Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 807

35B-18
HYDRAULIC UNIT CHECK
Caution
Turn the ignition switch off before connecting or disconnecting the MUT-II.
1. Jack up the vehicle and support the vehicle with rigid racks placed at the specified jack-up points
or place the wheels which are checked on the rollers of the braking force tester.
Caution
(1) The roller of the braking force tester and the tyre should be dry during testing.
(2) When testing the front brakes, apply the parking brake, and when testing the rear brakes,
stop the front wheels by chocking them.
2. Release the parking brake, and feel the drag force (drag torque) on each road wheel.
When using the braking force tester, take a reading of the brake drag force.
3. Turn the ignition switch to the OFF position and set the MUT-II.
4. After checking that the selector lever is in neutral, start the engine.
NOTE
(1) At this time, the ABS system will switch to the MUT-II mode and the ABS warning lamp will illuminate.
(2) When the ABS has been interrupted by the fail-safe function, the MUT-II actuator testing cannot
be used.
5. Use the MUT-II to force-drive the actuator.
6. Turn the wheel by hand and check the change in braking force when the brake pedal is depressed.
When using the braking force tester, depress the brake pedal until the braking force is at the following
values, and check that the braking force changes to the brake drag force inspected in step 2 when
the actuator is force-driven.
Front wheel
Rear wheel
The result should be as shown in the following diagram.
7. If the result of inspection is abnormal, correct according to the "Diagnosis Table".
Pedal operation
Solenoid valve
position
Checking the
brake force
ABS <2WD> –
Depressed
Released
Increase in pressure
Steady pressure
Reduction in pressure (when not working)
Lock
Drag force when the pedal is free
On-vehicle Service
785 – 981 N
294 – 490 N
3 seconds
MUT-II actuator test
(Item No. 01, 02, 03, 04) start
3 seconds
6 seconds