sensor CHERY TIGGO 2009 Service Repair Manual

Downloaded from www.Manualslib.com manuals search engine 6.CHECK INJECTOR POWER SUPPLY CIRCUIT FOR OPEN
• Turn ignition switch on.
• Check injector supply voltage between sensor ter-
minal and ground in the electrical connector.
• Battery voltage should exist.
Is the check result normal?
Ye s>>Go to step 8.
No
>>Go to the next step.
7.DETECT MALFUNCTIONING PART
• Check the following:
Front fuse and relay box F3, A13, G5
Fuse 12, fuse 24, fuse 27
Without EOBD (1.6L)
Front fuse and relay box F3, G2, G5
Fuse 12, fuse 23, fuse 24
harness between injector and fuse
Is the check result normal?
Ye s>>With the X-431, check the system, If OK, go to the next step.
No
>>Repair or replace malfunctioning parts.
8.CHECK INJECTOR CONTROL CIRCUITS FOR AN OPEN
• Check injector control circuit voltage.
• 3.6 V should exist.
Is the check result normal?
Ye s>>Go to step 10.
No
>>Go to the next step.
DIAGNOSIS & TESTING
LTSMD030024
03–146Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 9.DETECT MALFUNCTIONING PART
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check harness continuity between following terminals.
INJECTOR NO. ECM
TERMINAL INJECTOR
TERMINAL
12 72
262
372
44 72
• Continuity should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair circuit for an open in harness or connectors.
10.CHECK INJECTOR RESISTANCE
• Check fuel injector resistance between the following terminals.
INJECTOR
NO. INJECTOR
TERMINAL RESISTANCE
(APPROXIMATELY) (20°C)
11&2
12
21&2
31&2
41&2
• Check sensor signal output.
• Connect ECM connector.
• Connect injector connector.
• Check fuel injector voltage between the following terminals and ground.
TERMINAL NO. ITEMCONDITIONDATA (AVERAGE DC
VOLTAGE)
6
Injector•
Engine is running
• Warm-up condition
• Idle
• Accelerate suddenly Voltage: 11 - 14 V
7
27
47
DIAGNOSIS & TESTING
03
03–147Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine P0221 - Throttle Position Sensor B Performance
DIAGNOSIS & TESTING
LTSMW030044T
03
03–149Chery 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 (DC
VOLTAGE)
32 Regulated sensor
supply 2
Ignition switch: ON -
Approximately 5 V
38 Electronic throttle
control actuator
(Position sensor) •
Engine stopped
• Accelerator pedal:
Fully released 4.24 V
• Engine stopped
• Accelerator pedal:
Fully depressed 0.72 V
54 Electronic throttle
control actuator •
Engine stopped
• Accelerator pedal:
Fully released 0.74 V
• Engine stopped
• Accelerator pedal:
Fully depressed 4.62 V
78 Sensor (GND)
-Approximately 0 V
64 Motor 4
0 V or 12 V
65 Motor 3
66 Motor 2
12Vor0V
67 Motor 1
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION
POSSIBLE CAUSE
P0221 Throttle Position
Sensor (TPS) B performance Ignition switch on or
after engine start Rationally incorrect
voltage is sent to
ECM compared with
the signals from
TPS1 and TPS2. •
Electronic throttle
control actuator
(TPS1 and TPS2)
• Harness or
connectors (The
sensor signal circuit
is open or shorted)
• Accelerator pedal
position sensor 2
• 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.
• 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
03–151Chery 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).
Are the ground connections OK?
Ye s>>Go to the next step.
No
>>Repair or replace ground connections.
2.CHECK THROTTLE POSITION SENSOR (TPS) ELECTRICAL CONNECTOR
• Disconnect the TPS (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
VISMD030203
03–152Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 3.CHECK THE THROTTLE POSITION SENSOR (TPS) POWER SUPPLY CIRCUIT
• Turn ignition switch on.
• Check TPS supply voltage between TPS terminal 3
and ground in the TPS electrical connector E-027.
• Approximately 5 V should exist.
Is the check result normal?
Ye s>>Go to step 8.
No
>>Go to the next step.
4.CHECK THE TPS POWER SUPPLY CIRCUIT
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check harness continuity between TPS terminal 3 and ECM terminal 32.
• Continuity should exist.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace circuit for an open.
If the circuit is normal, go to the next step.
5.CHECK THE TPS AND THE ACCELERATOR PEDAL POSITION (APP) SENSOR POWER SUPPLY CIRCUIT
• Check harness for short to power and short to ground between following terminals.
ECM TERMINAL TPS/APS TERMINAL
32 TPS terminal 3
32 APP sensor terminal 3
33 APP sensor terminal 6
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair circuit for short to ground or short to power in harness or connectors.
DIAGNOSIS & TESTING
LTSMD030035
03
03–153Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 6.CHECK THE APP SENSOR
• Connect all harness connectors disconnected.
• Turn ignition switch on.
• Check voltage between ECM terminals 16 (APP sensor 1 signal), 40 (APP sensor 2 signal) and ground under
the following conditions:
ECM
TERMINAL NO. APP
SENSOR
TERMINAL ITEM
CONDITION VOLT (DC
VOLTAGE)
16 APP
sensor
terminal 4 Accelerator
Pedal
Position
Sensor 1 (APPS1)
Turn
ignition
switch on •
Engine
stopped
•
Accelerator
pedal:
Fully
released 0.72 -
0.74 V
• Engine
stopped
•
Accelerator
pedal:
Fully
depressed 3.95 V
40 APP
sensor
terminal 1 Accelerator
Pedal
Position
Sensor 2 (APPS2) •
Engine
stopped
•
Accelerator
pedal:
Fully
released 0.36 -
0.37 V
• Engine
stopped
•
Accelerator
pedal:
Fully
depressed 1.97 V
Is the check result normal?
Ye s>>Go to step 10.
No
>>Replace the Accelerator Pedal Assembly (See Accelerator Pedal Position Sensor Removal & Installation
in Section 03 Electronic Engine Controls).
7.CHECK THE TPS SIGNAL CIRCUIT FOR AN OPEN AND SHORT
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check harness continuity between electronic throttle control actuator terminal 5 and ECM terminal 38.
• Continuity should exist.
• Also check harness for a short to power and short to ground.
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair circuit for an open or short to power or short to ground in harness or connectors.
DIAGNOSIS & TESTING
03–154Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 8.CHECK THE TPS SENSOR GROUND CIRCUIT FOR AN OPEN AND SHORT
• Check harness continuity between electronic throttle control actuator terminal 2 and ECM terminal 78.
• Continuity should exist.
• 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.
9.CHECK TPS
• Connect all harness connectors disconnected.
• Turn ignition switch on.
• Check voltage between TPS terminals 6 (TPS1) and ground, terminal 5 (TPS2) and ground under the following
conditions:
TPS
TERMINAL NO. ITEM
CONDITION VOLTAGE
(DC
VOLTAGE)
5 Throttle
Position
Sensor 2 (TPS2)
Ignition
switch: ON •
Engine
stopped
•
Accelerator
pedal:
Fully
released 4.24 V
• Engine
stopped
•
Accelerator
pedal:
Fully
depressed 0.72 V
6 Throttle
Position
Sensor 1 (TPS1) •
Engine
stopped
•
Accelerator
pedal:
Fully
released 0.74 V
• Engine
stopped
•
Accelerator
pedal:
Fully
depressed 4.62 V
Is the check result normal?
Ye s>>Go to the next step.
No
>>Replace electronic throttle control actuator, and perform throttle valve position learning.
DIAGNOSIS & TESTING
03
03–155Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 6.CHECK INJECTOR POWER SUPPLY CIRCUIT FOR SHORT TO GROUND
• Turn ignition switch on.
• Check injector supply voltage between sensor ter-
minal and ground in the electrical connector.
• Battery voltage should exist.
Is the check result normal?
Ye s>>Go to step 8.
No
>>Go to the next step.
7.DETECT MALFUNCTIONING PART
• Check the following:
Front fuse and relay box F3, A13, G5
Fuse 12, fuse 24, fuse 27
Without EOBD (1.6L). Front fuse and relay box F3, G2, G5
Fuse 12, Fuse 23, Fuse 24
harness between injector and fuse
Is the check result normal?
Ye s>>With the X-431, check the system, If OK, go to the next step.
No
>>Repair malfunctioning parts.
8.CHECK INJECTOR CONTROL CIRCUITS FOR A SHORT
• Check injector control circuit voltage.
• 3.6 V should exist.
Is the check result normal?
Ye s>>Go to step 10.
No
>>Go to the next step.
DIAGNOSIS & TESTING
LTSMD030024
03
03–161Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 9.DETECT MALFUNCTIONING PART
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check harness continuity between following terminals.
• Continuity should not exist.
INJECTOR NO. INJECTOR
TERMINAL GROUND
12
Ground
22
32
42
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace the circuit for a short in harness or connectors.
10.CHECK INJECTOR RESISTANCE
• Check the fuel injector resistance as shown in the following:
INJECTOR
NO. INJECTOR
TERMINAL RESISTANCE
(APPROXIMATELY) (20°C)
11&2
12
21&2
31&2
41&2
• Check sensor signal output.
• Connect ECM connector.
• Connect injector connectors.
• Check the fuel injector voltage as shown in the following:
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
DIAGNOSIS & TESTING
03–162Chery Automobile Co., Ltd.