Chery Tiggo. Manual — part 150
3.
CHECK THE TPS POWER SUPPLY CIRCUIT
• Turn ignition switch on.
• Check throttle position sensor supply voltage
between sensor terminal 3 and ground in the sen-
sor electrical connector E-027.
• 5.0 V should exist.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair circuit for an open or short to
ground in harness or connectors.
If harness is normal, replace the ECM.
NOTE : The Immobilizer control module
must be matched to the new ECM (See ECM Removal & Installation in Section 03 Electronic
Engine Controls).
4.
CHECK TPS SIGNAL CIRCUIT FOR AN OPEN OR SHORT
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check harness continuity between following terminals.
TPS TERMINAL
ECM TERMINAL
6
54
5
38
• Continuity should exist.
• Check harness for a short to power.
Is the check result normal?
Yes
>>
Go to step 6.
No
>>
Go to the next step.
5.
DETECT MALFUNCTIONING PART
• Check harness for an open or a short to ground between TPS connector terminal 2 and ECM connector E-001,
terminal 78.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair or replace harness or connectors.
DIAGNOSIS & TESTING
LTSMD030035
03
6.
CHECK TPS RESISTANCE
• Check resistance between TPS terminal 2 and terminal 3.
• 2 k⍀ ± 20 % (20°C) should exist.
• Check the resistance between TPS terminal 6 and terminal 2 while moving the throttle.
• The resistance should be a linear change.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Replace TPS.
Perform TPS self-learning.
7.
CHECK THE TPS
• 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:
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 pressed
0.72 V
54
Electronic throttle
control actuator
(position sensor)
• Engine stopped
• Accelerator pedal:
Fully released
0.74 V
• Engine stopped
• Accelerator pedal:
Fully depressed
4.62 V
64
Motor 4
-
12 V or 0 V
65
Motor 3
66
Motor 2
12 V or 0 V
67
Motor 1
78
Sensor (GND)
Approximately 0 V
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Replace the TPS.
Perform the TPS self-learning.
DIAGNOSIS & TESTING
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
03
P0123 - Throttle Position Sensor A Circuit High Input
DIAGNOSIS & TESTING
LTSMW030025T
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