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Troubleshooting Precautions ABS Indicator Light: The ABS indicator light comes on for 3 seconds and then goes off when the control unit detects no problem during the ini- control unit starts to check for pump overrun, etc. during the initial diagnosis. The ABS indicator light comes on, and the ABS control unit memorizes the diagnostic trouble code (DTC) under certain conditions. The parking brake is applied for more than 30 seconds while the vehicle is being driven. (DTC 2-1) muddy, snowy, or sandy road. (DTC 4-8) Tire adhesion is lost due to excessive cornering speed. (DTC 5, 5-4, 5-8) NOTE: If there is any trouble in the system, the ABS indicator light comes on during driving. Diagnostic Trouble Code (DTC): When the control unit detects a problem and the ABS indicator light comes on, the control unit memorizes the DTC. register. If another problem occurs, or the same problem occurs again, the control unit moves the first DTC to the next same problem occurs three times, the same DTC is stored in all memory registers. (Refer to the Symptom-to-System Chart for diagnostic period.) The most recent DTC is indicated first, and the oldest DTC is indicated last. Self-diagnosis: There are three self-diagnoses described below. Initial diagnosis: Performed right after the engine starts until the ABS indicator light goes off. engine stops. Individual part/system diagnosis: Diagnosis about a specific part/system under its operating conditions. The CPU (central processing unit) controls the following when it detects a problem during self-diagnosis: Turns the ABS indicator light ON. Stops the ABS control. After the DTC is stored in the control unit, the CPU stops self-diagnosis. Main Menu Table of Contents |