Mitsubishi Outlander: On-vehicle Service

WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT

Required Special Tools:

• MB991709: Wiring harness set

The relevant wheel, on which the wheel speed sensor is fitted, should be free to run.

1. Remove the wheel speed sensor connector to be checked.

CAUTION For precise measurement, do not connect to the wheel speed sensor-side connector and the wiring harness side connector terminal No.1.

2. Use the special tool test harness (MB991709) to connect a multimeter between the wheel speed sensor-side connector and the wiring harness connector terminal No.2.

3. Turn the ignition switch to the "ON" position.

CAUTION Do not rotate the wheel too quickly. Output current changes significantly as the wheel speed detection magnetic encoder comes near or goes away from the wheel speed sensor.

4. Rotate the wheel, on which the wheel speed sensor is fitted, quite slowly to measure the output current with the multimeter.

Standard value: 5.9 to 8.4 mA or 11.8 to 16.8 mA

5. If the measurement is not within the standard value, or the output current does not change in proportion to the wheel rotation, replace the wheel speed sensor.

HYDRAULIC UNIT CHECK

Required Special Tools:

• MB991958: M.U.T.-III Sub Assembly
  • MB991824: Vehicle Communication Interface (V.C.I.)
  • MB991827: M.U.T.-III USB Cable
  • MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)

1. Raise the vehicle using a jack and support the specified points with a rigid rack.

CAUTION Before connecting or disconnecting scan tool, always turn the ignition switch to the LOCK (OFF) position.

2. Before setting scan tool, turn the ignition key to the LOCK (OFF) position.

3. Confirm that the selector lever is in the "N" position, and then start the engine.

4. When carrying out the actuator tests No. 01 to 04, perform the actuator tests using scan tool while depressing the brake pedal. When carrying out the actuator tests, rotate the wheel by hands to confirm that the braking force changes.

NOTE:

• While performing the actuator test, the ABS warning light flashes at a rate of 2 Hz.
• When ABS-ECU is disabled due to the fail-safe function, the scan tool actuator test cannot be performed.
• After the actuator test has been performed, the ABS warning light and brake waning light illuminate until the ignition switch is turned to ON again or the communication between scan tool and ABS-ECU is terminated.

5. This is indicated as shown in the above.

6. When any malfunction has been found, take a necessary action according to the "Judgment Table".

Judgment Table

7. After the inspection, turn the ignition switch to the LOCK (OFF) position, and then disconnect scan tool.

Hydraulic unit installation adjustment

1. Operate the pre-removal steps for the hydraulic unit.

2. Remove all brake tubes.

3. Remove the protector.

4. Loosen the mounting bolt and nut of the hydraulic unit bracket.

5. Install all brake tubes temporarily.

6. Shake hydraulic unit to all directions with both hands to make the hydraulic unit bracket insulator fit with the unit.

7. Install the hydraulic unit bracket with mounting bolt and nut not to load the brake tube.

8. Install the protector.

9. Install all brake tubes securely.

NOTE: Install the flare nut taking care not to let the brake tube turn together.

10.Operate the post-installation steps of the hydraulic unit.

IN THE EVENT OF A DISCHARGED BATTERY

WARNING

If the ABS is not operating, the vehicle will be unstable during braking, Do not drive the vehicle with the ABS-ECU connector disconnected or with the ABS not operating.

If the engine is started using a booster cable when the battery is completely flat, and the vehicle is then driven without waiting for the battery to be recharged, the engine may misfire and it may not be possible to drive the vehicle. This is because the ABS consumes a large amount of current when carrying out its initial checks. If this happens, recharge the battery fully.

Hydraulic Unit

REMOVAL AND INSTALLATION

NOTE: ABS-ECU is located in the hydraulic unit.

Pre-removal operation

• Strut tower bar removal
• Brake fluid draining
• Intake manifold plenum removal

Post-installation operation

• Intake manifold plenum installation
• Brake fluid refilling and air bleeding
• Strut tower bar installation
• Hydraulic unit check

Removal steps

1. ABS-ECU harness connector
2. Suction pipe installation bolt
3. Wheel speed sensor harness connector connection
4. Wheel speed sensor harness clip connection
5. Brake tube connection
6. Brake tube and clip connection
7. Suction pipe, liquid pipe and clip connection
8. Hydraulic unit (ABS-ECU) and hydraulic unit bracket
9. Hydraulic unit (ABS-ECU)
10. Hydraulic unit bracket insulator
11. Hydraulic unit bracket B
12. Hydraulic unit bracket A

REMOVAL SERVICE POINT

HYDRAULIC UNIT (ABS-ECU) REMOVAL

CAUTION

• Be careful when removing the hydraulic unit because it is heavy.
• Never loosen the nuts and the bolts because the hydraulic unit cannot be disassembled.
• Do not drop or shock the hydraulic unit.
• Do not turn the hydraulic unit upside down or lay down the unit because the inner air becomes difficult to be bled.

INSTALLATION SERVICE POINT

BRAKE TUBE CONNECTION

Install the brake pipe to the hydraulic unit as shown in the figure.

1. To rear brake (RH) <Marking color: White>
2. From master cylinder (secondary) <Marking color: Yellow>
3. To front brake (LH) <Marking color: Red and white>
4. To front brake (RH) <Marking color: Orange and white>
5. From master cylinder (primary) <Marking color: Blue>
6. To rear brake (LH) <Marking color: Pink>

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