ignition CHERY TIGGO 2009 Service User Guide

Downloaded from www.Manualslib.com manuals search engine 13.Disconnectandremovethefollowingelectricalconnectors:
€Coolanttemperaturesensor
€Camshaftpositionsensor
€Ignitioncoil
€Fourfuelinjectors
€Intakemanifoldairpressuresensor(1.6L)
€Airflowsensor(1.8L)
€Carboncanistersolenoidvalve
€Throttlebodycontrol
€A/Ccompressor
€Oilpressuresensor
€Powersteeringpumppressureswitch
€Generator
14.Removethepipefromthecanistercontrolvalve
(1).
15.Disconnecttheheaterhoses(1)onthevehicle.
16.Removethevacuumlinefromthebrakebooster
(2).
17.Removethedipstick.
18.Ifequippedwithamanualtransaxleremovethe
transaxleshiftcable(1).
19.Removethehydraulicpipefromtheclutchslave
cylinder.
ON-VEHICLESERVICE
LTSM020235
BESM020025
BESM080051
02–107CheryAutomobileCo.,Ltd.

Downloaded from www.Manualslib.com manuals search engine GENERAL INFORMATION
Description
The 2.4L in-line four cylinder engine has the following features:
•Single overhead camshaft
• Four valves per chamber cylinder head design
• Aluminum cylinder head
• Cast iron cylinder block
Operation
The 2.4L engine utilizes 4 valves-per-cylinder and a single-overhead-camshaft design. The engine uses an individual
coil ignition system and multi-point sequential injection. The cylinder block is made of cast iron and the bearing caps
are integrated into the lower cylinder block assembly. A cast iron oil pan is located at the bottom of the lower cylinder
block. The camshaft is mounted in the cylinder head and acts against the valve tappets to open and close the valves.
The camshaft is driven off the front of the cylinder head by the timing belt. The belt is driven by a sprocket that is
located on the crankshaft. The piston assembly is an aluminum piston with a cast iron connecting rod.
The aluminum cylinder head contains a single overhead camshaft with 4 valves-per-cylinder construction. The valves
are arranged in two in-line banks. The cylinder head incorporates powdered metal valve guides and seats. The cyl-
inder head is sealed to the block using a multi-layer steel head gasket and retaining bolts.
Specifications
2.4L General Engine Specifications
DESCRIPTION SPECIFICATION
Type In-Line, OHV, SOHC
Number of Cylinders 4
Compression Ratio 9:1
Output Power (kw) 95 / 5500 RPM
Stroke 100 mm
Cylinder Diameter 86.5 mm
Displacement 2351 cc
Firing Order 1-3-4-2
Max Torque (N·m) 198.1
2.4L Mechanical Specifications
ITEMSTANDARD LIMIT
Engine Timing Belt Tensioner Arm Protrusion
12-
Tensioner Arm Depression (98-196 N) ≤1-
Camshaft Cam Height Air-In
37.5037.00
Air-Out 36.9936.49
Shaft Diameter 45.0-
Cylinder Head Lower Surface Flatness
0.030.2
Surface Grinding Limit* Total Grinding of Cylinder Block and Cylinder Head -
0.2
Full Height 119.9 - 120.1-
02–151Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Torque Specifications
CAUTION:
When torquing a fastener in two steps, DO NOT use a torque wrench for the second step.
DESCRIPTIONTORQUE (N·m)
Alternator Adjusting Bolt 10
Alternator Bracket Bolt 24
Alternator Center Nut 45
Camshaft Position Sensor Bracket 14
Camshaft Position Sensor 10
Camshaft Position Sensor Cylinder 22
Crank Belt Gear 25
Ignition Coil 10
Locking Bolt 22
Spark Piston 25
Water Pump Belt Gear 9
Timing Belt Automatic Tensioner Bolt 24
Belt Gear of Balance Axle 46
Central Belt Wheel Bolt 36
Lower Balance Shaft Bolt 55
Timing Belt Cover Bolts 11
Tensioner Wheel Bolt 49
Tensioner Arm Bolt 22
Tensioner Bracket 49
Timing Belt Indicator 09
Timing Belt Rear Cover 11
Upper Balance Shaft Tensioner Bolt 19
Camshaft Pulley Bolt 90
Crankshaft Pulley Bolt 120
Connecting Bolt of Outflow Pipe 20
EGR Valve 22
Exhaust Manifold Nut (M8) 30
Exhaust Manifold Nut (M10) 50
Fuel Pressure Regulator 9
Fuel Return Pipe 09
Injector and Distribution Pipe 12
Intake Manifold Bolt 20
Intake Manifold Bracket 14
Thermostat Housing Bolt 24
Water Pump Bolts 14
Rocker Cover Bolt 4
Rocker and Camshaft Assembly Bolt 32
Trust Bearing Cover Bolt 19
GENERAL INFORMATION
02–153Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine DIAGNOSIS & TESTING
Engine Performance Diagnostics
CONDITIONPOSSIBLE CAUSES CORRECTION
Engine Does Not Start 1. Weak battery.
2. Corroded or loose battery
connections.
3. Faulty starter.
4. Faulty coil(s) or control unit.
5. Incorrect spark plug gap.
6. Contamination in fuel system.
7. Faulty fuel pump.
8. Incorrect timing.1. Test battery. Charge or replace if
necessary.
2. Clean and tighten battery
connections. Apply a coat of light
mineral grease to terminals.
3. Test starting system. Check for
codes. (Refer to Appropriate
Diagnostic Information)
4. Test and replace as needed.
(Refer to Appropriate Diagnostic
Information)
5. Set gap.
6. Clean system and replace fuel
filter.
7. Test fuel pump and replace as
needed. (Refer to Appropriate
Diagnostic Information)
8. Check for a skipped timing belt.
Engine Stalls Or Idles Rough 1. Idle speed too low.
2. Incorrect fuel mixture.
3. Intake manifold leakage.
4. Faulty ignition coil(s).1. Test minimum air flow. (Refer to
Appropriate Diagnostic Information)
2. (Refer to Appropriate Diagnostic
Information)
3. Inspect intake manifold, manifold
gasket, and vacuum hoses.
4. Test and replace if necessary.
(Refer to Appropriate Diagnostic
Information)
Engine Loss Of Power 1. Dirty or incorrectly gapped spark
plugs.
2. Contamination in fuel system.
3. Faulty fuel pump.
4. Incorrect valve timing.
5. Leaking cylinder head gasket.
6. Low compression.
7. Burned, warped, excessive
clearance, or pitted valves.
8. Plugged or restricted exhaust
system.
9. Faulty ignition coil(s).
10. Burned spark plugs.1. Clean spark plugs and set gap.
2. Clean system and replace fuel
filter.
3. Test and replace if necessary.
(Refer to Appropriate Diagnostic
Information)
4. Correct valve timing.
5. Replace cylinder head gasket.
6. Test compression of each
cylinder.
7. Replace valves.
8. Perform exhaust restriction test.
Install new parts.
9. Test and replace if necessary.
(Refer to Appropriate Diagnostic
Information)
10. Replace spark plugs.
DIAGNOSIS & TESTING
02
02–163Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine CONDITIONPOSSIBLE CAUSES CORRECTION
Engine Miss On Acceleration 1. Dirty or incorrectly gapped spark
plugs.
2. Contamination in fuel system.
7. Burned, warped, excessive
clearance, or pitted valves.
4. Faulty ignition coil(s).1. Clean spark plugs and set gap.
2. Clean fuel system and replace
fuel filter.
3. Replace valves.
4. Test and replace if necessary.
(Refer to Appropriate Diagnostic
Information)
Engine Miss At High Speed 1. Dirty or incorrect spark plug gap.
2. Faulty ignition coil(s).
3. Dirty fuel injector(s).
4. Contamination in fuel system.1. Clean spark plugs and set gap.
2. Test and replace if necessary.
(Refer to Appropriate Diagnostic
Information)
3. Test and replace if necessary.
(Refer to Appropriate Diagnostic
Information)
4. Clean system and replace fuel
filter.
Engine Mechanical Diagnostics
CONDITION
POSSIBLE CAUSES CORRECTION
Valve Train Noise 1. High or low oil level in crankcase.
2. Thin or diluted oil.
3. Thick oil.
4. Low oil pressure.
5. Worn cam lobe.
6. Worn valve guides.
7. Excessive runout of valve seats
on valve faces.1. Check and correct engine oil
level.
2. Change oil to correct viscosity.
3. Change engine oil and filter.
4. Check and correct engine oil
level.
5. Install new camshaft.
6. Replace cylinder head.
7. Grind valve seats and replace
valves.
Connecting Rod Noise 1. Insufficient oil supply.
2. Low oil pressure.
3. Thin or diluted oil.
4. Excessive bearing clearance.
5. Connecting rod journal out-of-
round.
6. Connecting rod out-of-round.
7. Misaligned connecting rods.
8. Connecting rod nuts loose.1. Check engine oil level.
2. Check engine oil level. Inspect oil
pump relief valve and spring.
3. Change oil to correct viscosity.
4. Measure bearings for correct
clearance. Repair if necessary.
5. Replace crankshaft or grind
surface.
6. Replace connecting rod.
7. Replace bent connecting rods.
8. Tighten the connecting rod nuts.
Main Bearing Noise 1. Insufficient oil supply.
2. Low oil pressure.
3. Thin or diluted oil.
4. Excessive bearing clearance.
5. Excessive end play.
6. Crankshaft journal out-of-round or
worn.
7. Loose flywheel or torque
converter.1. Check engine oil level.
2. Check engine oil level. Inspect oil
pump.
3. Change oil to correct viscosity.
4. Measure bearings for correct
clearance. Repair if necessary.
5. Check thrust bearing for wear on
flanges.
6. Replace crankshaft or grind
journals.
7. Tighten to correct torque.
DIAGNOSIS & TESTING
02–164Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 10.Disconnectandremovethefuelline(2)atthefuel
rail.
11.Removethefuelpressureregulatorretainingbolt
(1)andsetthefuelpressureregulatoraside.
(Tighten:Fuelpressureregulatorboltto9N·m)
12.Removetheairinlethoseandtheaircleanercase
assembly.
13.Removetheacceleratorcableboltfromthecylinderhead.
14.Disconnectandremovethefollowingelectricalconnectors:
Coolanttemperaturesensor
Crankshaftpositionsensor
Camshaftpositionsensor
Ignitioncoil
Fourfuelinjectors
Airflowsensor
Canistersolenoidvalve
EGRcontrolsolenoidvalve
Throttlepositionsensor
A/Ccompressor
Oilpressuresensor
Powersteeringpumppressureswitch
Generator
Upstreamoxygensensor
Knocksensor
Idleaircontrolmotor
ON-VEHICLESERVICE
LTSM040006
LTSM020160
02–184CheryAutomobileCo.,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 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 Electronic Engine Control Input & Output Device Failure Modes
NUMBER ITEMFAILURE MODECORRECTION
1 CKP•
Engine is hard to start.
• The engine RPM will be limited after the engine starts.
• The highest RPM is less than 3800.
• Excessive exhaust emissions.
• No ignition signal to the ECM.
• The tachometer does not work.
• Rough engine operation. Replace
2 CMP•
The fuel injector ON time may vary from 720 degrees to 360
degrees.
• The sensor output is not correct, the MIL light will turn on
when with the second revolution after the engine starts.
• Engine is hard to start.
• The highest RPM is less than 4000. Replace
3 APPS•
The MIL light will turn on.
• Poor acceleration.
• The engine RPM will be limited after the engine starts. Replace
4 ECT•
Engine hard to start when cold.
• Engine hard to start when hot.
• Poor driving capability.
• If the sensor circuit is shorted to power, the engine will run
under the default values.
• The temperature gauge indicates too high.
• The temperature gauge indicates too low.
• The cooling fan operates continuously on high speed.
• The high temperature warning lamp will flash when the IP
indicates low temperature. Replace
5 MAF•
The cooling fan will operate for approximately 60 seconds on
high speed after the ignition switch is turned off.
• Poor acceleration.
• Poor driving capability. Replace
6 O2 Sensor •
Poor fuel economy.
• Excessive exhaust emissions.
• Sluggish acceleration.
• Poor driving capability. Replace
7 Knock Sensor •
The engine produces an engine knock.
• Overheated engine.
• Excessive exhaust emissions.
• Poor fuel economy.
• Lack of engine power.
• Internal engine damage. Replace
8 ECM•
Unstable engine idle.
• Poor acceleration.
• Unable to start.
• High engine idle.
• The engine exhaust exceeds emission standards.
• Engine is hard to start.
• Air conditioner does not operate.
• Fuel injector control failure.
• Engine stalls out. Replace
9 Ignition Coil •
Unstable idle.
• Lack of engine power.
• Poor fuel economy

.
• Excessive exhaust emissions.
• Weak spark. Replace
GENERAL INFORMATION
03–4Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine ECM Connector Pin-Out Table
ECM PIN-OUT TABLE
PINCIRCUIT IDENTIFICATION PINCIRCUIT IDENTIFICATION
1 (With EOBD)
42Intake Air Temperature Sensor
Upstream Oxygen Sensor Heater
(Without EOBD)
2 Ignition Coil 2 43-
3 GND (Ignition) 44Switched Supply Voltage
4 (With EOBD)
45Switched Supply Voltage
Downstream Oxygen Sensor Heater
(Without EOBD)
5 Ignition Coil 1 46Canister Control Valve
6 Injector 2 47Injector 4
7 Injector 3 48Upstream Oxygen Sensor Heater (With
EOBD)
(Without EOBD)
8 Engine Speed Output 49-
9 Coolant Temperature Output 50Fan Relay Control
10 Fuel Consumption Output 51GND (Signal)
11 EPC Lamp 52-
12 Continuous Supply Voltage 53GND (Signal)
13 Ignition Switch 54 Electronic Throttle Control Actuator
14 EMS Relay (Main Relay) 55Downstream Oxygen Sensor
15 Crankshaft Position Sensor 56-
16 Accelerator Position Sensor 57-
17 Sensor (GND) 58Brake Switch
18 Upstream Oxygen Sensor 59Vehicle Speed Sensor
19 Knock Sensor 1 60A/C Middle Pressure Switch
20 Knock Sensor 2 61GND (Power)
21 Brake Switch 62-
22 -63Switched Supply Voltage
23 Accelerator Sensor 64 Electronic Throttle Control Actuator
24 -65 Electronic Throttle Control Actuator
25 -66 Electronic Throttle Control Actuator
26 -67 Electronic Throttle Control Actuator
27 Injector 1 68Fan Relay Control 2
28 Downstream Oxygen Sensor Heater
(With EOBD) 69Air Compressor Relay
(Without EOBD)
29 -70Fuel Pump Relay
30 -71Diagnostic Link K
31 MIL Lamp 72-
32 Regulated Sensor Supply 3 73Regulated Sensor Supply 2
33 Regulated Sensor Supply 1 74Clutch Pedal Switch
34 Crankshaft Position Sensor 75A/C Stand By
GENERAL INFORMATION
03–20Chery Automobile Co., Ltd.