Chery Tiggo 5 (T21). Manual - part 218

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61

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

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-

+

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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62

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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63

18

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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64

18

DTC

P0842

Transmission Fluid Pressure Sensor 'A' Circuit Low

DTC

P0843

Transmission Fluid Pressure Sensor 'A' Circuit High

ET21180120

TCU

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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