Fig. 6: Testing ABS Control Module (3 Of 3)
Courtesy of MAZDA MOTORS CORP.
HYDRAULIC UNIT
On-Vehicle Inspection
1. Ensure all diagnostic trouble codes have been cleared and battery is fully charged. See CLEARING
CODES under DIAGNOSIS & TESTING. Turn ignition on and check if ABS warning light goes out
after 2-4 seconds. If ABS warning light remains illuminated, ABS control module has detected a failure
and will not activate hydraulic unit. See DIAGNOSIS & TESTING
.
2. Turn ignition off. Ensure vehicle is on level surface. Raise and support vehicle. Place transmission in
Neutral. Release parking brake. Rotate wheels by hand and check for brake drag. Connect a jumper wire
between TBS terminal and GND terminal of data link connector. See Fig. 1
. Depress brake pedal and
have an assistant attempt to rotate right front wheel. Wheel should not rotate.
3. With brake pedal still depressed, turn ignition on. Brake should be momentarily released (about .5
second) and wheel should turn when pressure reduction operates. Check operation of remaining wheels
using same procedure beginning with left front, right rear, then left rear wheels.
4. If all wheels operate as specified, the following systems are operating properly.
Brake piping to hydraulic unit.
Braking system, including hydraulic unit.
Hydraulic unit electrical system (solenoid, pump motor, etc.)
1997 Mazda MX-5 Miata
ANTI-LOCK BRAKE SYSTEM 1997 BRAKES Mazda - Anti-Lock
Microsoft
Sunday, July 05, 2009 1:48:48 PMPage 12 © 2005 Mitchell Repair Information Company, LLC.
