Chery Tiggo. Manual — part 295
MEASURE STATUS
STANDARD FLUID PRESSURE KPA (PSI)
GEAR LEVER
POSITION
GEAR
POSITION
ENGINE
SPEED
(RPM)
DECELERATION
CLUTCH
PRESSURE
REVERSE
GEAR
CLUTCH
PRESSURE
OVERDRIVE
CLUTCH
PRESSURE
LOW/
REVERSE
GEAR
CLUTCH
PRESSURE
SECONDARY
BRAKE
PRESSURE
TORQUE
CONVERTER
PRESSURE
P
-
2,500
-
-
-
310 - 390
(45-56)
-
250 - 390 (36
- 56)
R
Reverse Gear
2,500
-
1,270 - 1,770
-
1,270 - 1,770
-
500 - 700 (73
- 101)
N
Neutral Gear
2,500
-
-
-
310 - 390 (45
- 56)
-
250 - 390 (36
- 56)
D
Gear 1
2,500
1,010 - 1,050
(146 - 152)
-
-
1,010 - 1,050
(146 - 152)
-
500 - 700 (73
- 101)
Gear 2
2,500
-
-
-
-
1,010 - 1,050
(146 - 152)
500 - 700 (73
- 101)
Gear 3
2,500
590 - 690 (85 -
100)
-
590 - 690
(85 - 100)
-
-
450 - 650 (65
- 94)
Gear 4
2,500
-
-
590 - 690
(85 - 100)
-
590 - 690 (85
- 100)
450 - 650 (65
- 94)
• In accordance with the shown status of standard fluid pressure measurement table, measure the fluid pressure
of each measurement port. The measurement of each port should be within the standard range.
• If some measurement values is beyond the standard range, please refer to the fluid pressure measurement and
diagnosis table for causes.
Is the check result normal?
Yes
>>
Go to step 5 for disc or plate abrasion.
No
>>
Go to the next step.
3.
CHECK VALVE BODY ASSEMBLY AND FLUID PUMP AND PIPELINE
• Turn the ignition switch off.
• Disassemble and repair F4A4 automatic transaxle assembly (See Automatic Transaxle Removal & Installation in
Section 08 Transaxle & Transfer Case).
• Check valve body and fluid pump and pipeline.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Replace damaged components and low speed clutch and reverse gear clutch for low pressure burned.
4.
COMPRESSED AIR TEST
• Check low speed clutch system: Low speed clutch piston should be active and maintain pressure when com-
pressed air is applied to the fluid hole.
• Check reverse gear clutch system: Reverse gear clutch piston should be active and maintain pressure when
compressed air is applied to the fluid hole.
Is the check result normal?
Yes
>>
Go to the next step for disc or plate abrasion.
No
>>
Replace damaged components and low speed clutch and reverse gear clutch for low pressure burned.
DIAGNOSIS & TESTING
5.
CHECK LOW SPEED CLUTCH SYSTEM
• Stop vehicle and turn ignition switch off.
• Disassemble and repair F4A4 automatic transaxle assembly (See Automatic Transaxle Removal & Installation in
Section 08 Transaxle & Transfer Case).
• Check low speed clutch system:
− Check low speed clutch plate
− Check low speed clutch disc
− Snap ring
− Clutch reaction disc
− D-Ring
− Spring retainer
− Low speed clutch drum
− Low speed clutch piston
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Replace the damaged components.
6.
CHECK REVERSE GEAR CLUTCH SYSTEM
• Check reverse gear clutch system:
− Reverse gear clutch plate
− Reverse gear clutch disc
− Central support
− Snap ring
− Clutch reaction disc
− Spring retainer
− Reverse gear clutch piston
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Replace the damaged components.
7.
CHECK DTC
• Assemble all disassembled components.
• Install the transaxle assembly (See Automatic Transaxle Removal & Installation in Section 08 Transaxle &
Transfer Case).
• Fill the transaxle with new ATF:
− Fill the ATF from the fill tube.
− Reinstall the hose connector disassembled in step 1 and reinstall the dipstick (clean the dipstick before
installing).
− Shift the gear selector lever to each gear position and then shift to gear “N”.
− Drive the vehicle until the ATF reaches operating temperature (70° - 80°C) and re-check the fluid level. The
fluid level must be within the HOT range of dipstick.
− Reinstall the dipstick into the transaxle.
• With the X-431 scan tool, read TCM DTCs.
• Refer to ⬙DTC Confirmation Procedure⬙.
Is DTC 46 present?
Yes
>>
Replace the TCM.
No
>>
The system is now operating properly.
DIAGNOSIS & TESTING
08
54 - Electrical Relay Open Circuit
DIAGNOSIS & TESTING
LTSMW080003T
On Board Diagnostic Logic
• Self-diagnosis detection logic.
DTC NO.
DTC DEFINITION
DTC DETECTION
CONDITION
DTC SET
CONDITION
POSSIBLE CAUSES
54
Electrical relay open
circuit
Ignition switch on
• The Transaxle
Control Module
(TCM) will set this
DTC when the TCM
detected that the
A/T control voltage
is below 7 V.
• If the DTC was
set, then the A/T will
be locked in 3rd
gear (D gear) or
shifted to low gear
when in sports
mode.
• A/T control relay
• 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 the ignition switch on.
• With the scan tool, view and erase stored DTCs in the TCM.
• Start 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 :
While performing electrical diagnosis & testing, always refer to the electrical schematics for specific circuit
and component information.
Diagnostic Procedure
1.
CHECK GROUND CONNECTION
• Turn ignition switch off.
• Loosen and retighten ground screws on the body (See Ground Inspection in Section 12 Brakes).
• Inspect the ground connection C-201 mounting position (See Vehicle Wiring Harness Layout - Main Harness in
Section 16 Wiring).
Are the ground connections OK?
Yes
>>
Go to the next step.
No
>>
Repair or replace the ground connections.
DIAGNOSIS & TESTING
08
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