2009 CHERY TIGGO check engine

Downloaded from www.Manualslib.com manuals search engine 9.CHECK CMP SENSOR RESISTANCE
• Check resistance between the following CMP sensor terminals, component side:
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 13.
No
>>Replace CMP sensor.
DIAGNOSIS & TESTING
03
03–41Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 10.CHECK CKP SENSOR SIGNAL WAVE PATTERN
• Check signal between CKP sensor (1) terminal 1
and ground, terminal 2 and ground when engine is
running.
ENGINE ANALYZER (KES-200) CKP SENSOR SIGNAL
Is the CKP output signal normal?
Ye s>>Go to step 16.
No
>>Go to the next step.
DIAGNOSIS & TESTING
VISMD030200
03–42Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 11 .CHECK CKP SENSOR
• Remove the CKP sensor (1).
• Inspect and clean the CKP sensor and mounting
area for any condition that would result in an incor-
rect signal, such as damage, foreign material, or
excessive movement.
Is the sensor mounting area OK?
Ye s>>Go to the next step.
No
>>Repair or replace the sensor as
necessary.
12.CHECK CKP SENSOR RESISTANCE
• Check the resistance of the CKP sensor, component side.
TERMINAL NO. RESISTANCE

(25°C)
1&2 Approximately 1000

Is the check result normal?
Ye s>>Replace the CKP sensor with a known good CKP sensor.
Monitor the CKP sensor signal on the KES-200 screen.
If the CKP sensor signals were normal, the system is OK.
If the CKP sensor signals were still irregular or missing, go to step 14.
No
>>Replace CKP sensor.
DIAGNOSIS & TESTING
VISMD030200
03
03–43Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 13.CHECK THE CAMSHAFT AND CAMSHAFT SIGNAL PLATE
• Remove the cylinder head cover and timing belt cover (See Timing Belt Removal & Installation in Section 02
Engine).
• Check the installed clearance (See CMP Sensor Removal & Installation in Section 03 Electronic Engine Con-
trols).
• 0.8 - 1.2 mm should exist.
• Check the camshaft and camshaft signal plate for any condition that would result in an incorrect signal, such as
damage, become flexible, foreign material when rotate the camshaft.
Were any problems found?
Ye s>>Remove debris and clean the signal plate of camshaft rear end or replace camshaft.
Reinstall CMP sensor.
No
>>Go to step 16.
14.CHECK THE CRANKSHAFT AND CRANKSHAFT SIGNAL PLATE
• Check the installed clearance (See CKP Sensor Removal & Installation in Section 08 Transaxle & Transfer
Case).
• 0.8 - 1.2 mm should exist.
• Check the crankshaft and crankshaft signal plate for any condition that would result in an incorrect signal, such
as damage, become flexible, foreign material when rotate the crankshaft.
Were any problems found?
Ye s>>Remove debris and clean the signal plate of crankshaft rear end or replace crankshaft.
Reinstall the CKP sensor.
No
>>Go to the next step.
15.CHECK THE TIMING
• Check the timing for misalignment.
Is the timing misaligned?
Ye s>>Align the engine timing belt (See Timing Belt Removal & Installation in Section 02 Engine).
No
>>Go to the next step.
16.CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to DTC Confirmation Procedure.
Is DTC P0016 still present?
Ye s>>Replace the ECM.
NOTE : The Immobilizer control module must be matched to the new ECM (See ECM Removal & Instal-
lation in Section 03 Electronic Engine Controls).
No
>>The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
DIAGNOSIS & TESTING
03–44Chery 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.ITEMCONDITIONDATA (DC VOLTAGE)
18 Upstream oxygen sensor •
Engine is running
• Warm-up condition
• Keep the engine speed
2000 RPM Approximately 0.1 V - 0.9
V (change5-8times in10 seconds periodically)
28 (With EOBD)
4 (Without EOBD) Downstream oxygen
sensor heating --
36 Sensor (GND)•
Warm-up condition
• Idle speed Approximately 0 V
48 (With EOBD)
1 (Without EOBD) Upstream oxygen sensor
heating --
55 Downstream oxygen
sensor •
Engine is running
• Warm-up condition
• Keep the engine speed
2000 RPM Approximately 100 mV
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION POSSIBLE CAUSE
P0031 O
2sensor 1 heater control
circuit low Engine is running•
Oxygen sensor
• Harness or connectors
(The sensor circuit is open
or shorted)
• 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 and select record and erase data stream and DTC.
• 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.
• With the scan tool, select view DTCs in the ECM.
• 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 :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
DIAGNOSIS & TESTING
03
03–47Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Diagnostic Procedure
1.CHECK GROUND CONNECTIONS
• Turn ignition switch off.
• Loosen and retighten ground screws on the body (See Ground Inspection in Section 03 Electronic Engine Con-
trols).
• Inspect 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).
Is ground connections OK?
Ye s>>Go to the next step.
No
>>Repair or replace ground harness or connections.
2.CHECK O2SENSOR ELECTRICAL CONNECTOR
• Disconnect the O
2sensor (1) electrical connector
E-004.
• 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 O2SENSOR HEATER POWER SUPPLY CIRCUIT
• Turn ignition switch on.
• Check supply voltage between O
2sensor terminal
2 and ground in the O
2sensor electrical connector
E-004.
• Battery voltage should exist.
Is the check result normal?
Ye s>>Go to Step 5.
No
>>Go to the next step.
DIAGNOSIS & TESTING
BESM030017
LTSMD030029
03–48Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 4.DETECT MALFUNCTIONING PART
• Check the following:
With EOBD (1.6L and 1.8L) Fuse 25, fuse 12, fuse 27, fuse 24
Front fuse and relay box H2, H5, F3, A1, A13, G5
Harness between O
2sensor and fuse
Without EOBD (1.6L) Fuse 23, fuse 12, fuse 27, fuse 22, fuse 25
Front fuse and relay box H2, H5, H3, F3, A1, G2, G5
Harness between O
2sensor and fuse
Without EOBD (1.8L) Fuse 22, fuse 25, fuse 12, fuse 27, fuse 24
Front fuse and relay box H2, H3, H5, F3, A1, A13, G5
Harness between O
2sensor and fuse
• Repair or replace if necessary.
• With the X-431 scan tool, read ECM DTCs.
• Refer to DTC Confirmation Procedure.
Is DTC P0031 still present?
Ye s>>Go to the next step.
No
>>The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
5.CHECK O2SENSOR HEATER CONTROL CIRCUIT FOR OPEN OR SHORT
• Turn ignition switch off.
• Disconnect ECM connector.
• Check harness continuity between ECM terminal and O
2sensor terminal.
• Continuity should exist.
• Check sensor heater control circuit.
O2SENSOR TERMINAL
ECM Oxygen sensor
Upstream O
2sensor heater •
48 (With EOBD)
• 1 (Without EOBD) 1
• cCheck harness short to 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
03–49Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 6.CHECK O2SENSOR HEATER
• Check the resistance between O
2sensor heater terminals, component side.
TERMINAL NO. RESISTANCE
1 and 2 (including cable
and connector) Approximately 9

• Check the resistance between O
2sensor terminals, component side.
TERMINAL NO. RESISTANCE
1and3&4
(Continuity
should not exist)
4and1&2
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace O2sensor.
7.CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to DTC Confirmation Procedure.
Is DTC P0031 still present?
Ye s>>Replace the ECM.
NOTE : The Immobilizer control module must be matched to the new ECM (See ECM Removal & Instal-
lation in Section 03 Electronic Engine Controls).
No
>>The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
DIAGNOSIS & TESTING
03–50Chery Automobile Co., Ltd.