Chery Tiggo. Manual — part 109
P0221 - Throttle Position Sensor B Performance
DIAGNOSIS & TESTING
LTSMW030044T
03
DIAGNOSIS & TESTING
LTSMW030045T
Check reference values between ECM terminals and ground under the following conditions:
ECM TERMINAL
NO.
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
12 V or 0 V
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
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?
Yes
>>
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?
Yes
>>
Go to the next step.
No
>>
Repair or replace the electrical connector
as necessary.
DIAGNOSIS & TESTING
VISMD030203
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