Chery Tiggo. Manual — part 277
2.
CHECK TFT SENSOR HARNESS
• Disconnect TCM connector.
• Check for continuity between the following A/T assembly terminals and TCM terminals:
A/T ASSEMBLY
CONNECTOR
TERMINAL
TCM
CONNECTOR
TERMINAL
CONTINUITY
1
40
Yes
2
39
Yes
• Check the harness for short to power and short to ground.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair or replace the open circuit or short to power or short to ground.
3.
CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
• Check TCM power supply and ground circuit.
• Reinstall any removed parts.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair or replace damaged parts.
4.
CHECK DTC
• With the X-431 scan tool, read TCM DTCs.
• Refer to ⬙DTC Confirmation Procedure⬙.
Is DTC 15 still present?
Yes
>>
Replace the TCM.
No
>>
The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
DIAGNOSIS & TESTING
22 - Input Speed Sensor
DIAGNOSIS & TESTING
LTSMW080006T
08
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO.
DTC DEFINITION
DTC DETECTION
CONDITION
DTC SET
CONDITION
POSSIBLE CAUSES
22
Input speed sensor
Vehicle is driving
• The Transaxle
Control Module
(TCM) will set this
DTC when the TCM
didn’t received pulse
signal from the input
shaft speed sensor
for above 1 seconds
when the vehicle is
driving for 30 km/h
at 3 or 4 gear.
• If the DTC was
set for 4 times, then
the A/T will be
locked in 3rd gear
(D gear) or shifted
to low gear when in
sports mode.
• Input shaft speed
sensor
• The retainer of
deceleration clutch
• Harness or
connectors (The
sensor circuit is open
or shorted)
• 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.
• Drive the vehicle up to 10 km/h or more.
• 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 :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
DIAGNOSIS & TESTING
Diagnostic Procedure
1.
CHECK A/T INPUT SIGNAL
• With the scan tool, select view DTC and data stream for A/T.
• Vehicle start and read out the value of ⬙INPUT SPEED SENSOR⬙.
ITEM
CONDITION
DISPLAY
VALUE
Input speed
sensor
During driving
(lock-up ON)
Approximately
matches the
engine speed.
Is the check result normal?
Yes
>>
The condition that caused this DTC is intermittent (See Diagnostic Help in Section 08 Transaxle &
Transfer Case).
No
>>
Go to the next step.
2.
CHECK INPUT SHAFT SPEED SENSOR POWER SUPPLY
• Stop the vehicle and turn ignition switch off.
• Disconnect input shaft speed sensor electrical connector.
• Turn the ignition switch on.
• Check sensor power supply between sensor termi-
nal 3 and ground in the sensor electrical connector
E-088.
• Voltage should be more than 12 V.
Is the check result normal?
Yes
>>
Go to step 4.
No
>>
Go to the next step.
DIAGNOSIS & TESTING
LTSMD080004
08
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст