2009 CHERY TIGGO ignition

Downloaded from www.Manualslib.com manuals search engine Use the scan tool to perform a System Test if one applies to a failing component. A co-pilot, data recorder, and/or
oscilloscope should be used to help diagnose intermittent conditions.
CAUTION:
Before starting repairs which do not require battery power:
•Turn ignition switch off.
• Disconnect the negative battery terminal.
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.
Diagnostic Tools
1. Scan Tool X-431
2. Engine Analyzer (KES-200)
3. Digital Multimeter
4. Jumper Wire
Hardware Requirements
The hardware configuration of X-431 is as follows:
DIAGNOSIS & TESTING
03
03–459Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Diagnostic Trouble Code (DTC) List
DTCDTC DEFINITION
11 Oxygen Sensor
12 Air Flow Sensor
13 Air Temperature Sensor
14 Throttle Position Sensor
21 Coolant Temperature Sensor
22 Crankshaft Position Sensor
23 Camshaft Position Sensor
24 Speed Sensor
25 Atmosphere Pressure Sensor
31 Knock Sensor
36 Ignition Signal Terminal
41 Injector
44 Ignition Signal
54 Immobilizer Communication
61 Electronic 4AT Communication
64 ALT FR Signal
DIAGNOSIS & TESTING
03
03–461Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Check reference values between ECM terminals and ground under the following conditions:
TERMINAL NO.ITEMCONDITIONDATA (DC VOLTAGE)
12 Power supply for ECM Ignition switch: ON Battery Voltage (11 - 14 V)
25
34 ECM relayIgnition switch: OFF
More than a few seconds
after turning ignition switch OFF Battery Voltage (11 - 14 V)
64 Battery All timeBattery Voltage (11 - 14 V)
66 Ignition switch Ignition switch: ON Battery Voltage (11 - 14 V)
Ignition switch: OFF Approximately 0 V
DIAGNOSIS & TESTING
03
03–463Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Specification data are reference values and are measured between each terminal and ground.
TERMINAL NO.ITEMCONDITIONDATA (DC VOLTAGE)
13 ECM ground Ignition switch: ON Approximately 0 V
26 ECM ground Ignition switch: ON Approximately 0 V
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.
• Start the engine and warm it to normal operating temperature.
• With the scan tool, select view data stream.
• If the data stream is not detected, the condition is current. Go to Diagnostic Procedure Step 1.
• If the data stream is detected, the condition is intermittent (See Diagnosis & Testing Diagnostic Help in Section
03 Electronic Engine Controls).
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
Diagnostic Procedure
1.INSPECTION START
• Start engine.
Is engine running?
Ye s>>Go to step 8.
No
>>Go to step 2.
2.CHECK ECM POWER SUPPLY CIRCUIT - (1)
• Turn ignition switch OFF and then ON position.
• Check voltage between ECM terminal 66 and
ground.
• Battery voltage should exist.
Is the check result normal?
Ye s>>Go to step 5.
No
>>Go to step 3.
DIAGNOSIS & TESTING
LTSMD030074
03
03–465Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 3.DETECT MALFUNCTIONING PART
• Check the following:
Fuse 17
Harness connectors C-103, E-103, terminal 1
Front fuse and relay box connector A
Harness open or short between ECM and fuse
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace malfunctioning parts.
4.CHECK ECM POWER SUPPLY CIRCUIT - (2)
• Check voltage between ECM terminal 64 and ground.
• Battery voltage should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Check the following:
Harness connectors A-102, E-105, terminal 4
Front fuse and relay box connector A
Harness open or short between ECM and battery
5.CHECK GROUND CONNECTIONS
• Turn ignition switch off.
• Loosen and retighten ground screws on the body.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace ground connections.
6.CHECK ECM GROUND CIRCUIT FOR AN OPEN OR SHORT
• Disconnect ECM harness connector.
• Check harness continuity between ECM terminals 13, 26 and ground.
• Continuity should exist.
• Also check harness for short to power.
Is the check result normal?
Ye s>>Go to step 8.
No
>>Go to the next step.
7.DETECT MALFUNCTIONING PART
• Check harness for open or short between ECM terminals 13, 26 and ground.
• Repair open circuit or short to power in harness or connectors.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair circuit for an open or short to power in harness or connectors.
DIAGNOSIS & TESTING
03–466Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 8.CHECK ECM POWER SUPPLY CIRCUIT - (3)
• Turn ignition switch on and then off.
• Check voltage between ECM terminals

12, 25 and ground.
• Voltage: Turn ignition switch on battery voltage will be exist and after turning ignition switch off, battery voltage
will exist a few seconds, then

drop to approximately 0 V.
Is the check result normal?
Ye s>>Check the starting system.
No
>>Go to the next step.
9.CHECK STARTER RELAY SUPPLY VOLTAGE
• Turn ignition switch off. Wait for at least 10 seconds.
• Check voltage between ECM terminal 34 and ground.
• Battery voltage should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Go to step 11.
10.CHECK ECM POWER SUPPLY CIRCUIT - (4)
• Disconnect ECM harness connector.
• Disconnect front fuse and relay box harness connector F.
• Check harness continuity between ECM terminals 12, 25 and front fuse and relay box terminal F3.
• Continuity should exist.
• Also check harness for short to ground and short to power.
Is the check result normal?
Ye s>>Go to step 12.
No
>>Repair circuit for an open or short in harness or connectors.
11 .CHECK STARTER RELAY CIRCUIT
• Disconnect ECM harness connector.
• Disconnect front fuse and relay box harness connector A, G.
• Check harness continuity between ECM terminal 34 and front fuse and relay box terminal A1.
• Check harness continuity between front fuse and relay box terminal A1 and G5,
• Check harness continuity between front fuse and relay box terminal A13 and G5,
• Continuity should exist.
• Also check harness for short to ground and short to power.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair circuit for an open or short to ground or short to power in harness or connectors.
DIAGNOSIS & TESTING
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03–467Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine ECM TERMINAL NO.ITEMCONDITIONDATA (DC VOLTAGE)
52 Upstream oxygen sensor
heating •
Warm-up condition
• Idle 0-3V
• Engine is running
• Keep the engine speed
5000 RPM System voltage
59 Downstream oxygen
sensor •
Engine is running
• Warm-up condition
• Keep the engine speed
2000 RPM 0 - 0.8 V (recycle)
60 Upstream oxygen sensor •
Engine is running
• Warm-up condition
• Keep the engine speed
2000 RPM 0 - 0.8 V (recycle)
76 Sensor (GND)•
Warm-up condition
• Idle Approximately 0 V
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION POSSIBLE CAUSE
11 Oxygen sensor Engine is running•
Fuel quality
• Oxygen sensor
• Harness or connectors
• ECM
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 ECM.
• Start engine and warm it up to the normal operating temperature.
• Turn ignition switch off and wait at least 10 seconds.
• Start engine and keep the engine speed 2000 RPM for at least 1 minute.
• Let engine idle for 2 minutes and select view DTC.
• If DTC is detected, go to Diagnostic Procedure - Step 1.
• If the DTC is not detected, the DTC condition is intermittent (See Diagnosis & Testing Diagnostic Help in Sec-
tion 03 Electronic Engine Controls).
NOTE :
Before performing the following procedure, make sure that ECM ground connections are in good condition.
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
DIAGNOSIS & TESTING
03
03–471Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Diagnostic Procedure
1.CHECK GROUND CONNECTION.
• Turn ignition switch off.
• Loosen and retighten ground screws on the body (See Ground Inspection in Section 03 Electronic Engine Con-
trols).
• Inspect the ground connection B-201 (See Vehicle Wiring Harness Layout - Body Harness in Section 16 Wir-
ing).
• Inspect the ground connection E-208 (See Vehicle Wiring Harness Layout - Engine Control Harness (With MIT-
SUBISHI 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 connection.
2.CHECK UPSTREAM O2SENSOR ELECTRICAL CONNECTOR
• Disconnect the upstream O
2sensor (1) 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.
3.CHECK DOWNSTREAM O2SENSOR ELECTRICAL CONNECTOR
• Disconnect the downstream O
2sensor (2) 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
LTSM030004
VISMD030204
03–472Chery Automobile Co., Ltd.