OBD System Description

OBD System Description

ESP(R) control module built in ESP(R) hydraulic unit/ control module assembly has the following functions.

Self-Diagnosis Function

ESP(R) hydraulic unit / control module assembly monitors each input and output signals. When ESP(R) hydraulic unit / control module assembly detects any malfunction, ABS warning light (1), EBD warning light (brake warning light) (2), ESP(R) warning light (3), and/or ESP(R) OFF light (4) are turned ON to indicate the abnormality to driver.

- When ignition mode of the keyless push start system is changed to "ON", ABS warning light, EBD warning light (brake warning light), ESP(R) warning light and ESP(R) OFF light turn ON for 2 seconds to check its circuit.
- When no abnormality is detected (the system is in good condition), these lights turn OFF after 2 seconds. However, when parking brake is operated, EBD warning light (brake warning light) remains ON.
- When an abnormality in the system is detected, ABS warning light, EBD warning light (brake warning light), ESP(R) warning light and/or ESP(R) OFF light are turned ON and DTC is stored in ESP(R) hydraulic unit / control module assembly.






Fail-Safe Mode

If ESP(R) hydraulic unit / control module assembly stores a DTC, ESP(R) hydraulic unit / control module assembly stops ABS, EBD, traction control function and/or stability control function corresponding to the faulty area. It is possible to confirm the stopped function(s) by the warning / indicator lights in combination meter. Warning / Indicator Light Description