2009 CHERY TIGGO check engine

Downloaded from www.Manualslib.com manuals search engine 5. Disconnect the vacuum hose (1) from the checkvalve on the power brake booster.
6. Slide the power brake booster forward until its mounting studs clear the dash panel, then remove it through the engine compartment.
7. Installation is in the reverse order of removal.
ON-VEHICLE SERVICE
LTSM120004
12
12–17Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Rotor Runout
1. Install standard wheel mounting nuts, flat side torotor, on all the wheel studs (2). Progressively
tighten the nuts in a crisscross pattern to 110 N·m.
2. Mount a dial indicator (1), with wheel, or equiva- lent, to the knuckle. Position the dial indicator
wheel to contact the rotor braking surface approxi-
mately 10 mm from the outer edge of the rotor.
3. Slowly rotate the brake rotor (3) checking lateral runout, marking the low and high spots. Record
these measurements.
4. Check and record the runout on the opposite side of the rotor in the same fashion, marking the low
and high spots.
5. Compare runout measurement to specification.
6. If runout is in excess of specifications, check the lateral runout of the hub face.
BRAKE ROTOR ROTOR
THICKNESS MINIMUM ROTOR
THICKNESS ROTOR DIAMETER ROTOR RUNOUT
Front Rotor 25 mm23 mm265 mm 0.1 mm
Rear Brake Rotor
Removal & Installation
1. Raise and support the vehicle.
2. Remove the wheel mounting nuts and the tire and wheel assembly.
(Tighten: Wheel mounting nuts to 110 N·m)
3. Remove rear caliper (1) (See Rear Caliper Removal & Installation in Section 12 Brakes).
4. Slide the rear brake rotor (3) off the hub and bear- ing.
5. Installation is in the reverse order of removal.
Inspection
Excessive runout or wobble in a rotor can increase pedal travel due to piston knock-back. This increases guide pin
sleeve wear due to the tendency of the caliper to follow the rotor wobble.
Braking Surface Inspection
Light braking surface scoring and wear is acceptable. If heavy scoring or warping is evident, the rotor must be resur-
faced or replaced. Excessive wear and scoring of the rotor can cause improper lining contact on the rotor’s braking
surface. If the ridges on the rotor are not removed before new brake pads are installed, improper wear of the shoes
will result. Some discoloration or wear of the rotor surface is normal and does not require resurfacing when linings
are replaced. If cracks or burned spots are evident, the rotor must be replaced.
ON-VEHICLE SERVICE
LTSM120042
LTSM120043
12–22Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Rotor Minimum Thickness
Measure the rotor thickness (1) at the center of the
brake pad contact surface. Replace the rotor (2) if it is
worn below minimum thickness or if machining the rotor
will cause its thickness to fall below specifications.
CAUTION:
Do not machine the rotor if it will cause the rotor to fall below minimum thickness.
Rotor Runout
1. Install standard wheel mounting nuts, flat side to rotor, on all the wheel studs. Progressively tighten the nuts ina crisscross pattern to 110 N·m.
2. Mount a dial indicator, with wheel, or equivalent, to the knuckle. Position the dial indicator wheel to
contact the rotor braking surface approximately 10
mm from the outer edge of the rotor.
3. Slowly rotate the brake rotor checking lateral runout, marking the low and high spots. Record
these measurements.
4. Check and record the runout on the opposite side of the rotor in the same fashion, marking the low
and high spots.
5. Compare runout measurement to specification.
6. If runout is in excess of specifications, check the lateral runout of the hub face.
BRAKE ROTOR ROTOR THICKNESS MINIMUM ROTOR
THICKNESS ROTOR DIAMETER
Rear Rotor 9 mm7 mm303 mm
Rear Brake Backing Plate
Removal & Installation
1. Raise and support the vehicle.
2. Remove the wheel mounting nuts and the tire and wheel assembly.
(Tighten: Wheel mounting nuts to 110 N·m)
ON-VEHICLE SERVICE
BESM120004
LTSM120036
12
12–23Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine •After installation and before moving the vehicle, pump the brake pedal several times to set the pads to the
brake rotor.
• Check and adjust the brake fluid level in the reservoir as necessary.
• Road test the vehicle and make several stops to wear off any foreign material on the brakes and to seat the
brake pads.
• After installation and before moving the vehicle, pump the brake pedal several times to set the pads to the
brake rotor.
Inspection
Visually inspect brake pads for uneven lining wear. Also inspect for excessive lining deterioration. Check the clear-
ance between the tips of the wear indicators (if equipped) on the pads and the brake rotors. If a visual inspection
does not adequately determine the condition of the lining, a physical check will be necessary. To check the amount
of lining wear, remove the disc brake pads from the vehicle. Measure the brake pad minimum thickness. Brake pads
must be replaced when usable material on a brake pad lining measured at its thinnest point measures one millimeter
or less. Replace both disc brake pads (inboard and outboard) at each caliper. It is also necessary to replace the pads
on the opposite side of the vehicle as well as the pads failing inspection to maintain proper braking characteristics.
If the brake pad assemblies do not require replacement, be sure to reinstall the brake pads in the original position
from which they were removed.
Rear Brake Pads
Removal & Installation
1. Raise and support the vehicle.
2. Remove the wheel mounting nuts and the tire and wheel assembly.
(Tighten: Wheel mounting nuts to 110 N·m)
NOTE :
In some cases, it may be necessary to retract the caliper piston in its bore a small amount in order to provide suf-
ficient clearance between the pads and the rotor. 3. Remove the lower rear caliper guide pin bolt (2). (Tighten: Rear caliper guide pin bolt to 23 N·m)
CAUTION: When moving rear brake caliper
upward, use extreme care not to damage or
overextend the flex hose.
4. Rotate the caliper (1) upward hinging off the upper guide pin bolt. Rotate the caliper upward just
enough to allow brake pad removal.
5. Slide the rear brake pads off of the brake caliper adapter.
ON-VEHICLE SERVICE
LTSM120044
LTSM120018
12
12–25Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Inspection
Visually inspect brake pads for uneven lining wear. Also inspect for excessive lining deterioration. Check the clear-
ance between the tips of the wear indicators (if equipped) on the pads and the brake rotors. If a visual inspection
does not adequately determine the condition of the lining, a physical check will be necessary. To check the amount
of lining wear, remove the disc brake pads from the vehicle. Measure the brake pad minimum thickness. Brake pads
must be replaced when usable material on a brake pad lining measured at its thinnest point measures one millimeter
or less. Replace both disc brake pads (inboard and outboard) at each caliper. It is also necessary to replace the pads
on the opposite side of the vehicle as well as the pads failing inspection to maintain proper braking characteristics.
If the brake pad assemblies do not require replacement, be sure to reinstall the brake pads in the original position
from which they were removed.
ON-VEHICLE SERVICE
12–26Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine DIAGNOSIS & TESTING
Diagnostic Help
Diagnostic Help
1. The X-431 scan tool connects to the Data Link Connector (DLC) and communicates with the vehicle electronicmodules through the vehicle data circuits.
2. Confirm that the malfunction is current and carry-out the diagnostic tests and repair procedures.
3. If the Diagnostic Trouble Code (DTC) cannot be deleted, it is a current fault.
4. Use a digital multimeter to perform voltage readings on electronic systems.
5. Refer to any Technical Bulletins that may apply to the failure.
6. Visually inspect the related electrical wiring harness.
7. Perform a voltage drop test on the related circuits between the suspected component and the ABS module.
8. Inspect and clean all ECM, ABS, engine, and chassis grounds that are related to the most current DTC.
9. If numerous trouble codes were set, use an electrical schematic and look for any common ground circuits or voltage supply circuits that may apply to the DTC.
10. For any wheel speed sensor DTCs, inspect for dirt/metal debris.
11. Use the scan tool to perform a System Test if one applies to the failed component.
Intermittent DTC Troubleshooting
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.
• Wiggle the related electrical wiring harness and connectors while looking for an interrupted signal on the
affected circuit.
• If possible, try to duplicate the conditions under which the DTC set.
• 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 dam-
age, foreign material.
• A data recorder, and/or oscilloscope should be used to help diagnose intermittent conditions.
• Remove the ABS module from the troubled vehicle and install in a new vehicle and test. If the DTC cannot be
deleted, the ABS module is malfunctioning. If the DTC can be deleted, return the ABS module 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 affect 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 affect 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.
12
12–45Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine On Board Diagnostic Logic
•Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION POSSIBLE CAUSE
C1101 Battery Voltage High
(Above 18 V)
Ignition switch: ON ABS module
detected that the
battery voltage is
excessively high.
•
Charging system
• ABS module
C1102 Battery Voltage Low
(Below 9.5 V) ABS module
detected that the
battery voltage is
excessively low.•
Battery
• Harness is shorted
• Charging system
• ABS module
DTC Confirmation Procedure:
Before performing the following procedure, confirm that battery voltage is more than 12 V.
• Turn ignition switch off.
• Connect the X-431 scan tool to the Data Link Connector (DLC) - use the most current software available.
• Turn ignition switch on.
• With the scan tool, record and erase stored DTCs in the ABS module.
• Start the engine and warm it to normal operating temperature.
• Turn ignition switch off and wait for a few seconds.
• Turn ignition switch ON then select view DTC.
• If the DTC is detected, the DTC condition is current. Go to Diagnostic Procedure - Step 1.
• If the DTC is not detected, the DTC condition is intermittent (See Diagnostic Help and Intermittent DTC Trou-
bleshooting in Section 12 Brakes for more information.
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
Diagnostic Procedure
1.CHECK GROUND CONNECTIONS
• Turn ignition switch off.
• Loosen and retighten ground screws on the body (See Ground Inspection in Section 12 Brakes).
• The ground connections E-207 and E-208 mounting position (See Vehicle Wiring Harness Layout - Engine
Room Harness With 1.6L & 1.8L Engine in Section 16 Wiring).
• The ground connections A-201 and A-206 mounting position (See Vehicle Wiring Harness Layout - Engine
Room Harness With 2.0L & 2.4L Engine in Section 16 Wiring).
Are the ground connections OK?
Ye s>>Go to the next step.
No
>>Repair or replace the ground connections.
2.CHECK ABS MODULE ELECTRICAL CONNECTOR
• Disconnect the ABS module electrical connector.
• Inspect the electrical connector for damage.
Is the electrical connector OK?
Ye s>>Go to the next step.
No
>>Repair or replace the electrical connector as necessary.
DIAGNOSIS & TESTING
12
12–51Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 3.CHECK ABS MODULE POWER SUPPLY
• Turn ignition switch on
• Check ABS module power supply between terminal
4 and terminal 8, 24 in the ABS module electrical
connector A-020 or E-002 terminal side.
Is the voltage between 9.4 - 17 V?
Ye s>>Replace the ABS module.
No
>>If the voltage is less than 9.4 V, go to
step 4.
If the voltage is more than 17 V, go to
step 7.
4.CHECK SYSTEM VOLTAGE
• Connect ABS module connector.
• Start the engine, raise the speed over 1000 RPM.
• Measure the charging voltage at the battery positive and negative terminals.
Is the voltage less than 9.4 V?
Ye s>>Replace the AC generator.
No
>>Go to the next step.
5.CHECK THE BATTERY
• Start the engine, raise the engine speed to over 1000 RPM for a few minutes.
• Turn ignition switch off.
• Measure the voltage drop at the battery positive and negative terminals while cranking the engine.
• Battery voltage should be more than approximately 9.4 V.
Is the check result normal?
Ye s>>Go to step 6.
No
>>Charge or replace the battery.
6.CHECK ABS MODULE POWER SUPPLY CIRCUIT
• Measure the continuity between the ABS module terminal 4 and the battery positive terminal.
• Continuity should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Check fuse.
Check the harness.
Check all related components.
DIAGNOSIS & TESTING
LTSMD120001
12–52Chery Automobile Co., Ltd.