Chery Tiggo 5 (T21). Manual — part 219

18–

65

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.

Diagnosis Procedure

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

a. Turn ignition switch to LOCK.
b. Disconnect the primary shaft pressure sensor connector.
c. Check if the primary shaft pressure sensor connector is dirty, oxidized, loose or damaged.

DTC Code

DTC Definition

DTC Detection

Condition

DTC Set

Condition

Possible Cause

P0842

Transmission Fluid
Pressure Sensor 'A'
Circuit Low

Start engine and wait
for at least 10 seconds

The transmission
fluid pressure
sensor 'A' oil
pressure is less
than the
allowable min
value

 Transmission fluid

pressure sensor 'A'
failure

 Signal circuit open

or short circuit

 TCU signal circuit

failure

P0843

Transmission Fluid
Pressure Sensor 'A'
Circuit High

The transmission
fluid pressure
sensor 'A' oil
pressure is more
than the
allowable max
value

1

Check wire harness connector

Repair fault

NG

OK

18–

66

18

a. Turn ignition switch to LOCK and disconnect the negative

battery cable.

b. Disconnect the wire harness connectors E-030 and E-

054.

c. Check for continuity between the terminals 8, 10 and 11

of wire harness connector E-030 and terminals 1, 3 and 2
of connector E-054.

a. Turn ignition switch to LOCK and disconnect the negative

battery cable.

b. Disconnect the wire harness connector E-030.
c. Check for continuity between the terminals 10, 11 and 8

of wire harness connector E-030 and ground.

2

Check TCU wire harness

-

+

RT21181010

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

E-054

1

2

3

Repair failed circuit

NG

3

Check if TCU wire harness E-030 and ground is conductive

OK

-

+

RT21181020

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

Repair or replace failed circuit

NG

OK

18–

67

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 10, 11 and 8 of wire harness

connector E-030 are short to power.

a. Correctly install a new primary shaft pressure 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 P0842 or P0843 still exists.

4

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

RT21181030

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 pressure sensor

OK

Diagnosis complete

NG

6

Check for DTC

OK

Replace TCU

NG

System is normal

OK

18–

68

18

DTC

P0847

Transmission Fluid Pressure Sensor 'B' Circuit Low

DTC

P0848

Transmission Fluid Pressure Sensor 'B' Circuit High

ET21180130

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

1

2

3

E-030

B

E-030

B

E-080

SECONDARY SHAFT
PRESSURE SENSOR

E-080

36

12

13

BGr

RL

WR

1

2

3