Chery Tiggo. Manual — part 282
32 - Low Speed Solenoid Malfunction
DIAGNOSIS & TESTING
LTSMW080005T
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO.
DTC DEFINITION
DTC DETECTION
CONDITION
DTC SET
CONDITION
POSSIBLE CAUSES
32
Low speed solenoid
malfunction
Vehicle is driving
• The Transaxle
Control Module
(TCM) will set this
DTC when the TCM
detected an
improper voltage
drop when it tries to
operate the solenoid
valve.
• If the DTC was
set, then the A/T will
be locked in 3rd
gear (D gear).
• Solenoid
• 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.
• Connect the X-431 scan tool to the Data Link Connector (DLC) - use the most current software available.
• After connection, press POWER key to start X-431.
• 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.
• 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
Diagnostic Procedure
1.
CHECK A/T SOLENOID VALVE SIGNAL
• With the scan tool, select view DTC and data stream for A/T.
• Start the engine.
• Monitor the value of the gear position as indicated in the following table while driving:
GEAR
POSITION
ELECTRO-MAGNETIC VALVE
L/R
GEAR
2
UD
OD
DCC
(REF)
Gear 1
Off
On
Off
On
Off
Gear 2
On
Off
Off
On
On
Gear 3
On
Off
Off
Off
On
Gear 4
On
Off
On
Off
On
Reverse
gear
Off
On
On
On
Off
Neutral
gear/
Parking
Off
On
On
On
Off
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.
ACTUATE TEST
• With X-431, perform the solenoid actuate test.
• The solenoid should be heard.
Is the check result normal?
Yes
>>
Go to step 7.
No
>>
Go to the next step.
DIAGNOSIS & TESTING
3.
CHECK LOW SPEED ELECTRO-MAGNETIC VALVE
• Stop vehicle and turn ignition switch off.
• Disconnect A/T assembly connector.
NUMBER
SOLENOID
WIRE COLOR
1
Low Speed
Electro-Magnetic
Valve (UD)
White / Red
2
2nd Gear
Electro-Magnetic
Valve (2nd)
Yellow / Red
3
Damp clutch
system control
Electro-Magnetic
Valve (DCC)
Brown / Yellow
4
Overdrive
Electro-Magnetic
Valve (OD)
Blue / Yellow
5
Low/reverse
Gear Electro-
Magnetic Valve
(L/R)
Black / Red
• Check UD solenoid resistance as shown in the following table:
A/T
ASSEMBLY
TERMINAL
LOW/
REVERSE
GEAR
ELECTRO-
MAGNETIC
VALVE
(L/R)
OVERDRIVE
ELECTRO-
MAGNETIC
VALVE
(OD)
2ND GEAR
ELECTRO-
MAGNETIC
VALVE
(2ND)
LOW
SPEED
ELECTRO-
MAGNETIC
VALVE
(UD)
7 - 10
6 - 10
4 - 9
3 - 9
Resistance
(23°C)
7.3 - 0.69
⍀
Is the check result normal?
Yes
>>
Replace the low speed Electro-Magnetic Valve with a known good one.
With X-431, perform the solenoid actuate test.
− If the solenoid can be heard, the system is normal.
− If the solenoid can’t be heard, go to the next step.
No
>>
Replace the damaged low speed Electro-Magnetic Valve.
DIAGNOSIS & TESTING
08
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