Mitsubishi Galant. Manual — part 358

17-2

VACUUM CIRCUIT DIAGRAM . . . . . . .

17-79

VACUUM HOSE INSTALLATION . . . . .

17-80

VACUUM HOSE CHECK. . . . . . . . . . . .

17-81

POSITIVE CRANKCASE VENTILATION
SYSTEM. . . . . . . . . . . . . . . . . . . . .

17-81

GENERAL INFORMATION (POSITIVE
CRANKCASE VENTILATION SYSTEM)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17-81

COMPONENT LOCATION . . . . . . . . . .

17-82

CRANKCASE VENTILATION SYSTEM CHECK
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17-83

POSITIVE CRANKCASE VENTILATION (PCV)
VALVE CHECK . . . . . . . . . . . . . . . . . . .

17-83

EVAPORATIVE EMISSION CONTROL
SYSTEM. . . . . . . . . . . . . . . . . . . . .

17-83

GENERAL INFORMATION . . . . . . . . . .

17-83

COMPONENT LOCATION . . . . . . . . . .

17-84

PURGE CONTROL SYSTEM CHECK
(PURGE FLOW CHECK). . . . . . . . . . . .

17-85

EVAPORATIVE EMISSION PURGE
SOLENOID CHECK. . . . . . . . . . . . . . . .

17-86

CHAMBER CHECK . . . . . . . . . . . . . . . .

17-86

VOLUME AIR FLOW SENSOR CHECK
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17-86

BAROMETRIC PRESSURE SENSOR
CHECK . . . . . . . . . . . . . . . . . . . . . . . . .

17-87

ENGINE COOLANT TEMPERATURE
SENSOR CHECK . . . . . . . . . . . . . . . . .

17-87

INTAKE AIR TEMPERATURE SENSOR
CHECK . . . . . . . . . . . . . . . . . . . . . . . . .

17-87

FUEL TANK DIFFERENTIAL PRESSURE
SENSOR CHECK . . . . . . . . . . . . . . . . .

17-87

EVAPORATIVE EMISSION VENTILATION
SOLENOID CHECK. . . . . . . . . . . . . . . .

17-88

EXHAUST GAS RECIRCULATION
(EGR) SYSTEM . . . . . . . . . . . . . . .

17-88

GENERAL INFORMATION . . . . . . . . . .

17-88

COMPONENT LOCATION. . . . . . . . . . .

17-90

EGR SYSTEM CHECK . . . . . . . . . . . . .

17-91

VACUUM CONTROL VALVE CHECK . .

17-92

EGR VALVE CHECK . . . . . . . . . . . . . . .

17-92

EGR PORT VACUUM CHECK. . . . . . . .

17-93

EGR SOLENOID CHECK. . . . . . . . . . . .

17-93

VOLUME AIR FLOW SENSOR CHECK

17-94

ENGINE COOLANT TEMPERATURE SENSOR
CHECK . . . . . . . . . . . . . . . . . . . . . . . . . .

17-94

CRANKSHAFT POSITION SENSOR CHECK

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17-95

EVAPORATIVE EMISSION CANISTER
AND FUEL TANK PRESSURE RELIEF
VALVE . . . . . . . . . . . . . . . . . . . . . .

17-95

REMOVAL AND INSTALLATION. . . . . .

17-95

INSPECTION . . . . . . . . . . . . . . . . . . . . .

17-96

CATALYTIC CONVERTER . . . . . .

17-97

GENERAL INFORMATION (CATALYTIC
CONVERTER) . . . . . . . . . . . . . . . . . . . .

17-97

REMOVAL AND INSTALLATION. . . . . .

17-98

SPECIFICATIONS . . . . . . . . . .

17-100

FASTENER TIGHTENING
SPECIFICATIONS . . . . . . . . . . . . .

17-100

SERVICE SPECIFICATIONS . . . . .

17-101

ENGINE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-3

.

EN G IN E C O N TR O L

GENERAL INFORMATION

M1171000100062

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

ENGINE CONTROL SYSTEM DIAGNOSIS

INTRODUCTION TO ENGINE CONTROL SYSTEM DIAGNOSIS

M1171002000061

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

M1171002100080

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

M1171002200087

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

P.17-4

, 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. Check symptom.

Q: Does the throttle valve fully open and close?

YES :

This diagnosis is complete.

NO :

Return to Step 1.

SYMPTOMS

INSPECTION PROCEDURE

REFERENCE PAGE

Throttle valve will not fully open or close

1

P.17-3

Accelerator pedal operation not smooth
(over acceleration)

2

P.17-4

ENGINE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-4

INSPECTION PROCEDURE 2: Accelerator Pedal Operation 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. Check symptom.

Q: Does the accelerator pedal work normally?

YES :

This diagnosis is complete.

NO :

Go to Step 1.

ON-VEHICLE SERVICE

ACCELERATOR CABLE CHECK AND
ADJUSTMENT

M1171000900068

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 ''OFF'').

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 adjusting bolt to release the cable.
(2) Move the plate until the inner cable play is at the standard

value, and then tighten the adjusting bolt.

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

the stopper.

AC004566

PLATE

ADJUSTING BOLTS

AB

ENGINE CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-5

ACCELERATOR CABLE AND PEDAL

REMOVAL AND INSTALLATION

M1171001200084

Post-installation Operation
Adjusting the Accelerator Cable (Refer to

P.17-4

.)

AC004567

1

1

4

5

8

6

7

9

12

8

4

11

4

13

10

10

8

3

2

2

12 N·m
106 in-lb

N

AB

<2.4L ENGINE>

<2.4L ENGINE>

<3.0L ENGINE>

<3.0L ENGINE>

REMOVAL STEPS

1. ADJUSTING BOLT
2. INNER CABLE CONNECTION

(THROTTLE LEVER SIDE)

3. INNER CABLE CONNECTION

(ACCELERATOR PEDAL SIDE)

4. ACCELERATOR CABLE
5. PUSH-ON SPRING NUT
6. PEDAL PAD

7. SPRING
8. ACCELERATOR ARM ASSEMBLY
9. ACCELERATOR PEDAL BRACKET
10. BUSHING
11. STOPPER
12. ACCELERATOR PEDAL STOPPER
13. BRACKET

REMOVAL STEPS (Continued)

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