2009 CHERY TIGGO oil pressure

Downloaded from www.Manualslib.com manuals search engine CONDITIONPOSSIBLE CAUSES CORRECTION
Oil Pressure Drop 1. Low oil level.
2. Faulty oil pressure sending unit.
3. Low oil pressure.
4. Clogged oil filter.
5. Thin or diluted oil.
6. Excessive bearing clearance.1. Check engine oil level.
2. Install new sending unit.
3. Check sending unit and main
bearing oil clearance.
4. Install new oil filter.
5. Change oil to correct viscosity.
6. Measure bearings for correct
clearance.
Oil Leaks 1. Misaligned or deteriorated
gaskets.
2. Loose fastener, broken or porous
metal part.
3. Misaligned or deteriorated cup or
threaded plug.1. Replace gasket.
2. Tighten, repair or replace the part.
3. Replace if necessary.
Oil Consumption Or Spark Plugs
Fouled 1. PCV system malfunction.
2. Worn, scuffed or broken rings.
3. Carbon in oil ring slots.
4. Rings fitted too tightly in grooves.
5. Worn valve guide(s).
6. Valve stem seal(s) worn or
damaged.1. Check system and repair if
necessary.
2. Hone cylinder bores. Install new
rings.
3. Install new rings.
4. Remove rings and check grooves.
If groove is not proper width, replace
piston.
5. Replace cylinder head.
6. Replace seal(s).
Cylinder Compression Pressure Test
•
The result of a cylinder compression pressure test
can be utilized to diagnose several engine malfunc-
tions.
• Ensure the battery is completely charged and the
engine starter motor is in good operating condition.
Otherwise the indicated compression pressures
may not be valid for diagnostic purposes.
Check engine oil level and add oil if neces-
sary.
Disconnect the spark plug wires.
Remove all spark plugs from engine (as spark plugs are being removed, check electrodes for
abnormal firing indicators fouled, hot, oily,
etc.).
Record cylinder number of each spark plug for future reference.
Disconnect fuel injector electrical connectors.
Be sure throttle blade is fully open during the compression check.
Insert compression pressure adaptor or the equivalent into each spark plug hole in cylinder head.
Crank engine until maximum pressure is reached on gauge. Record each cylinder pressure.
Compression should not be less than 880 kPa and not vary more than 25 percent from cylinder to cylinder.
If one or more cylinders have abnormally low compression pressures, repeat the compression test.
If the same cylinder or cylinders repeat an abnormally low reading on the second compression test, it could indicate the existence of a problem with the cylinder in question.
NOTE :
The recommended compression pressures are to be used only as a guide to diagnosing engine problems. An engine
should not be disassembled to determine the cause of low compression unless some malfunction is present.
DIAGNOSIS & TESTING
LTSM020191
02
02–165Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Cylinder Head Gasket Test
•A cylinder head gasket leak can be located between adjacent cylinders, between a cylinder and the adjacent
water jacket or from an oil passage to the exterior of the engine.
• Possible indications of the cylinder head gasket leaking between adjacent cylinders are:
Loss of engine power
Engine misfiring
Poor fuel economy
• Possible indications of the cylinder head gasket leaking between a cylinder and an adjacent water jacket are:
Engine overheating
Loss of coolant
Excessive steam (white smoke) emitting from exhaust
Coolant foaming
Engine Oil Pressure Test
1. Check the engine oil level.
2. Disconnect the oil pressure switch electrical connector.
3. Remove the oil pressure switch.
4. Install the mechanical oil pressure gauge.
5. Start the engine and warm to normal operating temperature.
6. After the engine has been warmed up, check that the oil pressure is within the specifications. Standard Oil Pressure: At 750 ± 50 RPM: 0.8 MPa
7. Stop the engine.
8. Remove the oil pressure gauge.
9. Apply the specified sealant to the thread (1) of oil pressure switch.
10. Install the oil pressure switch (Tighten: Oil pres- sure switch to 10 ± 2 N·m).
DIAGNOSIS & TESTING
LTSM020146
02–166Chery 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 Upper Balance Shaft
Removal & Installation
1 - Upper Balance Shaft Rear Bearing
2 - Upper Balance Shaft Front Bearing
3 - Upper Balance Shaft
4 - Oil Pressure Switch
5 - Front Cover Gasket
6 - Oil Pump Driven Gear
7 - Oil Pump Drive Gear
8 - Front Cover
9 - Upper Balance Shaft Oil Seal
10 - Crankshaft Front Oil seal
11 - Oil Filter Adapter Gasket
12 - Oil Filter Adapter13 - Pressure-Relief Valve
14 - Pressure Relief Spring
15 - Pressure-Relief Valve Seal
16 - Oil Filter
17 - Pressure Relief Valve Plug
18 - Plug
19 - Front Cover Bolt
20 - O-Ring
21 - Oil Pump Oil Seal
22 - Oil Pump Cover
23 - Lower Balance Shaft
24 - Lower Balance Shaft Rear Bearing
ON-VEHICLE SERVICE
LTSM020133
02–204Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Lower Balance Shaft
Removal & Installation
1 - Upper Balance Shaft Rear Bearing
2 - Upper Balance Shaft Front Bearing
3 - Upper Balance Shaft
4 - Oil Pressure Switch
5 - Front Cover Gasket
6 - Oil Pump Driven Gear
7 - Oil Pump Drive Gear
8 - Front Cover
9 - Upper Balance Shaft Oil Seal
10 - Crankshaft Front Oil Seal
11 - Oil Filter Adapter Gasket
12 - Oil Filter Adapter13 - Pressure-Relief Valve
14 - Pressure Relief Spring
15 - Pressure-Relief Valve Seal
16 - Oil Filter
17 - Pressure Relief Valve Plug
18 - Plug
19 - Front Cover Bolt
20 - O-Ring
21 - Oil Pump Oil Seal
22 - Oil Pump Cover
23 - Lower Balance Shaft
24 - Lower Balance Shaft Rear Bearing
ON-VEHICLE SERVICE
LTSM020133
02–208Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine •Using a press, press the piston pin (1) in under pressure. When the pressure is less than standard value,
replace piston pin and piston component and/or
replace connecting rod.standard value: 7,350-
17,200 Newtons
• Check to make sure the piston can rotate freely.
Piston Ring Installation
NOTE :
The compression rings have an identification mark (1)
on the top of the ring.
Piston Ring Identification Marks:
•No. 1 Ring - 1R
• No. 2 Ring - 2R
When installing piston ring, keep the mark upwards and
towards the top of piston.
• Size markings of pistons shown as the following:
SIZE IDENTIFICATION
Standard None
Increase 0.50 mm 50
Increase 1.00 mm 100
CAUTION:
Do not use a piston ring expander to install the oil control rings.
Oil Control Ring Installation
•Install the main ring of oil control ring into oil ring groove.
NOTE :
There is no difference between the upper and lower oil control rings.
ENGINE UNIT REPAIR
LTSM020113
LTSM020116
02
02–227Chery 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 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.