Downloaded from www.Manualslib.com manuals search engine HOW TO LOCATE ELECTRICAL SCHEMATICS IN THESERVICE MANUAL
Electrical Schematic Index
The following table shows where to locate a specific electrical schematic for a vehicle component or system. The
electrical schematics are found throughout the service manual and are easily identified by their components or vehi-
cle systems.
NOTE :
Some service manual chapters DO NOT contain electrical schematics, and will be identified as Nonein the Com-
ponent/Vehicle System column.
SERVICE MANUAL CHAPTER COMPONENT / VEHICLE SYSTEM
01 - General Information •None
02 - Engine •None
03 - Electronic Engine Controls •
Engine Control Module (ECM)
• Engine Coolant Temperature Sensor
• Knock Sensor
• Upstream Oxygen Sensor
• Downstream Oxygen Sensor
• Crankshaft Position Sensor
• Camshaft Position Sensor
• Ignition Coil
• Canister Control Valve
• Front Fuse and Relay Box
• A/C Compressor
• Immobilizer Control Module
• Fuel Injectors
• Manifold Absolute Pressure Sensor (1.6L Only)
• Accelerator Pedal Position Sensor
• Vehicle Speed Sensor
• Throttle Pedal Position Sensor
• Power Steering Switch
• Clutch Pedal Switch (if equipped)
• Electronic Throttle Control Actuator
04 - Fuel Delivery •
Fuel Injectors
• Fuel Level Sensor and Fuel Pump
05 - Starting & Charging •
Starter Motor
• Ignition Switch
• Clutch Pedal Switch (if equipped)
• Generator
06 - Cooling System •Cooling Fan
07 - Exhaust •None
01
01–25Chery Automobile Co., Ltd.
Downloaded from www.Manualslib.com manuals search engine SERVICE MANUAL CHAPTERCOMPONENT / VEHICLE SYSTEM
08 - Transaxle & Transfer Case •
Transaxle Control Module (TCM)
• Automatic Transaxle Shifter Selector
• Automatic Transaxle Assembly
• Manual Transaxle Assembly
• Winter Mode Switch
• EPDE Solenoid Valve
• Backup Lamp Switch
• Integrated Torque Management (ITM) Control Module
09 - Driveline & Axle •None
10 - Suspension •None
11 - Steering •Power Steering Switch
12 - Brakes •
Antilock Brake System (ABS) Module
• Wheel Speed Sensors
• Brake Switch
• Parking Brake Switch
• Brake Fluid Level Switch
13 - Heating & Air Conditioning •
Manual Temperature Control System
• Blower Motor
• A/C Compressor
• Refrigerant Pressure Switch
14 - Restraints •
Restraints Control Module
• Seat Belt Buckle Switch
• Front Crash Sensors
• Driver Airbag
• Passenger Airbag
HOW TO LOCATE ELECTRICAL SCHEMATICS IN THE SERVICE MANUAL
01–26Chery Automobile Co., Ltd.
Downloaded from www.Manualslib.com manuals search engine SERVICE MANUAL CHAPTERCOMPONENT / VEHICLE SYSTEM
15 - Body & Accessories •
Windshield Wiper Motor
• Windshield Washer Motor
• Rear Window Defroster
• Power Door Locks
• Power Windows
• Power Mirrors
• Sunroof Control Unit
• Radio
• Interior Lights
• Exterior Lights
• Oil Pressure Switch
• Warning Buzzer
• Body Control Module (BCM)
• Instrument Cluster
• Key Switch
• Power Outlet
• Data Link Connector
• Immobilizer Control Module
• Horn
16 - Wiring •
Power Distribution
• Front Fuse and Relay Box
• Power Fuse Box
• Ignition Switch
• Ground Distribution
Abbreviation List
TERM ABBREVIATION
Antilock Brake System ABS
Accelerator Sensor AES
Accelerator Pedal Position Sensor APS
Automatic Temperature Control ATC
Automatic Transaxle Fluid ATF
Body Control Module BCM
Brake Pressure Sensor BPS
Camshaft Position Sensor CMP
Clutch Pedal Position Switch CPP Switch
Crankshaft Position Sensor CKP
Data Link Connector DLC
Diagnostic Trouble Code DTC
Engine Control Module ECM
Engine Coolant Temperature ECT
Engine Speed RPM
Evaporative Emission EVAP
Evaporative Emission Canister EVAP Canister
Evaporative Emission System EVAP System
Exhaust Gas Recirculation Valve EGR Valve
HOW TO LOCATE ELECTRICAL SCHEMATICS IN THE SERVICE MANUAL
01
01–27Chery Automobile Co., Ltd.
Downloaded from www.Manualslib.com manuals search engine TERMABBREVIATION
Front Left Wheel Speed Sensor FLS
Front Right Wheel Speed Sensor FRS
Rear Left Wheel Speed Sensor RCS
Rear Right Wheel Speed Sensor RRS
Ground GND
Heated Oxygen Sensor O2S
Idle Air Control IAC
Intake Air Temperature IAT
Ignition IGN
Ignition Control IC
Immobilizer Control Module ICM
Injector INJ
Input Shaft Speed Sensor ISS Sensor
Knock Sensor KS
Manifold Absolute Pressure MAP
Mass Air Flow MAF
Malfunction Indicator Lamp MIL
Oil Pressure Switch OPS
Output Shaft Speed Sensor OSS Sensor
Positive Crankcase Ventilation Valve PCV Valve
Power Supply PWR
SRS Airbag Control System SRC
Throttle Position Sensor TPS
Transaxle Control Module TCM
Turbine Speed Sensor TSS
Vehicle Identification Number VIN
Vehicle Speed Sensor VSS
HOW TO LOCATE ELECTRICAL SCHEMATICS IN THE SERVICE MANUAL
01–28Chery Automobile Co., Ltd.
Downloaded from www.Manualslib.com manuals search engine ELECTRONIC ENGINE CONTROLS
03
CONTENTSpage
1.6L & 1.8L Engine Controls ........................................................... 03-1
2.0L Engine Controls ................................................................ 03-227
2.4L Engine Controls ................................................................ 03-441
2.4L Engine Symptom Diagnosis ...................................................... 03-543
Ignition Control .................................................................... 03-565
Evaporative Emissions .............................................................. 03-576
1.6L & 1.8L ENGINE CONTROLS
GENERAL INFORMATION03-3
Description 03-3
Operation 03-3
Electronic Engine Control Input & Output
Device Failure Modes 03-4
Specifications 03-5
Special Tools 03-6
Electrical Schematics 03-9
ECM Connector Pin-Out Table 03-20
DIAGNOSIS & TESTING03-22
Diagnostic Help 03-22
Intermittent DTC Troubleshooting 03-22
Ground Inspection 03-22
Electronic Throttle Control Actuator
Self-Learning Operation Introduction 03-23
Diagnostic Trouble Code (DTC) List 03-23
ECM Power Supply and Ground Circuit
Test 03-28
Power Supply and Ground Circuit 03-28
Diagnostic Trouble Code (DTC) Tests 03-35
P0016 - Camshaft Position-Crankshaft
Position Correlation Error 03-35
P0031 - O
2Sensor 1 Heater Control
Circuit Low 03-45
P0032 - O
2Sensor 1 Heater Control
Circuit High 03-51
P0102 - Mass Or Volume Air Flow
Circuit Low Input 03-57
P0103 - Mass Or Volume Air Flow
Circuit High Input 03-63 P0105 - Manifold Absolute Pressure/
Barometric Pressure Circuit, P0106 -
Manifold Absolute Pressure Or
Barometric Pressure Range/
Performance 03-68
P0107 - Manifold Absolute Pressure Or
Barometric Pressure Low Input,
P0108 - Manifold Absolute Pressure Or
Barometric Pressure High Input 03-73
P0112 - Intake Air Temperature Circuit
Low Input 03-78
P0113 - Intake Air Temperature Circuit
High Input 03-84
P0117 - Engine Coolant Temperature
Circuit Low Input 03-91
P0118 - Engine Coolant Temperature
Circuit High Input 03-96
P0122 - Throttle Position Sensor A
Circuit Low Input 03-101
P0123 - Throttle Position Sensor A
Circuit High Input 03-107
P0132 - O
2Sensor 1 Circuit High
Voltage 03-112
P0171 - Fuel Trim System Too Lean 03-118
P0172 - Fuel Trim System Too Rich 03-131
P0201 - Cylinder 1 - Injector Circuit,
P0202 - Cylinder 2 - Injector Circuit,
P0203 - Cylinder 3 - Injector Circuit,
P0204 - Cylinder 4 - Injector Circuit 03-142
P0221 - Throttle Position Sensor B
Performance 03-149
03
03–1Chery Automobile Co., Ltd.
Downloaded from www.Manualslib.com manuals search engine P0261 - Cylinder 1 Injector Circuit Low,
P0264 - Cylinder 2 Injector Circuit Low,
P0267 - Cylinder 3 Injector Circuit Low,
P0270 - Cylinder 4 Injector Circuit Low 03-157
P0262 - Cylinder 1 Injector Circuit High,
P0265 - Cylinder 2 Injector Circuit High,
P0268 - Cylinder 3 Injector Circuit High,
P0271 - Cylinder 4 Injector Circuit High 03-164
P0321 - Distributor Engine Speed In
Phase Circuit Performance 03-171
P0324 - Knock Control System Error 03-177
P0343 - Camshaft Position Sensor
Circuit High Input 03-181
P0444 - Evaporative Emission System
Purge Control Valve Circuit Open 03-187
P0506 - Idle Control System RPM
Lower Than Expected 03-191
P0601 - Internal Control Module
Memory Check Sum Error, P0604 -
Internal Controller Module Random
Access Memory (RAM) Error, P0605 -
Internal Controller Module ROM Test
Error, P0606 - ECM Processor 03-193
P0602 - ECM Programming Error 03-195
P0645 - A/C Clutch Relay Circuit 03-197
P1545 - Throttle Position Control
Malfunction 03-202
P2138 - Pedal Position Sensor
Performance 03-210
ON-VEHICLE SERVICE03-217
Engine Coolant Temperature (ECT)
Sensor 03-217
Description 03-217
Operation 03-217
Removal & Installation 03-217
Knock Sensor 03-218
Description 03-218
Operation 03-218
Removal & Installation 03-218
Oxygen Sensor 03-218
Description 03-218
Operation 03-218
Upstream Oxygen Sensor 03-219
Downstream Oxygen Sensor 03-219Removal & Installation - Upstream
Oxygen Sensor
03-219
Removal & Installation - Downstream
Oxygen Sensor 03-219
Crankshaft Position (CKP) Sensor 03-220
Description 03-220
Operation 03-220
Removal & Installation 03-220
Camshaft Position (CMP) Sensor 03-220
Description 03-220
Operation 03-221
Removal & Installation 03-221
Vehicle Speed Sensor 03-221
Description 03-221
Operation 03-221
Removal & Installation 03-221
Accelerator Sensor 03-221
Description 03-221
Operation 03-222
Removal & Installation 03-222
Manifold Absolute Pressure Sensor -
1.6L 03-222
Description 03-222
Operation 03-222
Removal & Installation 03-222
Air Flow Sensor - 1.8L 03-223
Description 03-223
Operation 03-223
Removal & Installation 03-223
Accelerator Pedal Position Sensor 03-224
Description 03-224
Operation 03-224
Removal & Installation 03-224
Electronic Throttle Control Actuator 03-225
Description 03-225
Operation 03-225
Removal & Installation 03-225
Engine Control Module (ECM) 03-226
Description 03-226
Operation 03-226
Removal & Installation 03-226
03–2Chery Automobile Co., Ltd.
Downloaded from www.Manualslib.com manuals search engine GENERAL INFORMATION
Description
The Engine Control Module (ECM) consists of a microcomputer and electrical connectors containing circuits for signal
input, output, power supply and ground. The ECM controls the engine functions.
The following are the input and output components monitored by the ECM. The monitored functions include compo-
nents from the engine, ignition, transaxle, air conditioning, or any other ECM supported subsystem.
ECM Inputs
•Brake Switch Sensor
• Refrigerant Pressure Sensor
• Camshaft Position (CMP) Sensor
• Crankshaft Position (CKP) Sensor
• Engine Coolant Temperature (ECT) Sensor
• Manifold Absolute Pressure (MAP) Sensor (1.6L)
• Air Flow Sensor (1.8L)
• Throttle Position Sensor (Integral with Electronic Throttle Control Actuator)
• Power Steering Switch
• Accelerator Pedal Position (APP) Sensor
• Knock Sensor
• Oxygen Sensor (Upstream & Downstream)
• Vehicle Speed Sensor
• Clutch Pedal Switch (Manual transaxle only)
ECM Outputs
• Canister Control Valve
• Fuel Injectors
• Fuel Pump Relay
• Electronic Throttle Control Actuator
• Ignition Coil
• A/C Compressor
• Cooling Fan
• Oxygen Sensor Heater (Upstream & Downstream)
Operation
The ECM monitors components and circuits, and tests them in various ways depending on the hardware, function,
and type of signal. For example, analog inputs, such as throttle position or engine coolant temperature are typically
checked for opens, shorts and out-of-range values. This type of monitoring is carried out continuously. Some digital
inputs like vehicle speed or crankshaft position rely on rationality checks - checking to see if the input value makes
sense at the current engine operating conditions. These types of tests may require monitoring several components
and can only be carried out under appropriate test conditions.
The ECM is a pre-programmed, microprocessor-based digital computer. It regulates ignition timing, air-fuel ratio,
emission control devices, charging system, certain transmission features, speed control, air conditioning compressor
clutch engagement and idle speed. The ECM can adapt its programming to meet changing operating conditions.
03
03–3Chery Automobile Co., Ltd.
Downloaded from www.Manualslib.com manuals search engine NUMBER ITEMFAILURE MODECORRECTION
10 Fuel Injector •
Unstable idle.
• Lack of engine power.
• Poor acceleration.
• Engine will not start.
• Plugged injector. Replace
11 TPS•
Poor acceleration.
• The MIL light will turn on. Replace
12 EVAP•
The engine base fuel closed-loop control self-learning will be
shut off.
• The engine idle air control self-learning will be shut off.
• Unstable idle or high idle. Replace
13 Fuel Pump •
Noisy fuel pump operation.
• Poor acceleration.
• Engine will not start. Replace
14 MAP•
Poor acceleration.
• Unstable idle.
• Rough engine operation. Replace
15 IAT•
Intake air temperature will be equal to the coolant
temperature. Replace
16 Cooling Fan •
High engine temperature.
• Poor air conditioner performance. Replace
17 Accelerator
Sensor •
Misfire
• Poor driving capability.
• Rough engine operation. Replace
Specifications
Torque Specifications
DESCRIPTION
TORQUE (N·m)
Engine Coolant Temperature (ECT) Sensor 20
Knock Sensor 20
Oxygen Sensors 45
Crankshaft Position (CKP) Sensor 10
Camshaft Position (CMP) Sensor 7
Air Flow Sensor Bolts 5
Engine Control Module (ECM) Bolts 10
Accelerator Pedal Position (APP) Sensor 11
Electronic Throttle Control Actuator 10
Vehicle Speed Sensor 10
Manifold Absolute Pressure (MAP) Sensor 6
GENERAL INFORMATION
03
03–5Chery Automobile Co., Ltd.