Note on Intermittents

Intermittent failures in the anti-lock brake system may be difficult to accurately diagnosis. The ABS trouble codes which may be stored by the EBCM are not specifically designated as ``CURRENT'' or ``HISTORY'' codes as are BCM and ECM codes. These codes, however, can be helpful in diagnosing intermittent conditions. If an intermittent condition is to be diagnosed, the ABS self-diagnostic system can be used in the following manner to help isolate the suspected circuit:
1. First, display and clear any ABS trouble codes which may be present in the EBCM.
2. Test drive the vehicle, attempting to repeat the failure condition.
3. After duplicating the condition, stop the vehicle and display any ABS trouble codes which may have been stored.
4. If no trouble codes were stored, it may become necessary to refer to DIAGNOSTIC CHARTS/ABS SYMPTOM DIAGNOSIS.