wiring diagram CHERY TIGGO 2009 Service Repair Manual

Downloaded from www.Manualslib.com manuals search engine DIAGNOSING ELECTRICAL FAILURES
Performing Efficient Electrical Circuit Diagnosis and Troubleshooting
STEPDESCRIPTION
Step 1 Obtain detailed information about the conditions and the environment when the electrical
incident occurred.
Step 2 Operate the affected system, road test the vehicle if necessary.
Verify the parameter of the incident.
If the problem cannot be duplicated, refer to “Electrical Failure Simulation Tests”.
Step 3 Gather the proper diagnostic material including the following:
•
Electrical Power Supply Routing Diagram
• System Operation Descriptions
• Applicable Service Manual Sections
• Check for any Service Bulletins
Identify where to begin diagnosis based upon your knowledge of the system operation
and the customer comments.
Step 4 Inspect the system for mechanical binding, loose connectors or wiring damage.
Determine which circuits and components are involved and diagnose using the Electrical
Power Supply Routing Diagram and Harness Layouts.
Step 5 Repair the circuit or replace the component as necessary.
Step 6 Operate the system in all modes. Verify the system functions properly under all conditions.
Confirm you have not inadvertently created an additional new incident during your
diagnosis or repair steps.
Electrical Circuit Simulation Tests
Often the symptom is not present when the vehicle is brought in for service. If possible, re-create the conditions
present at the time of the incident. Doing so may help avoid a No Trouble Found Diagnosis. The following illustrates
tests to simulate the conditions/environment under which the owner experiences an electrical incident.
The tests are broken into the seven following topics:
•
Vehicle Vibration Test
• Heat Sensitive Test
• Freezing Test
• Water Intrusion Test
• Electrical Load Test
• Cold or Hot Start Up Test
• Voltage Drop Test
NOTE :
Always get a thorough description of the incident from the customer. It is important for simulating the conditions of
the problem.
Vehicle Vibration Test
The problem may occur or become worse while driving on a rough road or when the engine is vibrating (idle with A/C
on). In such a case, check for a vibration related condition. Refer to the following vehicle areas:
Connectors & Harness
• Determine which connectors and wiring harness would affect the electrical system you are inspecting. Gently
shake each connector and harness while monitoring the system for the incident you are trying to duplicate. This
test may indicate a loose or poor electrical connection.
NOTE :
Connectors can be exposed to moisture. It is possible for a thin film of corrosion to form on the connector terminals.
A visual inspection may not reveal this without disconnecting the connector. If the problem occurs intermittently, per-
haps the problem is caused by corrosion. It is a good idea to disconnect, inspect and clean the terminals on related
connectors in the system.
01–16Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Sensors & Relays
•Gently apply a slight vibration to sensors and relays in the system you are inspecting. This test may indicate a
loose or poorly mounted sensor or relay.
Engine Compartment
• There are several reasons a vehicle or engine vibration could cause an electrical complaint. Some of the things
to check for are:
Connectors not fully seated.
Wiring harness not long enough and is being stressed due to engine vibrations or rocking.
Wires laying across brackets or moving components.
Loose, dirty or corroded ground wires.
Wires routed too close to hot components.
• To inspect components under the hood, start by verifying the integrity of the ground connections (See Ground
Inspection described later). First, verify that the system is properly grounded. Then check for any loose connec-
tions by gently shaking the wiring or components as previously explained. Using the wiring diagrams, inspect
the wiring for continuity.
Behind The Instrument Panel
• An improperly routed or improperly clamped harness can become pinched during accessory installation. Vehicle
vibration can aggravate a harness which is routed along a bracket or near a mounting screw.
• An unclamped or loose harness can cause wiring to be pinched by seat components (such as slide guides)
during vehicle vibration. If the wiring runs under seating areas, inspect wire routing for possible damage or
pinching.
Heat Sensitivity Test
The customer’s concern may occur during hot weather or after the vehicle has sat for a short time. In such cases you
will want to check for a heat sensitive condition.
To determine if an electrical component is heat sensitive, heat the component with a heat gun or equivalent.
CAUTION:
Do not heat components above 60°C (140°F).
If the incident occurs while heat testing the component, replace or properly insulate the component as needed.
Freezing Test
The customer may indicate the incident goes away after the vehicle warms up (winter time). The cause could be
related to water freezing somewhere in the wiring/electrical system. There are two methods to check for this:
•The first method is to arrange for the owner to leave the vehicle overnight. Make sure it will get cold enough to
duplicate the complaint. Leave the vehicle parked outside overnight. In the morning, do a quick and thorough
diagnosis of those electrical components which could be affected.
• The second method is to put the suspect component into a freezer long enough for any water to freeze. Rein-
stall the part into the vehicle and check for a reoccurrence of the incident. If it occurs, repair or replace the
component as needed.
Water Intrusion Test
The incident may occur only during high humidity or in rainy/snowy weather. In such cases the incident could be
caused by water intrusion on an electrical part. This can be simulated by soaking the car or running it through a car
wash.
Electrical Load Test
The incident may be electrical load sensitive. Perform diagnosis with all accessories (including A/C, rear window
defogger, radio, fog lamps) turned on.
Cold or Hot Starting Test
On some occasions an electrical incident may occur only when the vehicle is started cold, or it may occur when the
vehicle is restarted hot shortly after being turned off. In these cases you may have to keep the vehicle overnight to
make a proper diagnosis.
DIAGNOSING ELECTRICAL FAILURES
01
01–17Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine GENERAL INFORMATION
Description
The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness
routing and retention, connector pin-out information and location views for the various wiring harness components,
splices and grounds.
Electrical Schematics
The electrical schematics are grouped into individual service manual chapters. If a component is most likely found in
a particular group, it will be shown complete (all wires, connectors, and pins) within that group. For example, the
Engine Control Module (ECM) is most likely to be found in Chapter 03 (Electronic Engine Controls), so it is shown
there complete. It can, however, be shown partially in another group if it contains some associated wiring.
Chery electrical schematics are designed to provide information regarding the vehicles wiring content. In order to
effectively use the wiring diagrams to diagnose and repair Chery vehicles, it is important to understand the following
features and characteristics:
•Diagrams are arranged such that the power (B+) side of the circuit is placed near the top of the page, and the
ground (B-) side of the circuit is placed near the bottom of the page.
• All switches, components, and modules are shown in the at rest position with the doors closed and the key
removed from the ignition switch.
• Components are shown with a solid line around the component.
• It is important to realize that no attempt is made on the diagrams to represent components and wiring as they
appear on the vehicle. For example, a short piece of wire is treated the same as a long one.
• Switches and other components are shown as simply as possible, with regard to function only.
16–2Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine International Symbols
International symbols are used throughout the wiring diagrams. These symbols are consistent with those being used
around the world. See How to Read Electrical Schematics in Section 01 General Information.
GENERAL INFORMATION
BESMW010001T
16
16–3Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine ELECTRICAL TROUBLESHOOTING
Troubleshooting Wiring Problems
When troubleshooting wiring problems there are six steps which can aid in the procedure. The steps are listed and
explained below. Always check for non-factory equipped components added to the vehicle before doing any diagno-
sis. If the vehicle is equipped with these items, disconnect them to verify these add-on items are not the cause of the
problem.
Perform the following when troubleshooting a wiring problem:1. Verify the problem.
2. Verify any related symptoms (do this by performing operational checks on components that are in the same circuit).
3. Analyze the symptoms (use the wiring diagrams to determine what the circuit is doing, where the problem most likely is occurring and where the diagnosis will continue).
4. Isolate the problem area.
5. Repair the problem area.
6. Verify the proper operation (for this step, check for proper operation of all items on the repaired circuit).
Testing For Voltage
1. Connect the ground lead of a voltmeter to a known good ground.
2. Connect the other lead of the voltmeter to the selected test point. The vehicle ignition may need to be turned ON to check voltage. Refer to the appropriate test procedure.
Testing For Continuity
1. Remove the fuse for the circuit being checked or, disconnect the battery.
2. Connect one lead of the ohmmeter to one side of the circuit being tested.
3. Connect the other lead to the other end of the circuit being tested (low or no resistance means good continuity).
Testing For A Short To Ground
1. Remove the fuse and disconnect all items involved with the fuse.
2. Connect a test light or a voltmeter across the terminals of the fuse.
3. Starting at the fuse block, wiggle the wiring harness about six to eight inches apart and watch the voltmeter/testlight.
4. If the voltmeter registers voltage or the test light glows, there is a short to ground in that general area of the wiring harness.
Intermittent and Poor Connections
Most intermittent electrical problems are caused by faulty electrical connections or wiring. It is also possible for a
sticking component or relay to cause a problem. Before condemning a component or wiring assembly, check the
following items:
1. Connectors are fully seated
2. Spread terminals, or terminal push out
3. Terminals in the wiring assembly are fully seated into the connector/component and locked into position
4. Dirt or corrosion on the terminals (any amount of corrosion or dirt could cause an intermittent problem)
5. Damaged connector/component casing exposing the item to dirt or moisture
6. Wire insulation that has rubbed through causing a short to ground
7. Some or all of the wiring strands broken inside of the insulation
8. Wiring broken inside of the insulation
16
16–5Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine VEHICLE WIRING HARNESS LAYOUT
GENERAL INFORMATION16-45
Description 16-45
Operation 16-45
How To Read Harness Layout Diagrams 16-45
VEHICLE HARNESS ROUTING MAPS16-46
Vehicle Harness Layout 16-46
Engine Control Harness - With 1.6L &
1.8L Engine 16-48
Engine Control Harness - With ACTECO
2.0L Engine 16-51
Engine Control Harness - With
MITSUBISHI 2.4L Engine 16-53 Engine Room Harness - With 2.0L & 2.4L
Engine 16-55
Main Harness 16-58
Body Harness 16-61
Roof Harness 16-63
Front Door LH Harness 16-64
Front Door RH Harness 16-65
Rear Door LH Harness 16-66
Rear Door RH Harness 16-67
Back Door Harness 16-68
Restraints Harness 16-69
16–44Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine GENERAL INFORMATION
Description
This section provides illustrations identifying component, ground and splice locations in the vehicle.
To help locate all electrical components on the drawings, the following harness layouts use a map style grid:
•Engine Room Harness (1.6L & 1.8L/2.0L & 2.4L)
• Engine Control Harness (1.6L & 1.8L/2.0L & 2.4L)
• Main Harness
• Body Harness
• Front Door LH Harness
• Front Door RH Harness
• Rear Door LH Harness
• Rear Door RH Harness
• Back Door Harness
• Roof Harness
• Restraints Harness
Operation
Use the wiring harness diagrams in each harness section for component, ground and splice identification. Refer to
the appropriate index for the specific vehicle harness.
How To Read Harness Layout Diagrams
1. Find the desired connector number on the connector list.
2. Find the grid reference.
3. On the drawing, find the crossing of the grid reference column letter and row number.
4. Find the connector number in the crossing zone.
5. Follow the line (if used) to the connector.
16
16–45Chery Automobile Co., Ltd.