2009 CHERY TIGGO ABS

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 DIAGNOSIS & TESTING Ground Inspection in Section
03 Electronic Engine Controls).
• 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 connections.
2.CHECK MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR ELECTRICAL CONNECTOR
• Disconnect the MAP sensor (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.
DIAGNOSIS & TESTING
VISMD030201
03
03–75Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 3.CHECK THE MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR POWER SUPPLY
• Turn ignition switch on.
• Check MAP sensor supply between MAP sensor
connector terminal 1 and 3.
• 5 V should exists.
Is the check result normal?
Ye s>>Go to step 5.
No
>>Go to the next step.
4.CHECK THE MAP SENSOR POWER SUPPLY CIRCUIT FOR AN OPEN OR SHORT
• Check MAP sensor supply voltage between sensor
connector E-033, terminal 3 and ground in the sen-
sor electrical connector.
• Approximately 5 V should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace circuit for an open or
short to ground in harness or connectors.
If circuit is normal, go to the next step.
5.CHECK THE MAP SENSOR GROUND CIRCUIT FOR AN OPEN OR SHORT
• Turn ignition switch off.
• Disconnect ECM sensor harness connector E-001.
• Check for harness continuity between MAP sensor terminal 1 and ECM terminal 17.
• Continuity should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace the circuit for an open or high resistance or short to power in harness or connec-
tors.
6.CHECK THE MAP SENSOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
• Check for harness continuity between MAP sensor terminal 4 and ECM connector E-001, terminal 37.
• Continuity should exist.
• Check harness short to ground or short to power.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace the circuit for open or short to ground or short to power in harness or connectors.
DIAGNOSIS & TESTING
VISMD030010
LTSMD030057
03–76Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 4.1.6L ENGINE - CHECK MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR ELECTRICAL CONNECTOR
• Disconnect the MAP sensor (1) (For 1.6L engine:
IAT sensor is built-into MAP sensor) electrical con-
nector.
• 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.
5.1.6L ENGINE - CHECK THE INTAKE AIR TEMPERATURE (IAT) SENSOR SIGNAL CIRCUIT VOLTAGE
• Check supply voltage between IAT sensor terminal
2 and ground in the IAT sensor electrical connector
E-033.
• 5 V should exist.
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.
6.DETECT MALFUNCTIONING PART
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check harness for a short to ground between IAT connector terminal 1 and ECM connector E-001, terminal 42.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair circuit for a short to ground in harness or connectors.
DIAGNOSIS & TESTING
VISMD030201
LTSMD030056
03–82Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 4.1.6L ENGINE - CHECK MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR ELECTRICAL CONNECTOR
• Disconnect the MAP sensor (1) (For 1.6L engine:
IAT sensor is built-into MAP sensor) electrical con-
nector.
• 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.
5.1.6L ENGINE - CHECK THE INTAKE AIR TEMPERATURE (IAT) SENSOR SIGNAL CIRCUIT
• Check supply voltage between IAT sensor terminal
2 and ground in the IAT sensor electrical connector
E-033.
• 5 V should exist.
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
VISMD030201
LTSMD030056
03–88Chery 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 (AVERAGE DC
VOLTAGE)
6 Injector 2
•Idle
• Engine is running
• Warm-up condition
• Accelerate suddenly Voltage: 11 - 14 V
7
Injector 3
27 Injector 1
47 Injector 4
ECM TERMINAL NO. ITEMCONDITIONDATA (AVERAGE DC
VOLTAGE)
17 Sensor (GND)•
Engine is running
• Warm-up condition:
78°C
• Idle: 795 RPM
• IAT: 36°C
• IAT signal voltage: 1.88
V 0V
33 Regulated sensor supply 1 5 V
37 Air flow sensor (1.8L)
Approximately 322 kg/h
Approximately 1.39 V
73 Regulated sensor supply 1 5 V
ECM TERMINAL NO.ITEMCONDITIONDATA (AVERAGE DC
VOLTAGE)
37 Manifold Absolute
Pressure (MAP) sensor (1.6L) •
Engine running: Idle
• Press accelerator pedal
slowly Approximately 1.3 V
• Engine running: 2000
RPM Approximately 1.5 V
• Press accelerator pedal
quickly Up to Approximately 4 V
(instantaneous)
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION POSSIBLE CAUSE
P0171 Fuel trim system too
lean Engine is running The amount of
mixture ratio
compensation is too large (The mixtureratio is too lean). •
Intake air leaks
• Air flow sensor
• Fuel injector
• Exhaust gas leaks
• Incorrect fuel
pressure
• lack of fuel
• Incorrect PCV
hose connection
• Upstream O
2sensor
•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.
DIAGNOSIS & TESTING
03–122Chery 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 (AVERAGE DC
VOLTAGE)
6 Injector 2
•Engine is running
• Warm-up condition
• Idle
• Accelerate suddenly Voltage: 11 - 14 V
7
Injector 3
27 Injector 1
47 Injector 4
ECM TERMINAL NO. ITEMCONDITIONDATA (AVERAGE DC
VOLTAGE)
17 Sensor (GND)
•Engine is running
• Warm-up condition:
78°C
• Idle: 795 RPM
• IAT: 36°C
• IAT signal: 1.88 V 0V
33 Regulated sensor supply 1 5 V
37 Air flow sensor (1.8L) 322 kg/h
1.39 V
73 Regulated sensor supply 1 5 V
ECM TERMINAL NO.ITEMCONDITIONDATA (AVERAGE DC
VOLTAGE)
37 Manifold Absolute
Pressure (MAP) sensor (1.6L) •
Engine running: Idle
• Press accelerator pedal
slowly Approximately 1.3 V
• Engine running: 2000
RPM Approximately 1.5 V
• Press accelerator pedal
quickly Up to approximately 4 V
(instantaneous)
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION POSSIBLE CAUSE
P0172 Fuel trim system too
rich Engine is running The amount of
mixture ratio
compensation is too
large (The mixture
ratio is too rich) •
Air flow sensor
• Manifold Absolute
Pressure (MAP)
sensor
• Fuel injector
• Exhaust gas leaks
• Incorrect fuel
pressure
• Upstream O
2sensor
•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.
DIAGNOSIS & TESTING
03
03–135Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Operation
The accelerator sensor monitors the road conditions. It sends a signal to the ECM, the ECM determines if a possible
misfire condition exists.
Removal & Installation
1. Disconnect the negative battery cable.
2. Disconnect the accelerator sensor electrical con-nector.
3. Remove the accelerator sensor (1).
4. Installation is in the reverse order of removal.
Manifold Absolute Pressure Sensor - 1.6L
Description
The Manifold Absolute Pressure (MAP) sensor, is mounted to the front of the engine on the intake manifold.
Operation
The MAP sensor monitors the pressure in the intake manifold. The pressure in the manifold moves a diaphragm
connected to resistors which alter their resistance values. The output voltage of the MAP sensor signals the ECM
about the pressure in the intake manifold.
Removal & Installation
1. Disconnect the negative battery cable.
ON-VEHICLE SERVICE
LTSM030030
03–222Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine DTCDTC DEFINITION
P2123 Throttle/Pedal Position Sensor/Switch D Circuit High Input
P2127 Throttle/Pedal Position Sensor/Switch E Circuit Low Input
P2128 Throttle/Pedal Position Sensor/Switch E Circuit High Input
P2138 Accelerator Pedal Position Sensor Signal Correlation Error
P2177 System Too Lean off Idle
P2178 System Too Rich off Idle
P2187 System Too Lean at Idle
P2188 System Too Rich at Idle
P2195 O
2Sensor Signal Stuck Lean; Bank 1 Sensor 1
P2196 O
2Sensor Signal Stuck Rich; Bank 1 Sensor 1
P2270 O
2Sensor Signal Stuck Lean; Bank 1 Sensor 2
P2271 O
2Sensor Signal Stuck Rich; Bank 1 Sensor 2
U0001 High Speed CAN Defective
U0101 Lost Communication with ECM
U0104 Lost Communication with Cruise Control Module
U0121 Lost Communication with Anti-Lock Brake System (ABS) Control Module
U0155 Lost Communication with Instrument Panel Cluster Control Module
U0415 Invalid Data Received from ABS Control Module
DIAGNOSIS & TESTING
03
03–253Chery Automobile Co., Ltd.