Mitsubishi Montero (1991+). Manual - part 153

         4) If continuity is present between motor terminals at blower

connector, check ground circuit. If ground circuit is okay, check for

blower motor malfunction. Disconnect blower motor terminals. Connect

blower motor terminals directly to battery. Blower motor should

operate smoothly.

         5) Reverse blower motor terminal polarity to battery. Blower

motor should operate smoothly in reverse direction. If blower motor

does not operate as specified, replace blower motor.

         BLOWER MOTOR RELAY TEST

NOTE:    Pickup and Ram-50 blower motors do not have blower motor

         relays.

         1) Remove blower motor relay from fuse/relay block. Connect

an ohmmeter between terminals No. 1 and 3. See  Fig. 7. Continuity

should not be present.

         2) Connect an ohmmeter between terminals No. 2 and 4.

Continuity should be present. Connect 12-volt battery positive lead to

terminal No. 2 and negative lead to terminal No. 4. See  Fig. 7.

         3) Connect an ohmmeter between terminals No. 1 and 3.

Continuity should be present. If continuity is not as specified in any

step, replace relay.

Fig. 7:  Identifying Blower Relay Terminals

Courtesy of Mitsubishi Motor Sales of America.

         BLOWER MOTOR RESISTOR TEST

         Disconnect harness connector from resistor terminals. Using

an ohmmeter, check resistance between terminals indicated in BLOWER

MOTOR RESISTOR RESISTANCE table. See Fig. 8. If resistance is not as

shown, replace resistor.

BLOWER MOTOR RESISTOR RESISTANCE TABLE

Terminal Nos.                                 Ohms

Montero

  1-2  .....................................  1.22

  1-3  ......................................  .41

  1-4  .....................................  2.25

  1-5  ........................................  0

Pickup & Ram-50

  1-2  .....................................  1.19

  1-3  ......................................  .50

  1-4  .....................................  2.33

  1-5  ........................................  0

Fig. 8:  Identifying Blower Resistor Terminals

Courtesy of Mitsubishi Motor Sales of America.

         REMOVAL & INSTALLATION

         HEATER CORE

         Removal (Montero)

         1) Move temperature control lever to WARM position. Drain

coolant from vehicle. Disconnect heater hoses from heater unit. See

Fig. 1.

         2) Remove lap heater ducts. Remove hood release bracket.

Using screwdriver, release tabs and remove left and right demister

grilles. Remove glove box frame attaching screws, and remove glove

box. Remove passenger lap heater duct.

         3) Using screwdriver and shop towel, carefully pry at top

center of instrument cluster cover, and remove cover. Remove 2 screws

at bottom of instrument panel and one bolt at top of instrument panel.

Gently pull instrument cluster out, and disconnect speedometer cable

and electrical connections. Remove instrument cluster.

         4) Remove 4 screws, and disconnect electrical connections on

back of instrument cluster. Remove instrument cluster. Handle

instrument cluster carefully. Instrument cluster can be damaged if

dropped.

         5) Remove center console knobs and side screw plugs. Remove

screws, disconnect electrical connections and remove console. Remove 6

bolts and console bracket (center dash reinforcement). Disconnect

radio connections while removing console bracket.

         6) Remove horn pad and steering wheel retaining nut. Mark

steering wheel and steering shaft for reassembly reference. Using

steering wheel puller, remove steering wheel.

         7) Using screwdriver, carefully pry out dash plug at upper

center of dash panel. Remove 3 upper dash mounting nuts, one upper

screw above steering column, and 2 lower mounting screws. Remove dash

panel.

         8) Remove control cables at heater unit. Remove heater unit

attaching screws. Remove heater ducts. Remove heater unit. Remove

heater control lever arm.

         9) Remove heater control valve cover. Remove heater pipe and

heater control valve. Disconnect control arm linkage. Remove control

arm. Remove heater core by moving it sideways.

         Installation

         1) To install, reverse removal procedure. Insert heater hoses

fully into pipes, and clamp securely to prevent leaks. Connect heater

hoses with 1-1.2" (25-30 mm) overlap on outlet.

         2) When filling radiator with coolant, first open heater

control valve fully and run engine to circulate coolant and discharge

air from inside heater and engine cooling system. Stop engine, and add

coolant.

         3) Adjust all control cables. When installing heater hose

grommets, apply sealer. After installing heater control assembly,

ensure each lever operates smoothly.

         Removal (Pickup & Ram-50)

         1) Disconnect battery ground cable. Place heater control

lever to far right. Drain coolant. Using trim stick, pry out hazard

switch and remove electrical connection. Remove 4 instrument cluster

cover screws, and remove cover. Remove 4 instrument cluster screws.

Tilt instrument cluster out, and disconnect speedometer cable and

electrical connections. Remove cluster.

         2) Remove fuse box cover and fuse box assembly. Remove glove

box. Remove defroster air ducts. Disconnect heater control cables.

Using trim stick, pry under and remove speaker grilles. Remove clock

or coin box in center of dash. Remove center dash hole cover (located

above clock).

         3) Remove 2 center support cover screws, and remove cover.

Remove shift knob and 6 console attaching screws. Remove console.

Ensure all electrical connections are free of dash panel. Remove 3 top

nuts, one bolt above steering column, and side and lower attaching

screws. Remove dash panel.

         4) Remove blower duct, center duct and defroster ducts. See

Fig. 2. Disconnect heater wiring harness from heater unit. Remove

heater center support brackets. Remove heater unit. Remove heater core

cover plate and joint hose. Remove heater core from heater unit.

         Installation

         1) To install, reverse removal procedure. Insert heater hoses

fully into pipes, and clamp securely to prevent leaks.

         2) When filling radiator with coolant, first open heater

control valve fully and run engine to circulate coolant and discharge

air from inside heater and engine cooling system. Stop engine, and add

coolant.

         3) Adjust all control cables. When installing heater hose

grommets, apply sealer. After installing heater control assembly,

ensure each lever operates smoothly.

         HEATER CONTROL PANEL

         Removal (Montero)

         1) Remove heater control knob and heater fan switch knob.

Remove center console. Remove defroster nozzle at temperature control

cable side.

         2) Remove lap heater duct and glove box stopper, and push

glove box forward and down. Disconnect inside/outside control cable

from blower assembly.

         3) Disconnect control cables from heater unit. Remove heater

control panel mounting screws, and pull out panel slightly. Disconnect

heater fan switch harness connectors. Remove heater control panel.

Remove heater fan switch from heater control panel.

         Installation

         1) Place air outlet change-over lever at closed position.

With heater side air outlet change-over damper lever in position,

connect inner cable to lever, and secure cable casing using clips.

         2) Place heater control lever at OFF position. With heater

control lever in position, connect inner cable to lever, and secure

cable casing using clips.

         3) Place inside/outside air change-over lever at INSIDE

position. With heater side inside/outside air change-over damper lever

in position, connect inner cable to lever, and secure cable casing

using clips.

         4) Set control lever to each position to check for correct

operation. If lever does not operate correctly, adjust by moving outer

wire at clipped point. Ensure each control lever moves smoothly. If

any noise or stiff movement exists, apply multipurpose grease to all

moving parts.

NOTE:    When mounting heater control panel to instrument panel,

         tighten upper bolts to instrument panel so they also secure

         center panel.

         Removal & Installation (Pickup & Ram-50)

         Remove cluster panel. Remove all control cables at heater.

Remove heater control panel. To install, reverse removal procedure.

Adjust cables as necessary.

         WIRING DIAGRAMS