Toyota Corolla Cross: ABS Malfunction (C1296)
DESCRIPTION
When a malfunction has occurred in the speed sensor circuit or the yaw rate and acceleration sensor circuit, the 4WD ECU assembly stores DTC C1296.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C1296 |
ABS Malfunction |
|
|
WIRING DIAGRAM
PROCEDURE
|
1. |
CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) |
(a) Clear the DTC.
Chassis > Brake/EPB > Clear DTCs(b) Turn the ignition switch off.
(c) Drive the vehicle, accelerate to a speed of 20 km/h (12 mph) or more, and check if the speed sensor DTC (electronically controlled brake system DTC) is output.
Chassis > Brake/EPB > Trouble Codes|
Result |
Proceed to |
|---|---|
|
Electronically controlled brake system DTC (speed sensor or acceleration sensor DTC) is not output |
A |
|
Electronically controlled brake system DTC (speed sensor or acceleration sensor DTC) is output |
B |
HINT:
When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.
| B | .gif) |
GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM |
|
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|
2. |
READ VALUE USING GTS (WHEEL SPEED) |
(a) Read the value displayed on the GTS.
Chassis > Four Wheel Drive > Data List|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
FR Wheel Speed |
Front wheel speed sensor RH reading |
Min.: 0 km/h (0 mph) Max.: 326 km/h (203 mph) |
Vehicle stopped: 0 km/h (0 mph) |
No large fluctuations when driving at a constant speed. |
|
FL Wheel Speed |
Front wheel speed sensor LH reading |
Min.: 0 km/h (0 mph) Max.: 326 km/h (203 mph) |
Vehicle stopped: 0 km/h (0 mph) |
No large fluctuations when driving at a constant speed. |
|
RR Wheel Speed |
Rear wheel speed sensor RH reading |
Min.: 0 km/h (0 mph) Max.: 326 km/h (203 mph) |
Vehicle stopped: 0 km/h (0 mph) |
No large fluctuations when driving at a constant speed. |
|
RL Wheel Speed |
Rear wheel speed sensor LH reading |
Min.: 0 km/h (0 mph) Max.: 326 km/h (203 mph) |
Vehicle stopped: 0 km/h (0 mph) |
No large fluctuations when driving at a constant speed. |
|
Tester Display |
|---|
|
FR Wheel Speed |
|
FL Wheel Speed |
|
RR Wheel Speed |
|
RL Wheel Speed |
OK:
The speed value output from the speed sensor displayed on the GTS is the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).
| NG | |
GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM |
|
|
3. |
READ VALUE USING GTS (FORWARD AND REARWARD G) |
(a) Read the value displayed on the GTS.
Chassis > Four Wheel Drive|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Forward and Rearward G |
Forward and Rearward G |
Min.: -25.10 m/s2 Max.: 24.90 m/s2 |
Approximately 0 +/-0.13 m/s2 while stationary |
Changes in proportion with acceleration during acceleration/deceleration. |
|
Tester Display |
|---|
|
Forward and Rearward G |
OK:
The yaw rate and acceleration sensor (airbag ECU assembly) output value is normal.
| OK | |
REPLACE 4WD ECU ASSEMBLY |
| NG | |
GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM |
READ NEXT:
Steering Angle Sensor (C1297)
DESCRIPTION
The 4WD ECU assembly receives signals from the steering sensor, and thereby detects
the steering angle of the steering wheel assembly to determine when the vehicle
is turning.
When a
Linear Solenoid (C1298)
DESCRIPTION
Based on the signals from each sensor, the 4WD ECU assembly controls the transmitted
torque of the 4WD linear solenoid (transmission coupling assembly). This enables
driving force dis
Cancellation of 4WD Control (C1299)
DESCRIPTION
While driving, if the heat generated by the transmission coupling assembly exceeds
a certain amount or if the estimated oil temperature of the transfer exceeds a certain
amount, the 4
SEE MORE:
Lost Communication with ECM/PCM "A" Missing Message (U010087,U012687,U012987,U014087,U029387,U111087)
DESCRIPTION
These DTCs are stored if there is a malfunction in the CAN communication
system connected to the blind spot monitor sensor.
HINT:
If CAN communication system DTCs are stored, they may also be stored
for other systems.
DTC No.
Detection Item
DTC De
Emission inspection and maintenance
(I/M) programs
Some states have vehicle
emission inspection programs
which include OBD
(On Board Diagnostics)
checks. The OBD system
monitors the operation of
the emission control system.
If the malfunction indicator
lamp comes on
The OBD system determines
that a problem exists somewhere
in the emission control
sy
