H14 Blocked Isolation Orifice

- Disconnect antilock electronic control module harness connector.

- Raise the vehicle on a hoist far enough to allow all wheels to spin freely.

- Start the vehicle, place in DRIVE and allow rear wheels to spin at idle for at least 30 seconds.

- Apply the brake pedal with the force of a normal traffic stop.

- Do the rear wheels react uncharacteristically slowly or continue to spin?

YES -- Reconnect antilock electronic control module. Replace RABS valve. Go to Pinpoint Test S to Verify concern is resolved.

NO -- Rear wheels stop normally. RABS valve is OK. Reconnect antilock electronic control module. Go to Pinpoint Test T.