Mitsubishi Montero Sport (2004+). Manual — part 102
ENGINE CONTROL
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ENGINE AND EMISSION CONTROL
17-3
ENGINE CONTROL
GENERAL DESCRIPTION
M1171000100200
A cable-type accelerator mechanical sus-
pended-type pedal has been adopted.
ENGINE CONTROL SYSTEM DIAGNOSIS
INTRODUCTION TO ENGINE CONTROL SYSTEM DIAGNOSIS
M1171002000191
If there is a malfunction in the engine control system,
the accelerator cable, accelerator pedal or throttle
lever may be faulty.
ENGINE CONTROL SYSTEM DIAGNOSTIC TROUBLESHOOTING STRATEGY
M1171002100217
Use these steps to plan your diagnostic strategy.
If you follow them carefully, you will be sure that you
have exhausted most of the possible ways to find an
engine control system fault.
1. Gather information from the customer.
2. Verify that the condition described by the
customer exists.
3. Find the malfunction by following the Symptom
Chart.
4. Verify that the malfunction is eliminated.
SYMPTOM CHART
M1171002200225
SYMPTOM PROCEDURES
INSPECTION PROCEDURE 1: Throttle Valve will not Fully Open or Close.
DIAGNOSIS
STEP 1. Check the accelerator cable adjustment.
Q: Is the accelerator cable properly adjusted?
YES :
Go to Step 2.
NO :
Adjust the accelerator cable by referring to
, and then go to Step 4.
STEP 2. Check the return spring.
Q: Is the return spring damaged or deformed?
YES :
Go to Step 3.
NO :
Replace, then go to Step 4.
STEP 3. Check the throttle lever.
Q: Is the throttle lever damaged or deformed?
YES :
Replace, then go to Step 4.
NO :
There is no action to be taken.
STEP 4. Retest the system.
Q: Does the throttle valve fully open and close?
YES :
This procedure is complete.
NO :
Return to Step 1.
SYMPTOM
INSPECTION PROCEDURE
REFERENCE PAGE
Throttle valve will not fully open or close.
1
Accelerator pedal operation is not smooth (over
acceleration).
2
ENGINE CONTROL
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ENGINE AND EMISSION CONTROL
17-4
INSPECTION PROCEDURE 2: Accelerator Pedal Operation is not Smooth (Over Acceleration)
DIAGNOSIS
STEP 1. Check the accelerator pedal.
Q: Is the accelerator pedal loose?
YES :
Tighten, then go to Step 4.
NO :
Go to Step 2.
STEP 2. Check the accelerator cable wiring.
Q: Is the accelerator cable routing bent sharply?
YES :
Repair, then go to Step 4.
NO :
Go to Step 3.
STEP 3. Check the accelerator cable lubricant.
Q: Is the accelerator cable lubricated sufficiently?
YES :
There is no action to be taken.
NO :
Refill or replace the lubricant, then go to
Step 4.
STEP 4. Retest the system.
Q: Does the accelerator pedal work normally?
YES :
This procedure is complete.
NO :
Go to Step 1.
ON-VEHICLE SERVICE
ACCELERATOR CABLE CHECK AND
ADJUSTMENT
M1171000900239
1. Turn off air conditioning and all lights.
Inspect and adjust at no load.
2. Start engine and allow to idle unit it reaches normal
operating temperature.
3. Confirm the idle speed is at standard value.
Standard value: 700
± 100 r/min
4. Stop the engine [ignition switch the "LOCK" (OFF) position].
5. Confirm there are no sharp bends in the accelerator cable.
6. Check the inner cable for correct slack.
Standard value: 1
− 2 mm (0.04 − 0.08 inch)
7. If there is too much slack or no slack, adjust the cable as
follows:
(1) Loosen the jam nut and fully close the throttle lever.
(2) Tighten the adjusting nut until just before the throttle lever
starts to move.
(3) By loosening the adjusting nut one turn, the accelerator
cable slack will be brought to the standard value.
(4) Fix the adjusting nut with the jam nut.
(5) After adjusting, check that the throttle lever is touching
the stopper.
AC000042AB
ADJUSTING NUT
JAM NUT
ENGINE CONTROL
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ENGINE AND EMISSION CONTROL
17-5
ACCELERATOR CABLE AND PEDAL
REMOVAL AND INSTALLATION
M1171001200255
Post-installation Operation
Adjusting the Accelerator Cable (Refer to
.)
AC004509
1
3
2
5
9 8
4
7
6
3
6
6
5
9
6.9 N·m
61 in-lb
AB
N
ACCELERATOR CABLE REMOVAL
STEPS
1. INNER CABLE CONNECTION
(THROTTLE BODY SIDE)
2. INNER CABLE CONNECTION
(ACCELERATOR PEDAL SIDE)
3. ACCELERATOR CABLE
ACCELERATOR PEDAL REMOVAL
STEPS
2. INNER CABLE CONNECTION
(ACCELERATOR PEDAL SIDE)
4. COTTER PIN
5. SPRING
6. ACCELERATOR ARM
7. PEDAL PAD
8. STOPPER
9. BRACKET
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-6
AUTO-CRUISE CONTROL
GENERAL DESCRIPTION
M1172000100203
By using the auto-cruise control, the driver can select
and maintain a desired cruising speed [approxi-
mately 40 km/h (25 mph) or more] without depress-
ing the accelerator pedal.
The throttle body with integrated vacuum actuator is
incorporated.
CONSTRUCTION DIAGRAM
AC004510
STOPLIGHT SWITCH
THROTTLE
BODY
ASSEMBLY
VACUUM PUMP
ASSEMBLY
PARK/NEUTRAL
POSITION SWITCH
AUTO-CRUISE
CONTROL-ECU
VEHICLE SPEED
SENSOR
MAIN SWITCH
AUTO-CRUISE
CONTROL SWITCH
AUTO-CRUISE CONTROL INDICATOR LIGHT
DATA LINK
CONNECTOR
AB
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