Mitsubishi Montero (1998+). Manual - part 37

         All switches are mounted to transfer case. See  Fig. 9.

Switches use single harness lead and ground to transfer case. See 4WD

INDICATOR SWITCH CONTINUITY CHECK table. Ensure all appropriate

grounding straps are connected to vehicle body or frame.

4WD INDICATOR SWITCH CONTINUITY CHECK

Switch              Transfer Control Lever Position      Specification

Center Differential Lock

Detection Switch  ..............  4H  .................  No Continuity

Detection Switch  .............  4HLc  ...................  Continuity

Center Differential Lock

 Operation Detection Switch  ..  4H  ..................  No Continuity

"  ...........................  4HLc  ....................  Continuity

4WD Operation

Detection Switch  ..............  2H  .................  No Continuity

Detection Switch  ..............  4H  ....................  Continuity

HI/LO Detection Switch  ......  4HLc  ....................  Continuity

"  .............................  N  ..................  No Continuity

"  ...........................  4LLc  ....................  Continuity

2WD/4WD

  Detection Switch  ............  2H  ....................  Continuity

  "  ...........................  4H  .................  No Continuity

         REAR DIFFERENTIAL CONTROL UNIT

         Remove rear seat and remove rear differential control unit.

Do not disconnect control unit harness connector. Backprobe harness

connector. Check voltage between each individual terminal and ground

terminal No. 6 (Black wire). See Figs. 14 and 15. If after all tests

have been completed system is not operating properly, substitute rear

differential control unit with known good-unit and retest.

Fig. 14:  Identifying Rear Differential Control Unit Connector

Courtesy of Mitsubishi Motor Sales of America.

Fig. 15:  Rear Differential Control Unit Pin Voltage Chart

Courtesy of Mitsubishi Motor Sales of America.

         WHEEL SPEED SENSOR (WSS)

         WSS Resistance Test

         1) Before testing WSS resistance, ensure pole piece-to-WSS

tip is clean. Check WSS pole piece for damage. If pole piece is

damaged, replace WSS.

         2) Disconnect WSS connector. Inspect WSS wiring harness for

broken and pinched wires. See WIRING DIAGRAMS. Repair harness as

necessary. If harness is okay, go to next step.

         3) Using ohmmeter, check resistance across WSS terminals.

Resistance for front WSS should be 1170-1350 ohms. Resistance for rear

WSS should be 1300-1500 ohms. If resistance is as specified, go to

GROUND CIRCUIT TEST. If resistance is not as specified, replace WSS.

         Ground Circuit Test

         Disconnect WSS wiring harness connector. Check resistance

between each WSS terminal and WSS housing. Resistance should be more

than 100,000 ohms. If resistance is not as specified, replace WSS.

         REMOVAL & INSTALLATION

         ELECTRONIC CONTROL UNIT (ECU)

         Removal & Installation

         1) ECU is located behind right rear quarter panel trim. See

Fig. 16. Disconnect negative battery cable. Remove quarter panel

mounti ng screws and trim clip.

         2) Carefully remove quarter panel trim. Disconnect ECU wiring

harness connector. Remove ECU mounting bolts/nuts and ECU. To install,

reverse removal procedure.

Fig. 16:  Locating Electronic Control Unit (ECU)

Courtesy of Mitsubishi Motor Sales of America.

         "G" SENSOR

CAUTION: DO NOT turn "G" sensor upside-down or lay unit on its side.

         DO NOT drop "G" sensor. DO NOT disassemble unit. Replace "G"

         sensor as an assembly.

         Removal & Installation

         Sensor is located under center console, near shifter. See

Fig. 10. Remove center console assembly. Disconnect sensor wiring

harnes s connector. Remove sensor. To install, reverse removal

procedure. Tighten bolts to specification. See  TORQUE SPECIFICATIONS.

         HYDRAULIC UNIT

         Removal

         Remove brakelines from hydraulic unit. Remove ABS relay box

cover. See Fig. 3. Disconnect ground wire and wiring harness

connectors from hydraulic unit. Remove hydraulic unit retaining nuts.

Carefully remove hydraulic unit.

         Installation

         To install, reverse removal procedure. Install hydraulic unit

brakelines. Ensure brakelines are installed in correct location. See

Fig. 17. Bleed brake system. See BLEEDING BRAKE SYSTEM.

Fig. 17:  Identifying Hydraulic Unit Brakeline Connections

Courtesy of Mitsubishi Motor Sales of America.

         WHEEL SPEED SENSOR (WSS)