Mitsubishi Outlander (2003+). Manual - part 146

ENGINE CONTROL

ENGINE AND EMISSION CONTROL

17-3

ENGINE CONTROL

GENERAL INFORMATION

M1171000100329

A cable-type accelerator mechanical 
suspended-type pedal has been adopted.

SERVICE SPECIFICATIONS

M1171000300099

TROUBLESHOOTING

INTRODUCTION TO ENGINE CONTROL 
SYSTEM DIAGNOSIS

M1171002000287

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

M1171002100314

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

M1171002200322

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: Throttle Valve will not Fully Open or Close <4G63>

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 (Refer to 

P.17-5

). Then go to Step 3 .

STEP 2. Check the throttle valve.

Check that the throttle lever of the throttle body 
assembly moves smoothly by moving it by hand.

Q: Does the throttle lever of the throttle body 

assembly move smoothly?

YES : 

Go to Step 3 .

NO : 

Cleaning the throttle body (Refer to GROUP 
13A, On-vehicle Service 

P.13A-324

), or 

replace the throttle body assembly (Refer to 
GROUP 13A, Throttle Body 

P.13A-340

). 

Then go to Step 3 .

STEP 3. Retest the system.

Q: Does the throttle valve fully open and close?

YES : 

The procedure is complete.

NO : 

Return to Step 1 .

Items

Standard value

Accelerator cable play mm

1.0 

−

 2.0

Engine idle speed r/min

4G63

750 

±

 50

4G69

700 

±

 100

SYMPTOM

INSPECTION PROCEDURE

REFERENCE PAGE

Throttle valve will not fully open or close <4G63> 1

P.17-3

Throttle valve will not fully open or close <4G69> 2

P.17-4

Accelerator pedal operation is not smooth (over 
acceleration)

3

P.17-4

ENGINE CONTROL

ENGINE AND EMISSION CONTROL

17-4

INSPECTION PROCEDURE 2: Throttle Valve will not Fully Open or Close <4G69>

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 (Refer to 

P.17-5

). Then go to Step 5 .

STEP 2. Check the accelerator pedal position 
sensor assembly.

Check that the lever of the accelerator pedal position 
sensor assembly moves smoothly by moving it by 
hand.

Q: Dose the lever of the accelerator pedal position 

sensor assembly move smoothly?

YES : 

Go to Step 3 .

NO : 

Replace the accelerator pedal position 
sensor assembly (Refer to 

P.17-9

). Then go 

to Step 5 .

STEP 3. Check the accelerator pedal position 

sensor assembly.
Refer to GROUP 13B, On-vehicle Service 

P.13B-431

.

Q: Is the accelerator pedal position sensor assembly 

normally?

YES : 

Go to Step 4 .

NO : 

Replace the accelerator pedal position 
sensor assembly (Refer to 

P.17-9

). Then go 

to Step 5 .

STEP 4. Check the Throttle valve (Throttle valve 
control servo).

Refer to GROUP 13B, On-vehicle Service 

P.13B-436

Q: Is the throttle valve control servo normally?

YES : 

Go to Step 5 .

NO : 

Cleaning the throttle body (Refer to GROUP 
13B, On-vehicle Service 

P.13B-425

), or 

replace the throttle body assembly (Refer to 
GROUP 13B, Throttle Body 

P.13B-438

). 

Then go to Step 5 .

STEP 5. Retest the system.

Q: Does the throttle valve fully open and close?

YES : 

The procedure is complete.

NO : 

Return to Step 1 .

INSPECTION PROCEDURE 3: Accelerator Pedal Operation is not Smooth (Over Acceleration)

DIAGNOSIS

STEP 1. Check the accelerator pedal.

Q: Is the accelerator pedal loose? 

YES : 

Tighten the fasteners. 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 : 

Correct the cable routing 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 : 

Go to Step 4 .

NO : 

Refill or replace the lubricant. Then go to 
Step 4 .

STEP 4. Retest the system.

Q: Does the accelerator pedal work normally?

YES : 

The procedure is complete.

NO : 

Return to Step 1 .

ENGINE CONTROL

ENGINE AND EMISSION CONTROL

17-5

ON-VEHICLE SERVICE

ACCELERATOR CABLE CHECK AND 
ADJUSTMENT <4G63>

M1171000900347

1. Turn A/C and lights OFF. Inspect and adjust at no 

load.

2. Warm engine until stabilized at idle.
3. Confirm idle speed is at standard value.

Standard value: 750 

±

 50 r/min

4. Stop engine. [ignition switch: LOCK (OFF) 

position].

5. Confirm there are no sharp bends in the 

accelerator cable.

6. Check the inner cable for correct slack.

Standard value: 1.0 

−

 2.0 mm

7. If there is too much slack or no slack, adjust play 

by the following procedures.
(1) Loosen the adjusting bolts to release the 

cable.

(2) Move the plate until the inner cable play is at 

the standard value, and then tighten the 
adjusting bolts.

(3) After adjusting, check that the throttle lever is 

touching the stopper.

ACCELERATOR CABLE CHECK AND 
ADJUSTMENT <4G69>

M1171000900358

1. Turn A/C and lights OFF. Inspect and adjust at no 

load.

2. Warm engine until stabilized at idle.
3. Confirm idle speed is at standard value.

Standard value: 700 

±

 100 r/min

4. Stop engine. [ignition switch: LOCK (OFF) 

position].

5. Confirm there are no sharp bends in the 

accelerator cable.

6. Check the inner cable for correct slack.

Standard value: 1.0 

−

 2.0 mm

7. If there is too much slack or no slack, adjust play 

by the following procedures.
(1) Loosen the lock nut  and adjusting nut to 

release the cable.

(2) Tighten the adjusting nut until the inner cable 

play is at the standard value, and then tighten 
the lock nut.

AC212490

Adjusting bolt

Plate

AC

Accelerator cable

AC304671

Adjusting nut

AE

Accelerator cable

Lock nut

Accelerator pedal
position sensor

ENGINE CONTROL

ENGINE AND EMISSION CONTROL

17-6

ACCELERATOR CABLE AND PEDAL 
<4G63>

REMOVAL AND INSTALLATION

M1171001200404

INSTALLATION SERVICE POINT

>>A<< PEDAL PAD INSTALLATION

CAUTION

To prevent damages to the Pedal Pad, warm the 
thumb area of the Pedal Pad with a dryer, etc. 
prior to assembling it.
NOTE: If it is difficult to assemble, apply soapy water 
to the thumb area to enhance the assembling 
process.

Post-installation Operation
Adjusting the Accelerator Cable (Refer to 

P.17-5

).

AC309483AB

1

3

2

5.0 ± 1.0 N·m

12 ± 2 N·m

N

4

5

7

8

10

9

7

11

N

12

6

13

Accelerator cable assembly 
removal steps

1. Inner cable connection (Accelerator 

pedal side)

2. Inner cable connection (Throttle body 

side)

3. Accelerator cable assembly

Accelerator pedal assembly 
removal steps

1. Inner cable connection (Accelerator 

pedal side)

4. Accelerator pedal assembly
5. Push-on spring nut
6. Accelerator arm and accelerator 

pedal pad assembly

7. Bushing
8. Spring
9. Stopper

10. Accelerator pedal bracket
11. Accelerator arm

>>A<<

12. Accelerator pedal pad
13. Accelerator pedal stopper

Accelerator pedal assembly 
removal steps (Continued)