Chery Tiggo 5 (T21). Service manual — part 218

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18

a. Turn ignition switch to LOCK and disconnect the negative

battery cable.

b. Disconnect the wire harness connector E-030.
c. Check if the terminals 23, 27 and 51 of wire harness

connector E-030 are short to power.

a. Correctly install a new primary shaft speed sensor.
b. Using the X-431 3G diagnostic tester, check whether the system is normal.

a. Using X-431 3G diagnostic tester, select Read Code.
b. Check if DTC P0791 or P0792 still exists.

4

Check if TCU wire harness connector E-030 is short to power

RT21181000

E-030

29 30 31 32 33 34 35 36 37 38 39 40 41 42

1 2 3 4 5 6 7 8 9 10 11 12 13 14

43 44 45 46 47 48 49 50 51 52 53 54 55 56

15 16 17 18 19 20 21 22 23 24 25 26 27 28

-

+

V

Repair or replace failed circuit

NG

5

Check primary shaft speed sensor

OK

Diagnosis complete

NG

6

Check for DTC

OK

Replace TCU

NG

System is normal

OK

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18

DTC Confirmation Procedure:

Confirm that battery voltage is between 11 and 14 V before performing the following procedures.
 Turn ignition switch to LOCK.
 Connect X-431 3G diagnostic tester (the latest software) to Data Link Connector (DLC), and make it

communicate with vehicle electronic module by the data network.

 Turn ignition switch to ON.
 Using X-431 3G diagnostic tester to record and clear the DTCs stored in the TCU.
 Turn ignition switch to LOCK and wait for a few seconds.
 Turn ignition switch to ON, and then select "Read Code".
 If DTC is detected, the malfunction indicated by the DTC is current. Go to the diagnosis procedure - Step 1.
 If DTC is not detected, the malfunction indicated by the DTC is intermittent. Please refer to Intermittent

DTC Troubleshooting.

DTC

P0811

Drive Clutch 'A' Slippage

DTC

P081E

Reverse Clutch 'B' Slippage

DTC

P0894

Transmission Component Slipping

DTC Code

DTC Definition

DTC Detection

Condition

DTC Set

Condition

Possible Cause

P0811

Drive Clutch 'A'
Slippage

Start engine and keep
it at following status for
at least 30 seconds:
apply brake, at D gear

High slippage
speed of the
forward/ reverse
clutch input and
output speed

 Clutch control

valve core seized

 Clutch control

solenoid short
circuit to the power

 Clutch friction plate

serious wearing or
sinter

P811E

Reverse Clutch 'B'
Slippage

Start engine and keep
it at following status for
at least 30 seconds:
apply brake, at R gear

P0894

Transmission
Component Slipping

Start engine and make
the operation as
following: 20% - 50%
throttle opening, at D
gear, vehicle speed
higher than 30 km/h,
constant driving time
not less than 30
seconds

The torque
converter locking
clutch is
engaged for a
long time or high
slippage speed
exists after
engagement

 Solenoid circuit

open circuit or
short circuit

 TCU torque

converter locking
control solenoid
failure

 Hydraulic control

circuit fault

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Diagnosis Procedure

HINT:
After the fault is eliminated, verify DTC and symptom again.

a. Transmission sensor wire harnesses (check for looseness, dirt and other fault)
b. Transmission sensor (check for damage, dirt and other fault)
c. Are all checks OK?

a. Use diagnostic tester to check the transmission system.
b. Is there any DTC except for P0811, P081E, P0894?

a. Use the diagnostic tester to read the data flow related to engine and transmission system for abnormality.
b. Transmission system should be normal.
c. Is the check result normal?

a. Using X-431 3G diagnostic tester, select Read Code.
b. Refer to "DTC Confirmation Procedure".
c. Is DTC P0811, P081E or P0894 still present?

1

Carry out following preliminary checks

Repair fault

NG

2

Check transmission system

OK

Repair these DTCs fault

NG

3

Read data stream

OK

Diagnose abnormal data flow fault

NG

4

Check for DTC

OK

Replace solenoid and wire harness
assembly

NG

System is normal

OK

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DTC

P0842

Transmission Fluid Pressure Sensor 'A' Circuit Low

DTC

P0843

Transmission Fluid Pressure Sensor 'A' Circuit High

ET21180120

TCU

29 30 31 32 33 34 35 36 37 38 39 40 41 42

1 2 3 4 5 6 7 8 9 10 11 12 13 14

43 44 45 46 47 48 49 50 51 52 53 54 55 56

15 16 17 18 19 20 21 22 23 24 25 26 27 28

PRIMARY SHAFT
PRESSURE SENSOR

1

2

3

E-030

B

E-030

W

E-054

E-054

8

11

10

WR

L

G

1

2

3