2009 CHERY TIGGO sensor

Downloaded from www.Manualslib.com manuals search engine 6.DETECT MALFUNCTIONING PART
• Check the following:
Fuel pump and circuit
Fuel pressure regulator
Is the check result normal?
Ye s>>Go to the next step.
No
>>Repair or replace malfunctioning part.
7.CHECK MAF SENSOR
• Turn ignition switch off.
• Install all removed parts.
• Check air flow in data stream.
MAF SENSOR SIGNAL
TERMINAL NO. ITEMCONDITION DATA
37 Air flow sensor •
Engine is running
• ECT: 78°C
• Idle: 795 RPM
• IAT: 36°C
• IAT signal: 1.88 V 322 kg/h
1.39 V
Is the check result normal?
Ye s>>If with the X-431, go to the next step.
If without the X-431, go to step 9.
No
>>Check connectors for damaged or air flow signal circuit for short to power.
8.PERFORM ACTIVE TEST FUNCTION
• Start engine.
• Select ACTIVE TEST menu.
• Perform injector active test.
• Make sure that each test produces a momentary engine speed drop.
Is the check result normal?
Ye s>>Go to step 11.
No
>>Go to the next step.
9.CHECK FUNCTION OF INJECTOR
• Listen to each injector operating sound.
• Operating sound should exist.
Is the check result normal?
Ye s>>Go to step 11.
No
>>Go to the next step.
DIAGNOSIS & TESTING
03–342Chery Automobile Co., Ltd.

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:
Harness connectors A-102, E-105
Front fuse and relay box F3
Fuse 12, fuse 23, fuse 24
Check harness for an open or short to ground 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 part.
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
03–349Chery 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 resistance as table shown.
• Check the fuel injector resistance as shown in the following:
INJECTOR
NO. INJECTOR
TERMINAL RESISTANCE
(APPROXIMATELY) (20°C)
1 1&2
11-16
2 1&2
3 1&2
4
1&2
•
Also check sensor signal output.
• Connect ECM connector.
• Connect injector connector.
• Check the fuel injector voltage as shown in the following:
TERMINAL NO. ITEMCONDITIONDATA (AVERAGE DC
VOLTAGE)
6 Injector 2
•Engine is running
• Idle
• Warm-up condition
• Accelerate suddenly Voltage: 11 - 14 V
7
Injector 3
27 Injector 1
47 Injector 4
DIAGNOSIS & TESTING
03–350Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine P0221 - Throttle Position Sensor B Performance
DIAGNOSIS & TESTING
LTSMW030025T
03–352Chery 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
64 Motor 4
-12Vor0V
65 Motor 3
66 Motor 2
0 V or 12 V
67 Motor 1
78 Sensor (GND) Approximately 0 V
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO. DTC DEFINITION DTC DETECTION
CONDITION DTC SET
CONDITION POSSIBLE CAUSE
P0221 Throttle position
sensor B
performance •
Ignition switch:
ON
• Engine: Running 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
• 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
03–353Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 3.CHECK THE TPS POWER SUPPLY CIRCUIT
• Turn ignition switch on.
• Check supply voltage between TPS terminal 3 and
ground in the TPS electrical connector E-027.
• Approximately 5.0 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.
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 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
03–355Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 6.CHECK 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
DATA (DC
VOLTAGE)
16 APP
sensor
terminal 4 Accelerator
pedal
position
sensor 1
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 •
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 OR SHORT
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check harness continuity between TPS terminal 5 and ECM terminal 38.
• 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 circuit for an open or short to power or short to ground in harness or connectors.
DIAGNOSIS & TESTING
03–356Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 8.CHECK THE TPS GROUND CIRCUIT FOR AN OPEN OR SHORT
• Check harness continuity between electronic throttle control actuator terminal 2 and ECM terminal 78.
• 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.
9.CHECK TPS
• Connect all harness connectors disconnected.
• Turn ignition switch on.
• Check voltage between ECM terminals 54 (TPS1 signal), 38 (TPS2 signal) and ground under the following con-
ditions:
TPS
TERMINAL NO. ITEM
CONDITION DATA (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 the Electronic Throttle Control Actuator (See Electronic Throttle Control Actuator Removal &
Installation in Section 03 Electronic Engine Controls).
DIAGNOSIS & TESTING
03
03–357Chery Automobile Co., Ltd.