Symptom Related Diagnostic Procedures

Fig. 19 Diagnostic Lamp Symptom Chart:

If the quick test checks and ABS quick check sheet procedure does not isolate the symptom, it will be necessary to check the operation of the brake and anti-lock warning lamps. Observe the lamps and compare their On/Off operation to the conditions listed. Once the actual warning lamp pattern has been matched to one of the conditions listed in the chart, perform the specific Pinpoint Test diagnostic procedure. Before connecting the 32 pin connector harness to adapter T87P-50-ALA, ensure that the contacts of the harness are properly installed and are not damaged.