2009 CHERY TIGGO engine

Downloaded from www.Manualslib.com manuals search engine 10. CHECK CAMSHAFT
• Check the following:
There should be no accumulation of debris on the signal plate of camshaft rear end.
There should be no chip on the signal plate of camshaft rear end.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Remove debris and clean the signal plate of camshaft rear end or replace camshaft.
11 . CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to DTC Confirmation Procedure.
Is DTC 23 still present?
Ye s>>Replace the ECM.
No
>>The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
DIAGNOSIS & TESTING
03
03–509Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 25 - Atmosphere Pressure Sensor
DIAGNOSIS & TESTING
LTSMW030013T
03–510Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Check reference values between ECM terminals and ground under the following conditions:
ECM TERMINALNO. ITEM
CONDITION DATA VOLTAGE
65 Regulated sensor
supply
Ignition switch: ON -
4.8 - 5.2 V
69 Atmosphere
pressure sensor Sea level altitude: 0
M 3.7 - 4.3 V (101 kPa)
Sea level altitude: 600 M 95 kPa
Sea level altitude: 1200 M 3.2 - 3.8 V (88 kPa)
Sea level altitude: 1800 M 81 kPa
76 Sensor (GND) Ignition switch: ON 0 V
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION POSSIBLE CAUSE
25 Atmosphere
pressure sensor •
Ignition switch ON
position for 60
seconds
• Engine: Running •
Signal output is
over 4.6 V for 4 seconds
continuously
(amount to 114 kPa atmospherepressure).
• Signal output is
below 0.2 V for 4 seconds
continuously
(amount to 5.33 kPa atmospherepressure). •
Atmosphere
pressure 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 to normal operating temperature, then select view DTC and data stream.
• 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 03 Electronic Engine Controls for more information.
NOTE :
Before performing the following procedure, make sure that the ECM ground connection is in good condition.
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
DIAGNOSIS & TESTING
03
03–511Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Diagnostic Procedure
1.CHECK ATMOSPHERE PRESSURE SENSOR ELECTRICAL CONNECTOR
• Turn ignition switch off.
• Disconnect the atmosphere pressure sensor (atmo-
sphere pressure sensor is built-into) electrical con-
nector (1).
• 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.
2.CHECK ATMOSPHERE PRESSURE SENSOR POWER SUPPLY CIRCUIT
• Turn ignition switch on.
• Check supply voltage between atmosphere pres-
sure sensor connector E-058, terminal 1 and
ground in the atmosphere pressure sensor electrical
connector E-058.
• 4.8 - 5.2 V should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair circuit for an open or short in har-
ness or connectors.
If circuit is normal, go to the next step.
3.CHECK ATMOSPHERE PRESSURE SENSOR GROUND CIRCUIT FOR AN OPEN OR SHORT
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check harness continuity between following terminals.
ATMOSPHERE
PRESSURE SENSOR
TERMINAL ECM TERMINAL
57
6
DIAGNOSIS & TESTING
LTSMD030078
LTSMD030016
03–512Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine •Continuity should exist.
• Also check harness for short to power and short to ground.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace circuit for an open or short to power or short to ground in harness or connectors.
4.CHECK ATMOSPHERE PRESSURE SENSOR SIGNAL CIRCUIT
• Check harness continuity between ECM terminal 69 and atmosphere pressure sensor terminal 2.
• Continuity should exist.
• Also check harness for short to power and short to ground.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace harness or connectors.
5.CHECK ATMOSPHERE PRESSURE SENSOR
• Connect ECM connector.
• Connect atmosphere pressure sensor connector.
• With the X-431, select view data stream.
• Check sensor signal output.
TERMINAL NO. ITEM CONDITION DATA (DC
VOLTAGE)
65 Regulated sensor
supply
Ignition switch: ON -
4.8 - 5.2 V
69 Atmosphere
pressure sensor •
Sea level altitude:
0M 3.7 - 4.3 V
(101 kPa)
• Sea level altitude:
600 M 95 kPa
• Sea level altitude:
1200 M 3.2 - 3.8 V
(88 kPa)
• Sea level altitude:
1800 M 81 kPa
76 Sensor (GND) Ignition switch: ON 0 V
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace atmosphere pressure sensor.
DIAGNOSIS & TESTING
LTSMD030070
03
03–513Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 6.CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to DTC Confirmation Procedure.
Is DTC 25 still present?
Ye s>>Replace the ECM.
No
>>The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
DIAGNOSIS & TESTING
03–514Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 31 - Knock Sensor
DIAGNOSIS & TESTING
LTSMW030006T
03
03–515Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Check reference values between ECM terminals and ground under the following conditions:
ECM TERMINAL NO.ITEMTEST METHOD DATA (DC VOLTAGE)
62 Knock sensor•
Test Method 1: Knock at
cylinder with rubber
hammer
• Test Method 2: Knock at
sensor slightly Output signal voltage
should exist.
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION POSSIBLE CAUSE
31 Knock sensorAn excessive voltage from
the sensor is sent to ECM. •
Knock 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.
• Run engine for a while then 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 the ECM ground connection is in good condition.
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
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 E-208 (See Vehicle Wiring Harness Layout - Engine Room Harness (With Mit-
subishi 2.4L Engine) in Section 16 Wiring).
Is the ground connections OK?
Ye s>>Go to the next step.
No
>>Repair or replace ground connection.
DIAGNOSIS & TESTING
03–516Chery Automobile Co., Ltd.