Chery Tiggo. Manual — part 278
3.
DETECT MALFUNCTIONING PART
• Check the following:
− Harness connectors A-102, E-105
− Body fuse and relay box H13
− Fuse 3 (10A)
− Harness open or short between input shaft speed sensor and fuse
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair or replace the open circuit or short to ground or short to power in harness or connectors.
4.
CHECK INPUT SHAFT SPEED SENSOR SIGNAL CIRCUIT
• Check sensor signal circuit between sensor terminal 2 and ground in the sensor electrical connector E-088.
• 5 V should exist.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair or replace open circuit or short to
power or short to ground.
5.
CHECK INPUT SHAFT SPEED SENSOR GROUND CIRCUIT
• Turn the ignition switch off.
• Disconnect TCM connector.
• Check for harness continuity between the following terminals:
INPUT SPEED
SENSOR
CONNECTOR
TERMINAL
TCM
CONNECTOR
TERMINAL
CONTINUITY
1
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 open circuit or short to power or short to ground.
DIAGNOSIS & TESTING
LTSMD080061
6.
CHECK INPUT SHAFT SPEED SENSOR SIGNAL
• Connect the TCM and sensor electrical connector.
• Start the vehicle and perform the following:
− Engine: 2000 RPM
− Vehicle: 50 km/h
− Gear: 3
• Check sensor signal between sensor terminal 2 and ground in the sensor electrical connector E-088 with the
X-431 or oscilloscope.
• Make sure the wave shape is normal and signal voltage is fluctuating from 0 - 5 V.
Is the check result normal?
Yes
>>
Go to step 9.
No
>>
Go to the next step.
7.
CHECK INPUT SHAFT SPEED SENSOR
• Perform the following:
− Loosen the bolt of the sensor.
− Remove the sensor.
− Visually inspect the sensor for missing or chipped teeth.
Is the check result normal?
Yes
>>
Replace the input speed sensor.
Monitor the input speed sensor signal on the X-431 or oscilloscope.
− If the input speed sensor signals were normal, the system is OK.
− If the input speed sensor signals were still irregular or missing, go to step 8.
No
>>
Replace input speed sensor.
8.
CHECK THE RETAINER OF DECELERATION CLUTCH
• Disassemble and inspect the A/T and replace the retainer for the deceleration clutch.
• Check for a chipped and damaged signal retainer for the deceleration clutch.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Replace the retainer for the deceleration clutch.
Monitor the input speed sensor signal on the X-431 or oscilloscope.
If the signal pulse is not normal, repair the noise interference.
9.
CHECK DTC
• With the X-431 scan tool, read TCM DTCs.
• Refer to ⬙DTC Confirmation Procedure⬙.
Is the check result normal?
Yes
>>
The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
No
>>
Replace the TCM.
DIAGNOSIS & TESTING
08
23 - Output Speed Sensor Fault
DIAGNOSIS & TESTING
LTSMW080007T
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO.
DTC DEFINITION
DTC DETECTION
CONDITION
DTC SET
CONDITION
POSSIBLE CAUSE
23
Output speed
sensor
Vehicle is driving
• The Transaxle
Control Module
(TCM) will set this
DTC when the TCM
didn’t received pulse
signal from the
output 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.
• Output shaft speed
sensor
• Harness or
connectors (The
sensor circuit is open
or shorted)
• Transfer case
driven and drive gear
• 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 engine and warm it to normal operating temperature, then select ⬙D⬙ position.
• Drive the vehicle up to 30 km/h or more at 3 or 4 gear.
• Driving the vehicle uphill will help maintain the driving conditions required for this test.
• 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
08
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