CHERY TIGGO 2009 Service Repair Manual

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 ELECTRICAL TROUBLESHOOTING TOOLS
Jumper Wires
•A jumper wire is used to create a temporary circuit.
Connect the jumper wire between the terminals of
a circuit to bypass a switch.
CAUTION:
Do not connect a jumper wire from the power
source line to a body ground. This may cause
burning or other damage to wiring harnesses
or electronic components.
Voltmeter
•The DC voltmeter is used to measure circuit volt-
age. A voltmeter with a range of 15 V or more is
used by connecting the positive (+) probe (red lead
wire) to the point where voltage will be measured
and the negative (-) probe (black lead wire) to a
body ground.
BESM010026
BESM010027T
16–6Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Ohmmeter
•The ohmmeter is used to measure the resistance
between two points in a circuit and to check for
continuity and short circuits.
CAUTION:
Do not connect the ohmmeter to any circuit
where voltage is applied. This will damage the
ohmmeter.
ELECTRICAL TROUBLESHOOTING TOOLS
BESM010028
16
16–7Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine ELECTRICAL REPAIR
Wire Repair
NOTE :
When splicing a wire, it is important that the correct gage be used.1. Remove one-half (1/2) inch of insulation from each wire that needs to be spliced.
2. Place a piece of adhesive lined heat shrink tubing on one side of the wire. Make sure the tubing will be long enough to cover and seal the entire repair area.
3. Place the strands of wire overlapping each other inside of the splice clip.
4. Using a crimping tool, crimp the splice clip and wires together.
NOTE :
Do not use acid core solder when making wiring repairs. 5. Solder the connection together using a soldering iron and rosin core type solder only.
6. Center the heat shrink tubing over the joint and heat using a heat gun. Heat the joint until the tubing is tightly sealed and sealant comes out of both ends of the tubing.
Fuse Replacement
•When replacing a fuse, be sure to replace it with
one of the same capacity. If a fuse fails again, the
circuit probably has a short and the wiring should
be checked.
• Be sure the negative battery terminal is discon-
nected before replacing a main fuse.
• When replacing a pullout fuse, use the fuse puller.
BESM010025
16–8Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine ELECTRICAL COMPONENTS
Battery Cable
•Before disconnecting connectors or removing elec-
trical parts, disconnect the negative battery cable.
Sensors, Switches, and Relays
•Handle sensors, switches and relays carefully. Do
not drop them or strike them against other objects.
LTSMW170001
BESM010024
16
16–9Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Connectors
Disconnecting Connectors
•When disconnecting 2 connectors, grasp the con-
nectors, not the wires.
• Connectors can be disconnected by pressing or
pulling the lock lever as shown.
ELECTRICAL COMPONENTS
BESM010018
BESM010019
16–10Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Locking Connector
•When locking connectors, listen for a click indicat-
ing they are securely locked.
Connector Terminals
•Pull lightly on individual wires to check that they
are secured in the terminal.
Connector/Terminal Replacement
•Use the appropriate tools to remove a terminal as
shown. While installing a terminal, be sure to insert
it until it locks securely.
• Insert a thin piece of metal from the terminal side
of the connector and with the terminal locking tab
pressed down, pull the terminal out from the
connector.
ELECTRICAL COMPONENTS
BESM010020
BESM010023
BESM010029
16
16–11Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine VEHICLE POWER DISTRIBUTION
GENERAL INFORMATION16-13
Description 16-13
Operation 16-13ELECTRICAL SCHEMATICS16-14
Electrical Schematics 16-14
16–12Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine GENERAL INFORMATION
Description
The power distribution system is designed to provide safe, reliable, centralized and convenient access to the distri-
bution of the electrical power required to operate all vehicle electrical and electronic systems.
The following components are used for power distribution:
•Battery
• Power Fuse Box
• Body Fuse and Relay Box
• Front Fuse and Relay Box
• Ignition Switch
• Fuses
• Circuit Breakers
• Relays
Operation
The power distribution system operates all electrical and electronic engine, transmission, chassis, safety, comfort and
convenience systems.
16
16–13Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine ELECTRICAL SCHEMATICS
Electrical Schematics
The power distribution electrical schematics include all wiring information detailed on the power side of all vehicle
circuits. This is helpful when attempting to troubleshoot a specific electrical failure, and shows connector pin-out infor-
mation and splices.
Power Distribution (Page 1 of 13)
LTSMW170021T
16–14Chery Automobile Co., Ltd.