Chart C Valve Cycling During Normal Stops

Chart C Valve Cycling During Normal Stops:

Chart C Valve Cycling During Normal Stops:

CHART TEST DESCRIPTION
Number(s) below refer to circled number(s) on the diagnostic chart.
1. Checks if valve activation due to erroneous electrical "noise" induced into wheel speed sensor circuits.
2. The wheel speed sensor output should gradually increase with vehicle speed. There should be no skips or jumps. All four wheel speed sensor outputs should be identical. On a slow down, one of the signals may drop off faster than the others, indicating a lock-up condition or a problem with the speed sensor or its wiring.