Geely EC718, EC718RV, EC715, EC715RV. Manual part — 22

2.5 Engine Anti-theft System JL4G18-D. 2-
274

2.5.1 Specifications. . . . . . . . . ...2-274

2.5.1.1 Fastener Tightening Specifications. . . . 2-274

2.5.2 Description and Operation. . . . . 2-275

2.5.2.1 Description and Operation. . . . . . . ..2-275

2.5.3 System Working Principle. . . . . .2-276

2.5.3.1 System Working Principle. . . . . . . ..2-276

2.5.4 Component Locator. . . . . . . ..2-277

2.5.4.1 Component Locator. . . . . . . . . . 2-277

2.5.5 Disassemble View. . . . . . . . 2-278

2.5.5.1 Disassemble View. . . . . . . . . . ..2-278

2.5.6 Schematic. . . . . . . . . . . .2-279

2.5.6.1 Schematic. . . . . . . . . . . . . ...2-279

2.5.7 Diagnostic Information and Procedures. .2-
280

2.5.7.1 Diagnosis Description. . . . . . . . . .2-280
2.5.7.2 Visual Inspection. . . . . . . . . . . 2-280
2.5.7.3 Anti-theft Engine Control Module Connector List. 2-
280
2.5.7.4 DTC code (DTC) list. . . . . . . . . ...2-281
2.5.7.5 Data Flow Table. . . . . . . . . . . .2-282
2.5.7.6 Fault Symptom Table. . . . . . . . . .2-282
2.5.7.7 Replaced Key Programming. . . . . . ..2-283
2.5.7.8 Ignition Key Erase. . . . . . . . . . ..2-284
2.5.7.9 Replaced Security Module Programming. ...2-285
2.5.7.10 Replaced ECM Programming. . . . . ...2-286
2.5.7.11 Replaced Anti-theft Module and ECM
Programming. . . . . . . . . . . . . . . ..2-286
2.5.7.12 Engine Anti-theft Warning Lamp Flashing, Vehicle
Can Not Start. . . . . . . . . . . . . . . ..2-288

2.5.8 Removal and Installation. . . . . ..2-293

2.5.8.1 EAS Coil Replacement. . . . . . . . ...2-293
2.5.8.2 Anti-theft System Control Module Replacement. .2-
297

2.6 Engine Mechanical System JL4G18-D.
2-299

2.6.1 Specifications. . . . . . . . . ...2-299

2.6.1.1 Fastener Tightening Specifications. . . . 2-299
2.6.1.2 Mechanical System Specification. . . . ...2-300

2.6.1.3 Intake and Exhaust Valves Lifter Specifications
Table. . . . . . . . . . . . . . . . . . ..2-302
2.6.1.4 Intake and Exhaust Valves Lifter Selection Table...
2-304

2.6.2 Description and Operation. . . . . 2-306

2.6.2.1 Description and Operation. . . . . . . ..2-306

2.6.3 System Working Principle. . . . . .2-307

2.6.3.1 System Working Principle. . . . . . . ..2-307

2.6.4 Component Locator. . . . . . . ..2-309

2.6.4.1 Component Locator. . . . . . . . . . 2-309

2.6.5 Disassemble View. . . . . . . . 2-310

2.6.5.1 Cylinder Head Covers. . . . . . . . . 2-310
2.6.5.2 Camshaft and Accessories. . . . . . . .2-311
2.6.5.3 Cylinder Head. . . . . . . . . . . . .2-312
2.6.5.4 Cylinder Block. . . . . . . . . . . . 2-313

2.6.6 Schematic. . . . . . . . . . . .2-315

2.6.6.1 Schematic. . . . . . . . . . . . . ...2-315

2.6.7 Diagnostic Information and Procedures. .2-
316

2.6.7.1 Diagnosis Description. . . . . . . . . .2-316
2.6.7.2 Visual Inspection. . . . . . . . . . . 2-316
2.6.7.3 Comprehensive Engine Inspections. . . ...2-316
2.6.7.4 Engine Noise Diagnosis. . . . . . . . .2-319
2.6.7.5 Noisy when there is engine load. . . . . 2-319
2.6.7.6 Slight vibration when engine is warming up. . .2-
320
2.6.7.7 Vibration at idle and when engine is warming up.
2-321
2.6.7.8 Misfire Accompanied By Abnormal Engine Noise...
2-322
2.6.7.9 Drive Belt Inspection. . . . . . . . . ..2-323
2.6.7.10 Drive Belt Chirp Sound Diagnostic. . . ...2-324
2.6.7.11 Drive Belt Scream Diagnostic. . . . . ...2-325
2.6.7.12 Drive Belt Hum Sound Diagnostic. . . . 2-327
2.6.7.13 Drive Belt Off Diagnostics. . . . . . . 2-327
2.6.7.14 Drive Belt Excessive Wear. . . . . . ...2-328

2.6.8 Removal and Installation. . . . . ..2-329

2.6.8.1 Plastic Engine Shield Replacement. . . ...2-329
2.6.8.2 Cylinder Head Cover Replacement. . . . 2-329
2.6.8.3 Drive Belt Replacement. . . . . . . . ..2-333
2.6.8.4 Drive Belt Tensioner Replacement. . . . .2-335
2.6.8.5 Throttle Body Assembly Replacement. . ...2-337

Engine

Table of Contents

2-3

2.6.8.6 Intake Manifold Assembly Replacement. . 2-343
2.6.8.7 Engine Mount Replacement. . . . . . ...2-347
2.6.8.8 Timing Chain Tensioner Replacement. . ...2-350
2.6.8.9 Timing Chain Cover Replacement. . . . .2-353
2.6.8.10 Timing Chain Replacement. . . . . . ..2-360
2.6.8.11 Timing Chain Inspection. . . . . . . ...2-366
2.6.8.12 Camshaft Replacement. . . . . . . . 2-367
2.6.8.13 Engine Replacement. . . . . . . . . 2-371
2.6.8.14 Cylinder Head Assembly Replacement. . 2-385
2.6.8.15 Cylinder Head Assembly Removal and Installation
. . . . . . . . . . . . . . . . . . . . ...2-391
2.6.8.16 Piston Connecting Rod and Bearing Replacement
. . . . . . . . . . . . . . . . . . . . ...2-398
2.6.8.17 Flywheel Replacement. . . . . . . . .2-408
2.6.8.18 Crankshaft Replacement. . . . . . . ..2-409
2.6.8.19 Piston Rod Disassemble, Assemble and
Inspection. . . . . . . . . . . . . . . . ...2-417
2.6.8.20 Valve Clearance Adjustments. . . . . ..2-422
2.6.8.21 Crankshaft Front Oil Seal Replacement. ...2-424
2.6.8.22 Crankshaft Rear Oil Seal Replacement. ...2-425

2.6.9 Special Tools and Equipment. . . ...2-426

2.6.9.1 Special Tools List. . . . . . . . . . ...2-426

2.7 Exhaust System JL4G18-D. . .2-429

2.7.1 Specifications. . . . . . . . . ...2-429

2.7.1.1 Fastener Tightening Specifications. . . . 2-429

2.7.2 Description and Operation. . . . . 2-430

2.7.2.1 Exhaust Manifold. . . . . . . . . . . 2-430
2.7.2.2 Three-Way Catalytic Converter. . . . . ..2-430

2.7.3 System Working Principle. . . . . .2-431

2.7.3.1 System Working Principle. . . . . . . ..2-431

2.7.4 Component Locator. . . . . . . ..2-432

2.7.4.1 Exhaust. . . . . . . . . . . . . . ..2-432
2.7.4.2 Three-Way Catalytic Converter Assembly. .2-433
2.7.4.3 Front Muffler Assembly. . . . . . . . ..2-434
2.7.4.4 Rear Muffler Assembly. . . . . . . . ...2-435
2.7.4.5 Front Exhaust Insulation Panel. . . . . ..2-436
2.7.4.6 Front Muffler Heat Shield. . . . . . . ...2-437

2.7.5 Diagnostic Information and Procedures. .2-
438

2.7.5.1 Diagnostic Description. . . . . . . . . 2-438
2.7.5.2 Visual Inspection. . . . . . . . . . . 2-438
2.7.5.3 Exhaust System Blockage. . . . . . . ..2-438

2.7.5.4 Exhaust System Leakage. . . . . . . ...2-438
2.7.5.5 Exhaust System Noise. . . . . . . . ...2-439
2.7.5.6 Exhaust System Repair Notes. . . . . ...2-439

2.7.6 Removal and Installation. . . . . ..2-441

2.7.6.1 Exhaust Manifold Replacement. . . . . ..2-441
2.7.6.2 Three-way Catalytic Converter Replacement. ...2-
447
2.7.6.3 Front Muffler Replacement. . . . . . . .2-450
2.7.6.4 Rear Muffler Replacement. . . . . . . .2-452

2.8 Cooling System JL4G18-D. . ..2-455

2.8.1 Specifications. . . . . . . . . ...2-455

2.8.1.1 Fastener Tightening Specifications. . . . 2-455
2.8.1.2 Cooling System Specifications. . . . . ...2-455

2.8.2 Description and Operation. . . . . 2-457

2.8.2.1 Description and Operation. . . . . . . ..2-457

2.8.3 System Working Principle. . . . . .2-458

2.8.3.1 System Working Principle. . . . . . . ..2-458

2.8.4 Component Locator. . . . . . . ..2-460

2.8.4.1 Component Locator. . . . . . . . . . 2-460

2.8.5 Disassemble View. . . . . . . . 2-461

2.8.5.1 Disassemble View. . . . . . . . . . ..2-461

2.8.6 Schematic. . . . . . . . . . . .2-462

2.8.6.1 Schematic. . . . . . . . . . . . . ...2-462

2.8.7 Diagnostic Information and Procedures. .2-
464

2.8.7.1 Diagnosis Description. . . . . . . . . .2-464
2.8.7.2 Cooling Fan Circuit Diagnosis. . . . . . 2-464
2.8.7.3 High-Speed Cooling Fan Does Not Run. . 2-465
2.8.7.4 Low-Speed Cooling Fan Does Not Run. . .2-468
2.8.7.5 Cooling Fan Always Runs At Low Speed. ...2-472
2.8.7.6 Cooling Fan Always Runs At High Speed. ..2-474
2.8.7.7 Thermostat Diagnostic. . . . . . . . ...2-477
2.8.7.8 Engine Overheating. . . . . . . . . . 2-478
2.8.7.9 Engine Does Not Reach Normal Operating
Temperature. . . . . . . . . . . . . . . ...2-479
2.8.7.10 Excessive Engine Coolant Loss. . . . ...2-480

2.8.8 Removal and Installation. . . . . ..2-482

2.8.8.1 Engine Coolant Discharge and Filling. . . 2-482

2-4

Table of Contents

Engine

2.8.8.2 Coolant Recovery Reservoir Replacement. . ..2-
483
2.8.8.3 Cooling Fan Replacement. . . . . . . ..2-485
2.8.8.4 Thermostat Replacement. . . . . . . ...2-489
2.8.8.5 Radiator Replacement. . . . . . . . . 2-492
2.8.8.6 Water Pump Replacement. . . . . . . .2-494

2.9 Lubricating System JL4G18-D. 2-499

2.9.1 Specifications. . . . . . . . . ...2-499

2.9.1.1 Fastener Tightening Specifications. . . . 2-499
2.9.1.2 Oil Pump Specifications. . . . . . . . .2-499

2.9.2 Description and Operation. . . . . 2-500

2.9.2.1 Description and Operation. . . . . . . ..2-500

2.9.3 System Working Principle. . . . . .2-501

2.9.3.1 Lubrication Schematic. . . . . . . . . 2-501
2.9.3.2 Engine Oil Pressure Sensor Plug Control Principle.
2-502

2.9.4 Component Locator. . . . . . . ..2-503

2.9.4.1 Component Locator. . . . . . . . . . 2-503

2.9.5 Disassemble View. . . . . . . . 2-504

2.9.5.1 Disassemble View. . . . . . . . . . ..2-504

2.9.6 Schematic. . . . . . . . . . . .2-505

2.9.6.1 Schematic. . . . . . . . . . . . . ...2-505

2.9.7 Diagnostic Information and Procedures. .2-
506

2.9.7.1 Diagnosis Description. . . . . . . . . .2-506
2.9.7.2 Visual Inspection. . . . . . . . . . . 2-506
2.9.7.3 Abnormal Engine Oil Consumption Diagnostic. 2-
506
2.9.7.4 Engine Oil Pressure Diagnostic and Test. ...2-507
2.9.7.5 Engine Oil Leak Diagnostic. . . . . . . 2-508

2.9.8 Removal and Installation. . . . . ..2-510

2.9.8.1 Oil Pump Replacement. . . . . . . . ..2-510
2.9.8.2 Oil Pump Cleaning and Inspection. . . . .2-512
2.9.8.3 Oil Pan Replacement. . . . . . . . . .2-514

2.10 Ignition System JL4G18-D. . 2-517

2.10.1 Specifications. . . . . . . . . .2-517

2.10.1.1 Fastener Tightening Specifications. . . ..2-517
2.10.1.2 Ignition System Specification. . . . . ...2-517

2.10.2 Description and Operation. . . . ..2-518

2.10.2.1 Description and Operation. . . . . . . 2-518

2.10.3 System Working Principle. . . . ...2-519

2.10.3.1 System Working Principle. . . . . . . 2-519

2.10.4 Component Locator. . . . . . . 2-520

2.10.4.1 Component Locator. . . . . . . . . ..2-520

2.10.5 Disassemble View. . . . . . . ..2-521

2.10.5.1 Ignition Cylinder Assembly Disassemble View...2-
521

2.10.6 Schematic. . . . . . . . . . ...2-522

2.10.6.1 Schematic. . . . . . . . . . . . . .2-522

2.10.7 Diagnostic Information and Procedures. . .2-
524

2.10.7.1 Diagnosis Description. . . . . . . . ...2-524
2.10.7.2 Visual Inspection. . . . . . . . . . ..2-524
2.10.7.3 Check Ignition Switch. . . . . . . . ...2-524
2.10.7.4 Ignition Relay IG1 No Power Output. . . 2-525
2.10.7.5 Spark Plug Does Not Arcing. . . . . . .2-526
2.10.7.6 Spark Plug Diagnostic. . . . . . . . ..2-530
2.10.7.7 Common Spark Plug Malfunction. . . . .2-531

2.10.8 Removal and Installation. . . . . 2-535

2.10.8.1 Camshaft Position Sensor Replacement. ..2-535
2.10.8.2 Crankshaft Position Sensor Replacement. . ..2-
537
2.10.8.3 Ignition Coil Replacement. . . . . . . 2-539
2.10.8.4 Spark Plug Replacement. . . . . . . ..2-543
2.10.8.5 Knock Sensor Replacement. . . . . . .2-545

2.11 Starting / Charging System JL4G18-D
. . . . . . . . . . . . . . ..2-547

2.11.1 Specifications. . . . . . . . . .2-547

2.11.1.1 Fastener Tightening Specifications. . . ..2-547
2.11.1.2 General Specifications. . . . . . . . .2-547

2.11.2 Description and Operation. . . . ..2-549

2.11.2.1 Battery Description and Operation. . . ...2-549
2.11.2.2 Starting System Description and Operation. ...2-
549
2.11.2.3 Charging System Description and Operation. .2-
549

Engine

Table of Contents

2-5

2.11.3 System Working Principle. . . . ...2-551

2.11.3.1 Starting System Working Principle. . . ...2-551
2.11.3.2 Charging System Working Principle. . . .2-551

2.11.4 Component Locator. . . . . . . 2-553

2.11.4.1 Generator and Starter. . . . . . . . ..2-553

2.11.5 Disassemble View. . . . . . . ..2-554

2.11.5.1 Starter Disassemble View. . . . . . . 2-554
2.11.5.2 Generator Disassemble View. . . . . ...2-555

2.11.6 Schematic. . . . . . . . . . ...2-556

2.11.6.1 Schematic. . . . . . . . . . . . . .2-556

2.11.7 Diagnostic Information and Procedures. . .2-
559

2.11.7.1 Diagnosis Description. . . . . . . . ...2-559
2.11.7.2 Visual Inspection. . . . . . . . . . ..2-559
2.11.7.3 Starter Can Not Stop. . . . . . . . . 2-559
2.11.7.4 Engine Can Not Start. . . . . . . . ...2-560
2.11.7.5 Start Motor Noise Diagnostic. . . . . . 2-565
2.11.7.6 Charging Indicator Always On. . . . . ..2-566
2.11.7.7 Charging Indicator Always Off. . . . . ..2-568
2.11.7.8 Generator Noise Diagnosis. . . . . . ..2-569
2.11.7.9 Battery Discharging Current Parasitic Load Test. .
2-571
2.11.7.10 Jump Start Procedure. . . . . . . . 2-572

2.11.8 Removal and Installation. . . . . 2-574

2.11.8.1 Battery Disconnection. . . . . . . . ..2-574
2.11.8.2 Battery Replacement. . . . . . . . . 2-576
2.11.8.3 Generator Replacement. . . . . . . ...2-578
2.11.8.4 Starter Replacement. . . . . . . . . 2-581

2.12 Control System JL4G15-D. . 2-585

2.12.1 Specifications. . . . . . . . . .2-585

2.12.1.1 Fastener Tightening Specifications. . . ..2-585
2.12.1.2 Intake Air Temperature Sensor Non-Load
Resistance Temperature Characteristics Table. . .2-585
2.12.1.3 Intake Air Pressure Sensor Output Voltage and
Pressure Relationship. . . . . . . . . . . . 2-586

2.12.2 Description and Operation. . . . ..2-587

2.12.2.1 Overview. . . . . . . . . . . . . ..2-587
2.12.2.2 Components Descriptions. . . . . . . 2-587

2.12.3 System Working Principle. . . . ...2-593

2.12.3.1 Electronic Throttle Body (ETC) Working Principle.
2-593
2.12.3.2 ECM Controlled Fuel Supply System. . ...2-594
2.12.3.3 ECM Controlled Ignition System. . . . ..2-595
2.12.3.4 Electronic Throttle Body Function Restrictions...2-
596
2.12.3.5 Idle Speed Control. . . . . . . . . . 2-597
2.12.3.6 Knock Control. . . . . . . . . . . ...2-598
2.12.3.7 Air-Conditioning Switch Off Control. . . ..2-598
2.12.3.8 Canister Solenoid Valve Control. . . . ..2-599
2.12.3.9 Fault Self-diagnosis and Protection Function. .2-
599

2.12.4 Component Locator. . . . . . . 2-600

2.12.4.1 Component Locator. . . . . . . . . ..2-600

2.12.5 Disassemble View. . . . . . . ..2-601

2.12.5.1 Disassemble View. . . . . . . . . . 2-601

2.12.6 Schematic. . . . . . . . . . ...2-602

2.12.6.1 Schematic. . . . . . . . . . . . . .2-602

2.12.7 Diagnostic Information and Procedures. . .2-
606

2.12.7.1 Diagnosis Description. . . . . . . . ...2-606
2.12.7.2 Control System Check. . . . . . . . ..2-606
2.12.7.3 Intermittent Fault Check. . . . . . . ...2-606
2.12.7.4 Symptoms Table. . . . . . . . . . ..2-606
2.12.7.5 ECM Terminal List. . . . . . . . . . 2-614
2.12.7.6 DTC Code Type Definition. . . . . . ...2-618
2.12.7.7 DTC Code (DTC) List. . . . . . . . ...2-619
2.12.7.8 DTC Fail-Safe List. . . . . . . . . . 2-622
2.12.7.9 Data Stream List. . . . . . . . . . ...2-627
2.12.7.10 Action Test Table. . . . . . . . . ...2-630
2.12.7.11 Crankshaft Position Sensor (CKP) Learn. . .2-
632
2.12.7.12 Electronic Throttle Body (ETC) Check. ...2-633
2.12.7.13 Acceleration Pedal Position Sensor (APP) Check
. . . . . . . . . . . . . . . . . . . . ...2-634
2.12.7.14 DTC Code Index. . . . . . . . . . .2-636
2.12.7.15 DTC P0011 P0012 P0016 P0026. . . ..2-640
2.12.7.16 DTC P0068 P0106. . . . . . . . . .2-644
2.12.7.17 DTC P0076 P0077. . . . . . . . . .2-648
2.12.7.18 DTC P0107 P0108. . . . . . . . . .2-651
2.12.7.19 DTC P0112 P0113. . . . . . . . . .2-658
2.12.7.20 DTC P0117 P0118. . . . . . . . . .2-662
2.12.7.21 DTC P0122 P0123. . . . . . . . . .2-667

2-6

Table of Contents

Engine