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1、17-1 GROUP 17 ENGINE AND EMISSION CONTROL CONTENTS ENGINE CONTROL. . . . . . . . . .17-3 GENERAL DESCRIPTION . . . . . .17-3 ENGINE CONTROL SYSTEM DIAGNOSIS . . . . . . . . . . . . . . . . . .17-3 INTRODUCTION TO ENGINE CONTROL SYSTEM DIAGNOSIS . . . . . . . . . . . . . . 17-3 ENGINE CONTROL SYSTEM
2、DIAGNOSTIC TROUBLESHOOTING STRATEGY . . . 17-3 SYMPTOM CHART . . . . . . . . . . . . . . . . 17-3 SYMPTOM PROCEDURES . . . . . . . . . 17-3 SPECIAL TOOL. . . . . . . . . . . . . . .17-6 ON-VEHICLE SERVICE . . . . . . . . .17-6 ACCELERATOR PEDAL POSITION SENSOR ADJUSTMENT. . . . . . . . . . . . 17-6
3、ACCELERATOR PEDAL POSITION SENSOR CHECK. . . . . . . . . . . . . . . . . . 17-7 ACCELERATOR PEDAL POSITION SWITCH CHECK . . . . . . . . . . . . . . . . . . 17-7 ACCELERATOR CABLE AND PEDAL . . . . . . . . . . . . . . . . . . . . . .17-7 REMOVAL AND INSTALLATION. . . . . . 17-7 Continued on next page
4、 WARNINGS REGARDING SERVICING OF SUPPLEMENTAL RESTRAINT SYSTEM (SRS) EQUIPPED VEHICLES WARNING Improper service or maintenance of any component of the SRS, or any SRS-related component, can lead to personal injury or death to service personnel (from inadvertent firing of the air bag) or to the drive
5、r and paassenger (from rendering the SRS inoperative). Service or maintenance of any SRS component or SRS-related component must be performed only at an authorized MITSUBISHI dealer. MITSUBISHI dealer personnel must thoroughly review this manual, and especially its GROUP 52B - Supplemental Restraint
6、 System (SRS) before beginning any service or maintenance of any component of the SRS or any SRS- related component. NOTE The SRS includes the following components: SRS air bag control unit, SRS warning light, front impact sensors, air bag module, clock spring, and interconnecting wiring. Other SRS-
7、related components (that may have to be removed/installed in connection with SRS service or maintenance) are indicated in the table of contents by an asterisk (*). 17-2 AUTO-CRUISE CONTROL* . . .17-8 GENERAL DESCRIPTION . . . . . .17-8 AUTO-CRUISE CONTROL SYSTEM DIAGNOSIS . . . . . . . . . . . . . .
8、 . . . .17-9 INTRODUCTION TO AUTO-CRUISE CONTROL SYSTEM DIAGNOSIS. . . . . 17-9 AUTO-CRUISE CONTROL SYSTEM DIAGNOSTIC TROUBLESHOOTING STRATEGY . . . . . . . . . . . . . . . . . . . . . . 17-9 AUTO-CRUISE CONTROL SYSTEM DIAGNOSTIC FUNCTION. . . . . . . . . . . 17-10 DIAGNOSTIC TROUBLE CODE CHART17-12
9、 DIAGNOSTIC TROUBLE CODE PROCEDURES . . . . . . . . . . . . . . . . . . . 17-13 SYMPTOM CHART . . . . . . . . . . . . . . . . 17-37 SYMPTOM PROCEDURES . . . . . . . . . 17-37 DATA LIST REFERENCE TABLE . . . . . 17-49 PCM TERMINAL VOLTAGE REFERENCE CHART FOR AUTO-CRUISE CONTROL SYSTEM OPERATION . . .
10、 . . . . . . . . . . 17-51 SPECIAL TOOLS. . . . . . . . . . . . . .17-53 ON-VEHICLE SERVICE. . . . . . . . .17-54 AUTO-CRUISE CONTROL SWITCH CHECK . . . . . . . . . . . . . . . . . . . . . . . . . 17-54 AUTO-CRUISE CONTROL SYSTEM COMPONENT CHECK . . . . . . . . . . . . . 17-56 AUTO-CRUISE CONTROL .
11、. . . . . . . . . 17-58 REMOVAL AND INSTALLATION . . . . . 17-58 EMISSION CONTROL. . . . . . . .17-59 GENERAL DESCRIPTION . . . . . .17-59 DIAGNOSIS . . . . . . . . . . . . . . . . . .17-59 SPECIAL TOOLS. . . . . . . . . . . . . .17-60 VACUUM HOSES . . . . . . . . . . . . . . . . . 17-61 VACUUM HOSE
12、 ROUTING. . . . . . . . . . 17-61 VACUUM CIRCUIT DIAGRAM . . . . . . . 17-62 VACUUM HOSE INSTALLATION . . . . . 17-62 VACUUM HOSE CHECK. . . . . . . . . . . . 17-63 POSITIVE CRANKCASE VENTILATION SYSTEM. . . . . . . . . . . . . . . . . . . . .17-63 GENERAL DESCRIPTION (POSITIVE CRANKCASE VENTILATION
13、 SYSTEM)17-63 COMPONENT LOCATION . . . . . . . . . . 17-64 POSITIVE CRANKCASE VENTILATION SYSTEM CHECK. . . . . . . . . . . . . . . . . . 17-64 POSITIVE CRANKCASE VENTILATION VALVE CHECK . . . . . . . . . . . . . . . . . . . 17-64 EVAPORATIVE EMISSION CONTROL SYSTEM . . . . . . . . . . . . . . . . .
14、 . . . .17-65 GENERAL DESCRIPTION (EVAPORATIVE EMISSION SYSTEM). . . . . . . . . . . . . . . 17-65 COMPONENT LOCATION. . . . . . . . . . . 17-66 PURGE CONTROL SYSTEM CHECK (PURGE FLOW CHECK) . . . . . . . . . . . . 17-66 EVAPORATIVE EMISSION PURGE SOLENOID CHECK . . . . . . . . . . . . . . . . 17-67
15、 VOLUME AIRFLOW SENSOR CHECK. 17-68 BAROMETRIC PRESSURE SENSOR CHECK. . . . . . . . . . . . . . . . . . . . . . . . . . 17-68 ENGINE COOLANT TEMPERATURE SENSOR CHECK. . . . . . . . . . . . . . . . . . 17-68 INTAKE AIR TEMPERATURE SENSOR CHECK. . . . . . . . . . . . . . . . . . . . . . . . . . 17-68
16、FUEL TANK DIFFERENTIAL PRESSURE SENSOR CHECK. . . . . . . . . . . . . . . . . . 17-68 EVAPORATIVE EMISSION VENTILATION SOLENOID CHECK . . . . . . . . . . . . . . . . 17-68 EXHAUST GAS RECIRCULATION (EGR) SYSTEM . . . . . . . . . . . . . . . . . . . . .17-69 GENERAL DESCRIPTION (EXHAUST GAS RECIRCULATION SYSTEM). . . . . . . . . 17-69 COMPONENT LOCATION. . . . . . . . . . . 17-69 EGR VALVE (STEPPER MOTOR) CHECK 17-70 EGR VALVE (STEPPER MOTOR) CLEAN
