DESCRIPTION
The skid control ECU (brake actuator assembly) measures the speed of each wheel by receiving signals from the speed sensors. These signals are used for recognizing whether all 4 wheels are operating properly. Therefore, all wheel signals must indicate the same speed.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
---|---|---|---|
C1337 |
Diameter of the Tire is not Uniform |
The following occurs in 3 consecutive trips: At a vehicle speed of 20 km/h (12 mph) or more, there is a difference of 20% or more in the average speed between the front wheels and rear wheels for 20 seconds or more. |
|
CAUTION / NOTICE / HINT
NOTICE:
When replacing the skid control ECU (brake actuator assembly), perform zero point calibration and store system information (See page ).
PROCEDURE
1. |
CHECK DTC |
(a) Check if any DTCs relating to the speed sensor circuit are output (See page ).
Result
Result |
Proceed to |
---|---|
DTC is not output |
A |
DTC is output |
B |
B |
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS |
|
2. |
CHECK TIRE SIZE |
(a) Check the tire size and condition of all 4 wheels.
OK:
All 4 tires are the same size and in the same condition.
NG |
REPLACE TIRES SO THAT ALL 4 TIRES ARE SAME SIZE AND IN THE SAME CONDITION |
|
3. |
RECONFIRM DTC |
(a) Clear the DTC (See page ).
(b) Turn the ignition switch off.
(c) Perform the following 3 times:
Turn the ignition switch to ON and start the engine, drive the vehicle at a speed of 30 km/h (19 mph) or more for at least 30 seconds, and then stop the vehicle and turn the ignition switch off.
(d) Check if the same DTC is output (See page ).
Result
Result |
Proceed to |
---|---|
DTC is output |
A |
DTC is not output |
B |
A |
REPLACE BRAKE ACTUATOR ASSEMBLY |
B |
USE SIMULATION METHOD TO CHECK |
Components
COMPONENTS
ILLUSTRATION
HINT:
The following specifications are for BD22AN (w/ Differential Lock). BD22AN differentials
are equipped with M10 rear differential carrier to rear axel housing fasteners.
ILLUSTRATION
ILLUSTRATION
...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use this procedure to troubleshoot the theft deterrent system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
2.
...
Acceleration Sensor Stuck Malfunction (C1232,C1243,C1245,C1279)
DESCRIPTION
The skid control ECU (master cylinder solenoid) receives signals from the yaw
rate and acceleration (airbag sensor assembly) via the CAN communication system.
The airbag sensor assembly has a built-in yaw rate and acceleration sensor and
detects the vehicle's condition using 2 ...