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Hydraulic Pressure Check

  1. Raise and support vehicle. Release parking brake. Ensure ignition is off. Place transaxle in NEUTRAL position. Ensure brake drag does not exist when wheels are turned by hand. Access Data Link Connector (DLC) located in engine compartment, near battery. Using jumper wire, connect terminal "M" (TBS) and terminal "E" (GND) on DLC connector. See Figure .
  2. Depress brake pedal. Have assistant verify all wheels will not rotate. With brake pedal still depressed, turn ignition on. Have assistant verify that hydraulic pressure is momentarily released. Each wheel should rotate for about .5 second. Brakes should then hold for about 1.5 seconds, then repeat release cycle.
  3. If directed to this test from QUICK TEST QT-4, ABS is functioning properly. If directed to this test from PINPOINT TEST WSS-8 and pressure reduction functions properly, fault is intermittent. Go to QUICK TEST QT-7  . If directed to this test from PINPOINT TEST SV-3 and pressure reduction functions properly, go to PINPOINT TEST WL-1  . If pressure reduction does not function properly, inspect wiring and brake lines. If no faults are found, replace hydraulic actuator assembly.
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