Chery Tiggo. Manual — part 98
6.
CHECK THE TPS RESISTANCE
• Check resistance between TPS terminal 2 and terminal 3.
• 2 k⍀ ± 20 % (20°C) should exist.
• Also check the resistance between TPS terminal 6 and terminal 2 while turn the throttle.
• The resistance should linear change.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Replace the TPS.
Perform the TPS self-learning.
7.
CHECK THE TPS SIGNAL
• Turn ignition switch off.
• Connect ECM connector.
• Connect TPS connector.
• Turn ignition switch on.
• Check voltage between TPS terminal 3 and ground under the following conditions:
ECM TERMINAL
NO.
ITEM
CONDITION
DATA (DC
VOLTAGE)
32
Regulated sensor
supply
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
12 V or 0 V
65
Motor 3
66
Motor 2
12 V or 0 V
67
Motor 1
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Replace the TPS.
Perform the TPS self-learning.
DIAGNOSIS & TESTING
03
8.
CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• Refer to ⬙DTC Confirmation Procedure⬙.
Is DTC P0122 still present?
Yes
>>
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
P0123 - Throttle Position Sensor A Circuit High Input
DIAGNOSIS & TESTING
LTSMW030044T
03
Check reference values between ECM terminals and ground under the following conditions:
ECM TERMINAL
NO.
ITEM
CONDITION
DATA (DC
VOLTAGE)
32
Regulated sensor
supply
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
12 V or 0 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
P0123
TPS A circuit high
input
• Ignition switch:
ON
• Engine: Running
Signal output is
above maximum
acceptable range for
a few seconds
continuously.
• Throttle Position
Sensor (TPS) or
misalignment
• Harness or
connectors (The
sensor signal 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.
• 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 and data stream.
• If the DTC is detected, the DTC condition is current. Go to Diagnostic Procedure - Step 1.
• If the DTC is not detected, the DTC condition is intermittent (See Diagnostic Help and Intermittent DTC Trou-
bleshooting in Section 03 Electronic Engine Controls for more information.
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
DIAGNOSIS & TESTING
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