENSOR) - NO. 1 ULTRASONIC SENSOR (REAR LEFT CENTER SENSOR) |
(a) Disconnect the M7 No. 1 ultrasonic sensor (rear left center sensor) and M8 No. 1 ultrasonic sensor (rear left sensor) connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
M8-2 (BO) - M7-1 (BI) |
Always |
Below 1 Ω |
|
M8-4 (SO) - M7-3 (SI) |
Always |
Below 1 Ω |
|
M8-6 (EO) - M7-5 (EI) |
Always |
Below 1 Ω |
|
M8-2 (BO) or M7-1 (BI) - Body ground |
Always |
10 kΩ or higher |
|
M8-4 (SO) or M7-3 (SI) - Body ground |
Always |
10 kΩ or higher |
|
M8-6 (EO) or M7-5 (EI) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
CHECK HARNESS AND CONNECTOR (NO. 1 ULTRASONIC SENSOR (REAR LEFT CENTER SENSOR) - NO. 1 ULTRASONIC SENSOR (REAR RIGHT CENTER SENSOR)) |
(a) Disconnect the M6 No. 1 ultrasonic sensor (rear right center sensor) and M7 No. 1 ultrasonic sensor (rear left center sensor) connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
M7-2 (BO) - M6-1 (BI) |
Always |
Below 1 Ω |
|
M7-4 (SO) - M6-3 (SI) |
Always |
Below 1 Ω |
|
M7-6 (EO) - M6-5 (EI) |
Always |
Below 1 Ω |
|
M7-2 (BO) or M6-1 (BI) - Body ground |
Always |
10 kΩ or higher |
|
M7-4 (SO) or M6-3 (SI) - Body ground |
Always |
10 kΩ or higher |
|
M7-6 (EO) or M6-5 (EI) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
5. |
CHECK HARNESS AND CONNECTOR (NO. 1 ULTRASONIC SENSOR (REAR RIGHT CENTER SENSOR) - NO. 1 ULTRASONIC SENSOR (REAR RIGHT SENSOR)) |
(a) Disconnect the M5 No. 1 ultrasonic sensor (rear right sensor) and M6 No. 1 ultrasonic sensor (rear right center sensor) connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
M6-2 (BO) - M5-1 (BI) |
Always |
Below 1 Ω |
|
M6-4 (SO) - M5-3 (SI) |
Always |
Below 1 Ω |
|
M6-6 (EO) - M5-5 (EI) |
Always |
Below 1 Ω |
|
M6-2 (BO) or M5-1 (BI) - Body ground |
Always |
10 kΩ or higher |
|
M6-4 (SO) or M5-3 (SI) - Body ground |
Always |
10 kΩ or higher |
|
M6-6 (EO) or M5-5 (EI) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
6. |
INSPECT NO. 1 ULTRASONIC SENSOR (REAR LEFT SENSOR) |
(a) Remove the No. 1 ultrasonic sensor (rear left sensor).
Click here
(b) Inspect the No. 1 ultrasonic sensor (rear left sensor).
Click here
| NG |
|
|
|
7. |
INSPECT NO. 1 ULTRASONIC SENSOR (REAR LEFT CENTER SENSOR) |
(a) Remove the No. 1 ultrasonic sensor (rear left center sensor).
Click here
(b) Inspect the No. 1 ultrasonic sensor (rear left center sensor).
Click here
| NG |
|
|
|
8. |
INSPECT NO. 1 ULTRASONIC SENSOR (REAR RIGHT CENTER SENSOR) |
(a) Remove the No. 1 ultrasonic sensor (rear right center sensor).
Click here
(b) Inspect the No. 1 ultrasonic sensor (rear right center sensor).
Click here
| NG |
|
|
|
9. |
INSPECT NO. 1 ULTRASONIC SENSOR (REAR RIGHT SENSOR) |
(a) Remove the No. 1 ultrasonic sensor (rear right sensor).
Click here
(b) Inspect the No. 1 ultrasonic sensor (rear right sensor).
Click here
| NG |
|
|
|
10. |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR LEFT SENSOR) |
(a) Replace the No. 1 ultrasonic sensor (rear left sensor).
Click here
|
|
11. |
CHECK DTC OUTPUT |
(a) Clear the DTCs.
Click here
(b) Check for DTCs.
Click here
Result
|
Result |
Proceed to |
|---|---|
|
DTC C1AED is output and multi-information display (combination meter assembly) indicates open circuit (Rear Left, Rear Center and Rear Right) |
A |
|
DTC C1AED is output and multi-information display (combination meter assembly) indicates open circuit (Rear Left and Rear Center) |
B |
|
No DTC is output |
C |
| A |
|
| C |
|
END (NO. 1 ULTRASONIC SENSOR (REAR LEFT SENSOR) WAS DEFECTIVE) |
|
|
12. |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR LEFT CENTER SENSOR) |
(a) Replace the No. 1 ultrasonic sensor (rear left center sensor).
Click here
|
|
13. |
CHECK DTC OUTPUT |
(a) Clear the DTCs.
Click here
(b) Check for DTCs.
Click here
Result
|
Result |
Proceed to |
|---|---|
|
DTC C1AED is output and multi-information display (combination meter assembly) indicates open circuit (Rear Left and Rear Center) |
A |
|
No DTC is output |
B |
| B |
|
END (NO. 1 ULTRASONIC SENSOR (REAR LEFT CENTER SENSOR) WAS DEFECTIVE) |
|
|
14. |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR RIGHT CENTER SENSOR) |
(a) Replace the No. 1 ultrasonic sensor (rear right center sensor)
Click here
|
|
15. |
CHECK DTC OUTPUT |
(a) Clear the DTCs.
Click here
(b) Check for DTCs.
Click here
Result
|
Result |
Proceed to |
|---|---|
|
DTC C1AED is output and multi-information display (combination meter assembly) indicates open circuit (Rear Left, Rear Center and Rear Right) |
A |
|
No DTC is output |
B |
| A |
|
| B |
|
END (NO. 1 ULTRASONIC SENSOR (REAR RIGHT CENTER SENSOR) WAS DEFECTIVE) |
|
16. |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR RIGHT SENSOR) |
(a) Replace the No. 1 ultrasonic sensor (rear right sensor).
Click here
|
|
17. |
CHECK DTC OUTPUT |
(a) Clear the DTCs.
Click here
(b) Check for DTCs.
Click here
Result
|
Result |
Proceed to |
|---|---|
|
DTC C1AED is output and multi-information display (combination meter assembly) indicates open circuit (Rear Left and Rear Center) |
A |
|
DTC C1AED is output and multi-information display (combination meter assembly) indicates open circuit (Rear Left, Rear Center and Rear Right) |
B |
|
No DTC is output |
C |
| B |
|
| C |
|
END (NO. 1 ULTRASONIC SENSOR (REAR RIGHT SENSOR) WAS DEFECTIVE) |
|
|
18. |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR LEFT CENTER SENSOR) |
(a) Replace the No. 1 ultrasonic sensor (rear left center sensor).
Click here
|
|
19. |
CHECK DTC OUTPUT |
(a) Clear the DTCs.
Click here
(b) Check for DTCs.
Click here
Result
|
Result |
Proceed to |
|---|---|
|
DTC C1AED is output and multi-information display (combination meter assembly) indicates open circuit (Rear Left and Rear Center) |
A |
|
No DTC is output |
B |
| B |
|
END (NO. 1 ULTRASONIC SENSOR (REAR LEFT CENTER SENSOR) WAS DEFECTIVE) |
|
|
20. |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR RIGHT CENTER SENSOR) |
(a) Replace the No. 1 ultrasonic sensor (rear right center sensor)
Click here
|
|
21. |
CHECK DTC OUTPUT |
(a) Clear the DTCs.
Click here
(b) Check for DTCs.
Click here
Result
|
Result |
Proceed to |
|---|---|
|
DTC C1AED is output and multi-information display (combination meter assembly) indicates open circuit (Rear Left, Rear Center and Rear Right) |
A |
|
No DTC is output |
B |
| A |
|
| B |
|
END (NO. 1 ULTRASONIC SENSOR (REAR RIGHT CENTER SENSOR) WAS DEFECTIVE) |
|
|