2009 CHERY TIGGO check engine

Downloaded from www.Manualslib.com manuals search engine 2.CHECK CAMSHAFT POSITION (CMP) SENSOR ELECTRICAL CONNECTOR
• Disconnect the CMP electrical connector (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.
3.CHECK CAMSHAFT POSITION (CMP) SENSOR POWER SUPPLY CIRCUIT FOR AN OPEN OR SHORT
• Turn ignition switch on.
• Check supply voltage between CMP sensor con-
nector E-056, terminal 3 and ground in the sensor
electrical connector E-056.
• Battery voltage should exist.
Is the check result normal?
Ye s>>Go to step 5.
No
>>Go to the next step.
DIAGNOSIS & TESTING
LTSMD030080
LTSMD030014
03–506Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 4.DETECT MALFUNCTIONING PART
• Check the following:
Fuse 22, Fuse 12
Front fuse and relay box H3
Harness connectors A-102, E-105
Harness open or short between CMP sensor and fuse
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace malfunctioning parts.
5.CHECK THE CMP SENSOR GROUND CIRCUIT FOR AN OPEN
• Turn ignition switch off.
• Check harness continuity between following terminals.
CKP
SENSOR
TERMINAL TERMINAL CONTINUITY
1
Ground Yes
• Continuity should exist.
Is the check result normal?
Ye s>>Go to step 7.
No
>>Go to the next step.
6.DETECT MALFUNCTIONING PART
• Check harness for open or short between CMP sensor and ground.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace the circuit for an open or short in harness or connectors.
DIAGNOSIS & TESTING
03
03–507Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 7.CHECK CMP SENSOR INPUT SIGNAL CIRCUIT FOR AN OPEN OR SHORT
• Turn ignition switch on.
• Check voltage between CMP sensor terminal 2 and ground.
• 4.8 - 5.2 V should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace harness for open or short to power or short to ground between CMP sensor connec-
tor terminal 2 and ECM connector E-054, terminal 72.
If the harness is normal, go to the next step.
8.CHECK CMP SENSOR SIGNAL
• Connect ECM connector.
• Connect CMP sensor connector.
• Check signal voltage between CMP sensor terminal 2 and ground.
TERMINAL NO. ITEMCONDITIONDATA (DC VOLTAGE)
72 Camshaft Position (CMP)
sensor •
Ignition switch: ON
• Engine: Not cranking 4.8 - 5.2 V
• Engine: Cranking 0.4 - 3.0 V
• Engine: Idle 0.5 - 2.0 V
Is the check result normal?
Ye s>>Go to step 11.
No
>>Go to the next step.
9.CHECK CMP SENSOR
• Check resistance as table shown.
Remove the sensor.
Visually check the sensor for chipping.
Continuity should exist.
TERMINAL NO. RESISTANCE(25°C)
1&2 Except 0 or
1&3
2&3
Is the check result normal?
Ye s>>Replace the CMP sensor with a known good CMP sensor.
Monitor the CMP sensor signal on the KES-200 screen.
If the CMP sensor signals were normal, the system is OK.
If the CMP sensor signals were still irregular or missing, go to step 10.
No
>>Replace the CMP sensor.
DIAGNOSIS & TESTING
03–508Chery Automobile Co., Ltd.

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 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.