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 ignition switch is turned ON. |
|
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 CORNER SENSOR RH) |
(a) Disconnect the C30 connector from the clearance warning ECU assembly.
(b) Disconnect the R43 connector from the No. 1 ultrasonic sensor.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
C30-22 (BOR) - R43-1 (BI) |
Always |
Below 1 Ω |
C30-24 (SOR) - R43-3 (SI) |
||
C30-23 (E1) - R43-5 (EI) |
||
C30-22 (BOR) - Body ground |
10 kΩ or higher |
|
C30-24 (SOR) - Body ground |
||
C30-23 (E1) - Body ground |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
CHECK HARNESS AND CONNECTOR (REAR CORNER SENSOR RH - REAR CENTER SENSOR RH) |
(a) Disconnect the R43 and R41 connectors from the No. 1 ultrasonic sensors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
R43-2 (BO) - R41-1 (BI) |
Always |
Below 1 Ω |
R43-4 (SO) - R41-3 (SI) |
||
R43-6 (EO) - R41-5 (EI) |
||
R43-2 (BO) - Body ground |
10 kΩ or higher |
|
R43-4 (SO) - Body ground |
||
R43-6 (EO) - Body ground |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
CHECK HARNESS AND CONNECTOR (REAR CENTER SENSOR RH - REAR CENTER SENSOR LH) |
(a) Disconnect the R41 and R40 connectors from the No. 1 ultrasonic sensors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
R41-2 (BO) - R40-1 (BI) |
Always |
Below 1 Ω |
R41-4 (SO) - R40-3 (SI) |
||
R41-6 (EO) - R40-5 (EI) |
||
R41-2 (BO) - Body ground |
10 kΩ or higher |
|
R41-4 (SO) - Body ground |
||
R41-6 (EO) - Body ground |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
CHECK HARNESS AND CONNECTOR (REAR CENTER SENSOR LH - REAR CORNER SENSOR LH) |
(a) Disconnect the R40 and R42 connectors from the No. 1 ultrasonic sensors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
R40-2 (BO) - R42-1 (BI) |
Always |
Below 1 Ω |
R40-4 (SO) - R42-3 (SI) |
||
R40-6 (EO) - R42-5 (EI) |
||
R40-2 (BO) - Body ground |
10 kΩ or higher |
|
R40-4 (SO) - Body ground |
||
R40-6 (EO) - Body ground |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
6. |
INSPECT NO. 1 ULTRASONIC SENSOR (REAR CORNER SENSOR RH) |
(a) Remove the No. 1 ultrasonic sensor (rear corner sensor RH) (See page
).
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG | ![]() |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR CORNER SENSOR RH) |
|
7. |
INSPECT NO. 1 ULTRASONIC SENSOR (REAR CENTER SENSOR RH) |
(a) Remove the No. 1 ultrasonic sensor (rear center sensor RH) (See page
).
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG | ![]() |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR CENTER SENSOR RH) |
|
8. |
INSPECT NO. 1 ULTRASONIC SENSOR (REAR CENTER SENSOR LH) |
(a) Remove the No. 1 ultrasonic sensor (rear center sensor LH) (See page
).
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG | ![]() |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR CENTER SENSOR LH) |
|
9. |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR CORNER SENSOR RH) |
|
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 (REAR CORNER SENSOR RH WAS DEFECTIVE) |
|
11. |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR CENTER SENSOR RH) |
|
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 (REAR CENTER SENSOR RH WAS DEFECTIVE) |
|
13. |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR CENTER SENSOR LH) |
|
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 (REAR CENTER SENSOR LH WAS DEFECTIVE) |
|
15. |
REPLACE NO. 1 ULTRASONIC SENSOR (REAR CORNER SENSOR LH) |
|
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 (REAR CORNER SENSOR LH WAS DEFECTIVE) |
Inspection
INSPECTION
PROCEDURE
1. INSPECT FUEL PUMP ASSEMBLY
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Condition
Specified Condition
1 - 2
20°C (68°F)
0.45 to 0 ...
Confirm Cellular Phone Functionality
PROCEDURE
1.
CHECK CUSTOMER'S CELLULAR PHONE COMPATIBILITY
(a) Check if the cellular phone is compatible (Refer to http://www.toyota.com/entune/).
Result
Result
Proceed to
Cellular phone is compatible
A
...
Installation
INSTALLATION
PROCEDURE
1. INSTALL WATER INLET WITH THERMOSTAT SUB-ASSEMBLY
(a) Install a new gasket to the water inlet with thermostat sub-assembly.
(b) Install the water inlet with thermostat sub-assembly to the timing chain
cover assembly with the 2 bolts and nut.
Torque:
10 N·m {102 kgf ...