1998 MITSUBISHI MONTERO Service Manual

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








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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









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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









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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

Does Not Illuminate
(Cruise Control Operation Normal) .................. 12









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Fig. 4: Identifying Cruise Control Circuit Connector Terminals:
IOD Or Storage Connector (A-09X)
Courtesy of Mitsubishi Motor Sales of America
Fig. 5: Identifying Cruise Control Circuit Connector Terminals:
Cruise Control Actuator Connector (A-57 Or A-95)
Courtesy of Mitsubishi Motor Sales of America

Fig. 6: Identifying Cruise Control Circuit Connector Terminals:
Vacuum Pump Connector (A-105)
Courtesy of Mitsubishi Motor Sales of America

Fig. 7: Identifying Cruise Control Circuit Connector Terminals:
Park/Neutral Switch Connector (B-08)
Courtesy of Mitsubishi Motor Sales of America
Fig. 8: Identifying Cruise Control Circuit Connector Terminals:
Cruise Control Main Switch Connector (C-01)
Courtesy of Mitsubishi Motor Sales of America

Fig. 9: Identifying Cruise Control Circuit Connector Terminals:
Combination Meter Connector (C-04)
Courtesy of Mitsubishi Motor Sales of America
Fig. 10: Identifying Cruise Control Circuit Connector Terminals:
Combination Meter Connector (C-06)
Courtesy of Mitsubishi Motor Sales of America