Chery Tiggo. Manual — part 242
Diagnostic Trouble Code (DTC) Tests
P0641 - Sensor Feed
DIAGNOSIS & TESTING
LTSMW080015T
A/T Fluid Temperature Sensor
DIAGNOSIS & TESTING
LTSMW080018T
08
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO.
DTC DEFINITION
DTC DETECTION
CONDITION
DTC SET
CONDITION
POSSIBLE CAUSES
P0641
Sensor feed
Engine is running
The Transaxle
Control Module
(TCM) detects that
the voltage is out of
the acceptable
range.
• TFT sensor
• A/T fluid pressure
sensor
• Harness or
connectors (The
sensor circuit is open
or shorted)
• Transaxle Control
Module (TCM)
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, view and erase stored DTCs in the TCM.
• Start the engine and warm it to normal operating temperature.
• With the scan tool, 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 08 Transaxle & Transfer Case for more information).
NOTE :
• If DTCs P0840 and P0710 are present, diagnose and repair them before continuing with this test.
• Using the appropriate diagnostic test tool, you can diagnose the TCM harness while the TCM is still connected.
This will help prevent electrical connector terminal damage.
NOTE :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
Diagnostic Procedure
1.
CHECK TRANSAXLE FLUID PRESSURE AND TEMPERATURE SENSOR ELECTRICAL CONNECTOR
• Turn the ignition switch off.
• Disconnect the A/T assembly electrical connector
E-037 (1).
• 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
LTSMD080023
2.
CHECK TRANSAXLE FLUID PRESSURE AND TEMPERATURE (TFT) SENSOR POWER SUPPLY
• Turn the ignition switch on.
• Check the A/T fluid pressure sensor voltage supply
circuit for 5 V between connector E-037, terminal
C1 and ground.
• Check the Transaxle Fluid Temperature (TFT) sen-
sor voltage supply circuit for 5 V between connec-
tor E-037, terminal B1 and ground.
Is 5 V present at each terminal?
Yes
>>
• Go to the next step.
No
>>
• Repair or replace open circuit or short
to ground or short to power in harness
or connectors.
3.
CHECK A/T FLUID PRESSURE SENSOR AND TFT SENSOR GROUND CIRCUIT
• Disconnect the Transaxle Control Module (TCM) electrical connector E-036 (1).
• Check the A/T fluid pressure sensor ground circuit
between the A/T connector E-037, terminal C3 and
TCM connector E-036 terminal 25 for an open,
short to ground or short to voltage.
• Check the A/T TFT sensor ground circuit between
the A/T connector E-037, terminal B4 and TCM
connector E-036 terminal 53 for an open, short to
ground or short to voltage.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair the circuit for an open or short to
ground or short to voltage in the harness or
connectors.
DIAGNOSIS & TESTING
LTSMD080024
LTSMD080074
08
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