Toyota 4Runner: Steering Angle Sensor Unusual Bank Angle Detected (C1440)
DESCRIPTION
If the skid control ECU determines that the vehicle is being driven at a steep bank angle, the skid control ECU stores DTC C1440 while VSC operation is temporarily disabled.
It is not a malfunction if the system and sensor circuits are normal and if the normal VSC operation resumes, which automatically clears DTC C1440, after the vehicle is returned to a normal position.
HINT:
DTC C1440 and the yaw rate and acceleration sensor DTC are stored when the skid control ECU determines that the vehicle is being driven at a steep bank angle and either of the following conditions is met:
- The yaw rate and acceleration sensor is installed at an angle.
- The yaw rate and acceleration sensor signal output is stuck.
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
C1440 |
Driving at a steep bank angle. |
Yaw rate and acceleration sensor |
PROCEDURE
|
1. |
CHECK DTC |
(a) Clear the DTCs (See page .gif)
).
(b) Perform a road test.
(c) Check if the same DTC is output (See page
).
|
Result |
Proceed to |
|---|---|
|
DTC C1440 is output |
A |
|
DTC C1440 is not output |
B |
|
Yaw rate and acceleration sensor DTC is output |
C |
| B | .gif) |
END |
| C | |
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS |
|
.gif)
|
2. |
CLEAR DTC |
(a) Clear the DTCs (See page ).
HINT:
- If the skid control ECU determines that the vehicle is being driven at a steep bank angle, the skid control ECU stores DTC C1440 while VSC operation is temporarily disabled.
- It is not a malfunction if the system and sensor circuits are normal and if the normal VSC operation resumes, which automatically clears DTC C1440, after the vehicle is returned to a normal position.
| NEXT | |
END |
Steering Angle Sensor Initialization Incomplete (C1439,C1445)
DESCRIPTION
The skid control ECU acquires steering angle sensor zero point every time the
ignition switch is turned to ON and the vehicle is driven at 40 km/h (25 mph) or
more for approximately 1 ...
Invalid Data Received from Deceleration Sensor (C1442,C1443)
DESCRIPTION
The skid control ECU receives signals from the yaw rate and acceleration sensor
via the CAN communication system.
DTC Code
DTC Detection Condition
Trou ...
Other materials about Toyota 4Runner:
How To Proceed With Troubleshooting
PROCEDURE
1.
CHECK TIRE AND WHEEL SYSTEM
DIAGNOSIS OF IRREGULAR TIRE WEAR
GO TO STEP 9
DIAGNOSIS OF TIRE VIBRATION
2.
...
Inspection
INSPECTION
PROCEDURE
1. CHECK BRAKE CYLINDER AND PISTON
(a) Check the cylinder bore and piston for rust or scoring.
If necessary, replace the disc brake cylinder assembly.
2. CHECK PAD LINING THICKNESS
(a) Using a ruler, measure the pad lining ...
0.0097