Hydraulic Unit Check

Required Special Tools: 

• MB991958: Scan Tool (MUT-III Sub Assembly)
  • MB991824: Vehicle Communication Interface
  • MB991827: MUT-III USB Cable
  • MB991911: MUT-III Main Harness B

1. Jack up the vehicle. Then support the vehicle with rigid racks at the specified jack-up points or place the front or rear wheels on the rollers of the braking force tester.
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.

   CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
3. Connect scan tool MB991958 to the data link connector.
   Fig 1: Connecting Scan Tool To Data Link Connector

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
4. Turn the ignition switch to the "ON" position.
5. Select "Interactive Diagnosis" from the start-up screen.
6. Select "System select."
7. Choose "TCL" from the "CHASSIS" tab.
8. Select "MITSUBISHI."
9. Select "Actuator Test."
10. Choose an appropriate item and select the "OK" button.
    NOTE: The TCL system will switch to the scan tool mode and the ABS warning light will illuminate.
    NOTE: When the TCL has been interrupted by the fail-safe function, scan tool MB991958 actuator testing cannot be used.
11. Turn the wheel by hand and check the change in braking force. Use a braking force tester. The braking force reading value should change when the actuator test is carried out. The result should be as shown in the diagram above.
    Fig 2: Scan Tool - Actuator Test Graph

    Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
12. If the result of inspection is abnormal, replace the hydraulic unit. (Refer to HYDRAULIC UNIT .)