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Mitsubishi Montero (1998+). Manual - part 75

CRUISE CONTROL SYSTEM

1998 Mitsubishi Montero

1998 ACCESSORIES & EQUIPMENT

Mitsubishi - Cruise Control Systems

Montero

DESCRIPTION & OPERATION

WARNING: Deactivate air bag system before performing any service

operation. See AIR BAG RESTRAINT SYSTEMS article. Do not

apply electrical power to any component on steering column

without first deactivating air bag system. Air bag may

deploy.

Cruise control system is electronically and vacuum

controlled. System components include a control unit, actuator, vacuum

pump, cruise control switch, clutch pedal position switch (M/T),

cruise indicator light, diode, Park/Neutral (P/N) switch (A/T),

stoplight switch, vehicle speed sensor and A/T control unit (if

equipped).

System has self-diagnostic capability. When self-diagnostic

mode is activated, each switch and sensor is checked for defects. When

cruise control system has been canceled without using a normal cancel

method, a trouble code will be set and stored in control unit. Trouble

codes can be retrieved to help determine which circuit is

malfunctioning.

COMPONENT LOCATIONS

COMPONENT LOCATIONS TABLE

Component Location

Cruise Control ECU .............. Behind Dash, On Steering

Column Bracket

Data Link Connector (DLC) ....... Under Left Side Of Dash,

Near Steering Column

Vehicle Speed Sensor ........... On Speedometer Assembly &

On Transmission

Throttle Position Sensor ........ Mounted On Throttle Body

ADJUSTMENTS

CRUISE CONTROL CABLE

Remove link protector. Loosen lock nut. Hold link "A" so that

it touches link "B". Adjust free play by turning adjusting nut until

free play is.04-.08" (1-2 mm). Tighten lock nut. See Fig. 1 or 2.

Fig. 1: Adjusting Cruise Control Cable (Except California)

Courtesy of Mitsubishi Motor Sales of America

Fig. 2: Adjusting Cruise Control Cable (California)

Courtesy of Mitsubishi Motor Sales of America

TROUBLE SHOOTING

* PLEASE READ THIS FIRST *

NOTE: For further trouble shooting information, see INPUT

INSPECTION CHART. See Fig. 3. See

INSPECTION CHART FOR TROUBLE SYMPTOMS table under SYMPTOM

TESTS.

PRELIMINARY CHECKS

Inspect vacuum pump, linkage assembly, actuator, cables and

vacuum hoses. Ensure linkage and cables move smoothly. Ensure cables

do not have excessive slack or tension.

CRUISE CONTROL SWITCH FUNCTION TEST

NOTE: If vehicle speed decreases about 9 MPH less than the set

speed, set speed will be canceled. Speed will not set beyond

system limit of 124 MPH.

1) Cruise control switch is part of multifunction switch

mounted on steering column. To operate cruise control system, turn

ignition on. Turn cruise control switch to ON position. Ensure switch

indicator light comes on.

2) With cruise control switch in ON position, drive vehicle

at least 25 MPH. Press and release SET button. Vehicle speed should

stay at set speed. Instrument cluster cruise indicator light should

come on. To increase set speed, turn control switch to RESUME position

and hold until new set speed is reached.

3) To lower set speed, press SET button and hold until new

set speed is reached. To return to set speed after cancellation, move

resume switch to ON position. Vehicle speed should return to previous

setting before cancellation. Set speed should cancel when any of the

following occurs:

* Brake pedal is depressed.

* Cruise control main switch is turned to OFF position.

* Ignition switch is turned to OFF position.

* Transmission is shifted to Neutral.

SYSTEM CANCELS OR WILL NOT RESET AFTER CANCELLATION

1) Check for trouble codes. See RETRIEVING CODES under SELF-

DIAGNOSTIC SYSTEM. If no trouble codes are stored, ensure cruise

control can be set.

2) If cruise control can be set, system may have canceled due

to driving on steep hills, or a loose wiring connection. If cruise

control still cannot be set, perform SYSTEM INPUT TESTS under SYMPTOMS

TESTS.

3) If SYSTEM INPUT TESTS check okay, check vacuum pump

circuit. See CODE 11 under DIAGNOSTIC TESTS. If SYSTEM INPUT TESTS do

not check okay, see INPUT INSPECTION CHART. See Fig. 3.

SYMPTOM TESTS

SYSTEM INPUT TESTS

1) System input tests should be performed if no trouble codes

are stored when performing RETRIEVING CODES under SELF-DIAGNOSTIC

SYSTEM. System input tests cycle each cruise control switch and

sensor.

2) Use scan tool for system input check according to

operating instructions provided with scan tool. Connect leads of

analog voltmeter between cruise control terminal and ground terminal

of data link connector. See Fig. 35.

3) Turn ignition on. To display results of input check, move

cruise control SET switch to ON position. Then turn MAIN switch to ON

position. Within one second, activate RESUME switch. Codes will

display if circuit tested is okay. See Fig. 3.

Fig. 3: Input Inspection Chart

Courtesy of Mitsubishi Motor Sales of America

INSPECTION CHART FOR TROUBLE SYMPTOMS TABLE

Trouble Symptom Perform Test No.

Communication With Scan Tool Not Possible

(Communication With All Systems Not Possible) ........ 1

Communication With Cruise Control ECU Not Possible ..... 2

Diagnostic Inspection Possible/Input Inspection

Not Possible ......................................... 3

Cruise Control Does Not Cancel

With Brake Pedal Depressed ........................... 4

With Select Lever In Neutral ......................... 5

With CANCEL Switch ON ................................ 6

Diagnosis Display Normal/Cruise Control Will Not Set ... 7

Cruise Control Cannot Be Set ........................... 8

Hunting Occurs At Set Speed ............................ 9

With Cruise Control Main Switch ON,

Switch Indicator Does Not Illuminate

(Cruise Control Operation Normal) .................. 10

Cruise Control Main Switch Illumination Light

Does Not Illuminate ................................. 11

Indicator Light Inside Combination Meter

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