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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

2,500

310 - 390

(45-56)

250 - 390 (36

- 56)

Reverse Gear

2,500

1,270 - 1,770

500 - 700 (73

- 101)

Neutral Gear

2,500

310 - 390 (45

- 56)

250 - 390 (36

- 56)

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.

Go to the next step.

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.

Replace damaged components and low speed clutch and reverse gear clutch for low pressure burned.

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.

Replace damaged components and low speed clutch and reverse gear clutch for low pressure burned.

DIAGNOSIS & TESTING

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.

Replace the damaged components.

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.

Replace the damaged components.

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.

The system is now operating properly.

DIAGNOSIS & TESTING

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

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

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.

Repair or replace the ground connections.

DIAGNOSIS & TESTING

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