Troubleshooting

Self-diagnosis
1. Self diagnosis can be classified into two categories:
A. Initial diagnosis:
Performed right after the engine starts and until the ABS indicator goes off.
B. Regular diagnosis:
Performed right after the initial diagnosis until the ignition switch is turned OFF.
2. When a problem is detected by self-diagnosis, the system:
A. Turns the solenoid valve OFF
B. Turns the pump motor OFF
C. Turns the ABS indicator ON

How to troubleshoot ABS DTC
The troubleshooting flowchart procedures assume that the cause of the problem is still present and the ABS indicator is still on. Following the flowchart when the ABS indicator does not come on can result in incorrect diagnosis.
1. Question the customer about the conditions when the problem occurred, and try to reproduce the same conditions for troubleshooting. Find out when the ABS indicator came on, such as during initial diagnosis, during ABS control, after ABS control, when vehicle speed was at a certain speed, etc.
2. When the ABS indicator does not come on during the test-drive, but troubleshooting is performed based on the DTC. Check for loose connectors, poor contact of the terminals, etc. before you start troubleshooting.
3. After troubleshooting, erase the DTC and test-drive the vehicle. Be sure the ABS indicator does not come on.