2009 CHERY TIGGO ignition

Downloaded from www.Manualslib.com manuals search engine 3. Disconnect the electronic throttle control actuatorconnector.
4. Remove two hoses on electronic throttle control actuator.
5. Remove four electronic throttle control actuator mounting bolts.
(Tighten: Electronic throttle control actuator bolts to
10 N·m)
6. Remove the throttle control actuator carefully.
7. Installation is in the reverse order of removal.
Engine Control Module (ECM)
Description
The Engine Control Module (ECM) for this model is serviced only as a complete unit.
Operation
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.
Removal & Installation
1. Disconnect the negative battery cable.
2. Remove the glove box (See Instrument Panel Removal & Installation in Section 15 Body).
3. Disconnect the ECM electrical connector.
4. Remove the ECM retaining bolts (1). (Tighten: ECM retaining bolts to 10 N·m)
5. Remove the ECM.
6. Installation is in the reverse order of removal.
Installation Notes:
•
NOTE :
The Immobilizer control module must be matched to
the new ECM before the vehicle will start.
Matching Immobilizer Control Module to New
Engine Control Module (ECM)
Perform the following to match the Immobilizer control
module to the new ECM: With the X-431 scan tool, choose T11 series.
Choose immobilize.
Choose input code.
Input the safety code.
Click the small keyboard.
Click OK.
Choose Immobilizer adapt.
Choose read Immobilizer to ECM immedi-
ately.
Click OK.
ON-VEHICLE SERVICE
BESM030022
LTSM030025
03–226Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine GENERAL INFORMATION
Description
The Engine Control Module (ECM) utilizes integrated circuitry and information carried on the Controller Area Network
(CAN) data bus along with many hard wired inputs to monitor many sensors and switches inputs throughout the
vehicle. In response to those inputs, the internal circuitry and programming of the ECM allow it to control and inte-
grate many electronic functions and features of the vehicle through both hard wired outputs and the transmission of
electronic message outputs to other electronic modules in the vehicle over the CAN data bus.
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
• A/C Pressure Switch
• Camshaft Position (CMP) Sensor
• Crankshaft Position (CKP) Sensor
• Engine Coolant Temperature (ECT) Sensor
• Intake Air Temperature (IAT) Sensor
• Air Flow Sensor
• Throttle Position Sensor (integral with Electronic Throttle Control Actuator)
• Power Steering Switch
• Accelerator Pedal Position (APP) Sensor
• Knock Sensor
• Oxygen Sensor (Upstream & Downstream)
• 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 heating coil (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
03–229Chery 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
6O
2Senser •
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
03–230Chery 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 59-
19 Knock Sensor 1 60A/C Middle Pressure Switch
20 Knock Sensor 2 61GND (Power)
21 Brake Switch 62CAN-H
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 74-
34 Crankshaft Position Sensor 75A/C Stand By
GENERAL INFORMATION
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03–245Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine DIAGNOSIS & TESTING
Diagnostic Help
1. Confirm that the malfunction is current and carry-out the diagnostic tests and repair procedures.
2. If the Diagnostic Trouble Code (DTC) cannot be deleted, it is a current fault.
3. Use a digital multimeter to perform voltage readings on the Electronic Fuel Injection (EFI) system.
4. Program the vehicle Immobilizer control module whenever the Engine Control Module (ECM) is replaced.
5. The scan tool connects to the Data Link Connector (DLC) and communicates with the ECM.
6. If the failure is intermittent perform the following:•Check for loose connectors.
• Look for any chafed, pierced, pinched, or partially broken wires.
• Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.
• Look for the data to change or for the DTC to reset during the wiggle test.
• Look for broken, bent, pushed out or corroded terminals.
• Inspect the sensor and mounting area for any condition that would result in an incorrect signal, such as
damage or foreign material.
7. Remove the ECM from the troubled vehicle and install in a new vehicle and test. If the DTC can not be deleted, the ECM is malfunctioning. If the DTC can be deleted, return the ECM to the original vehicle.
Ground Inspection
Ground connections are very important to the proper operation of electrical and electronic circuits. Ground connec-
tions are often exposed to moisture, dirt and other corrosive elements. The corrosion (rust) can become an unwanted
resistance. This added resistance can alter the way a circuit works.
Electronically controlled circuits are very sensitive to proper grounding. A loose or corroded ground can drastically
affect an electronically controlled circuit. A poor or corroded ground can effect the circuit. Perform the following when
inspecting a ground connection:
1. Remove the ground bolt or screw.
2. Inspect all mating surface for tarnish, dirt, rust, etc.
3. Clean as required to assure good contact.
4. Reinstall bolt or screw securely.
5. Inspect for add-onaccessories which may be interfering with the ground circuit.
6. If several wires are crimped into one ground eyelet terminal, check for proper crimps. Make sure all of the wires are clean, securely fastened and providing a good ground path. If multiple wires are crimped to one eyelet, make
sure no excess wire insulation has been crimped creating a bad ground.
Electronic Throttle Control Actuator Self-Learning Operation Introduction
EPC Lamp Control Strategy
The EPC lamp will be on for a few seconds and turn off after the ignition switch is turned on and the engine is not
running. After the engine started, the EPC lamp will go off if the DTC is not existent in ECM. If the internal self-check
failed, the EPC lamp will continue to light.
Electronic Throttle Control Actuator Self-Learning Condition
•Engine stopped and the ignition switch is on.
• Vehicle speed is 0 km/h.
• The Engine Coolant Temperature (ECT) is between 5.25°C and 100.5°C.
• The intake air temperature is more than 5.25°C.
• The accelerator pedal fully released.
• Battery voltage is more than 12 V.
Electronic Throttle Control Actuator Self-Learning Operating Procedure
Turn the ignition switch on for 10 seconds, then turn the ignition switch off. During the procedure, do not operate any
other components.
03
03–247Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Self-Learning Components
Perform the self-learning process when the following repairs have been made:
•Replaced the ECM
• ECM which was disconnected and reconnected
• Replaced the Accelerator Pedal
• Replaced the Electronic Throttle Control Actuator
Self-Learning Operating Procedure
Turn the ignition switch on for 10 seconds, then turn the ignition switch off. During the procedure, do not operate any
other components.
Self-Learning Condition
The self-learning condition as the Electronic Throttle Control Actuator Self-Learning Condition.
CAUTION:
Make sure that the Electronic Throttle Control Actuator self-learning process lasts for at least 10
seconds according to the Electronic Throttle Control Actuator self-learning condition. If the self-
learning process fails, the engine can’t be started or the EPC lamp will be on. If this condition
occurs, perform the Self-Learning operating again after the DTCs be erased in ECM.
Diagnostic Tools
•Scan Tool X-431
• Engine Analyzer KES-200
• Digital Multimeter
• Jumper Wire
DIAGNOSIS & TESTING
03–248Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine DTCDTC DEFINITION
P0203 Cylinder 3 - Injector Circuit
P0204 Cylinder 4 - Injector Circuit
P0219 Engine Overspeed Condition
P0221 Throttle/Pedal Position Sensor/Switch B Range/Performance
P0222 Throttle/Pedal Position Sensor/Switch B Low Input
P0223 Throttle/Pedal Position Sensor/Switch B High Input
P0261 Cylinder 1 - Injector Circuit Low
P0262 Cylinder 1 - Injector Circuit High
P0264 Cylinder 2 - Injector Circuit Low
P0265 Cylinder 2 - Injector Circuit High
P0267 Cylinder 3 - Injector Circuit Low
P0268 Cylinder 3 - Injector Circuit High
P0270 Cylinder 4 - Injector Circuit Low
P0271 Cylinder 4 - Injector Circuit High
P0300 Random/Multiple Cylinder Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0304 Cylinder 4 Misfire Detected
P0318 Rough Road SensorASignal Circuit
P0321 Ignition/Distributor Engine Speed Input Circuit Range/Performance
P0322 Ignition/Distributor Engine Speed Input Circuit No Signal
P0324 Knock Control System Error
P0327 Knock Sensor 1 Circuit Low Input
P0328 Knock Sensor 1 Circuit High Input
P0340 Camshaft Position Sensor Circuit
P0341 Camshaft Position Sensor Circuit Range/Performance
P0342 Camshaft Position Sensor Circuit Low Input
P0343 Camshaft Position Sensor Circuit High Input
P0420 Catalyst System, Bank 1 Efficiency Below Threshold
P0444 Evaporative Emission System Purge Control Valve Circuit Open
P0458 Evaporative Emission System Purge Control Valve Circuit Low
P0459 Evaporative Emission System Purge Control Valve Circuit High
P0480 Cooling Fan 1 Control Circuit
P0481 Cooling Fan 2 Control Circuit
P0501 Vehicle Speed Sensor Range/Performance
P0506 Idle Control System RPM Lower than Expected
P0507 Idle Control System RPM High than Expected
P0508 Idle Air Control System Circuit Low
P0509 Idle Air Control System Circuit High
P0511 Idle Air Control Circuit
P0532 A/C Refrigerant Pressure Sensor Circuit Low Input
P0533 A/C Refrigerant Pressure Sensor Circuit High Input
DIAGNOSIS & TESTING
03
03–251Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Check reference values between ECM terminals and ground under the following conditions:
ECM Power Supply Circuits
TERMINAL NO.ITEMCONDITIONDATA (DC VOLTAGE)
12 Battery -Battery Voltage (11 - 14 V)
13 Ignition switch Ignition switch: ON Battery Voltage (11 - 14 V)
Ignition switch: OFF Approximately 0 V
14 ECM main relay •
Ignition switch: OFF
• More than a few
seconds after turning ignition switch OFF Battery Voltage (11 - 14 V)
44 Power supply for ECM Ignition switch: ON Battery Voltage (11 - 14 V)
45
63
DIAGNOSIS & TESTING
03
03–255Chery Automobile Co., Ltd.