Chery Tiggo 5 (T21). Service manual — part 229

18–

105

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 transmission wire harness connector.
c. Check if the transmission wire harness connector is dirty, oxidized, loose or damaged.

DTC Code

DTC Definition

DTC Detection

Condition

DTC Set

Condition

Possible Cause

P0970

Pressure Control
Solenoid 'C' Control
Circuit Low

Start engine and wait
for at least 3 seconds

The solenoid
output feedback
voltage is
normal, oil
pressure control
solenoid 'C'
feedback current
is higher than the
standard max
value

 Solenoid circuit

open circuit or
short circuit

 Oil pressure

control solenoid 'C'
failure

P0971

Pressure Control
Solenoid 'C' Control
Circuit High

The solenoid
output feedback
voltage is
normal, oil
pressure control
solenoid 'C'
feedback current
is less than the
standard value

1

Check wire harness connector

Repair fault

NG

OK

18–

106

18

a. Turn ignition switch to LOCK and disconnect the negative

battery cable.

b. Disconnect the wire harness connectors E-052 and



E-030.

c. Check for continuity between terminals 3 and 10 of

connector E-052 and terminals 33 and 3 of connector



E-030.

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 terminals 33 and 3 of wire

harness connector E-030 and ground.

2

Check engine compartment wire harness

-

+

RT21181290

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-052

6

5

4

3

2

1

7

8

9

10

Repair or replace failed circuit

NG

3

Check for continuity between wire harness connector E-030 and ground

OK

-

+

RT21181300

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–

107

18

a. Turn ignition switch to LOCK and disconnect the negative

battery cable.

b. Disconnect the wire harness connector E-030.
c. Connect the negative battery cable.
d. Check if the terminal 33 of wire harness connector E-030

is short to power.

a. Using X-431 3G diagnostic tester, select Read Code.
b. Check if DTC P0970 or P0971 still exists.

4

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

RT21181310

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 for DTC

OK

Replace solenoid and wire harness
assembly

NG

System is normal

OK

18–

108

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

DTC

P2797

Auxiliary Transmission Fluid Pump Performance

DTC

P2798

Auxiliary Transmission Fluid Pump Control Circuit Low

DTC Code

DTC Definition

DTC Detection

Condition

DTC Set

Condition

Possible Cause

P2797

Auxiliary Transmission
Fluid Pump
Performance

Start engine and wait
for at least 10 seconds

The difference of
the target oil
pressure and
actual oil
pressure is
higher than the
table value

 Oil pressure

control valve core
seized

 Hydraulic system

pressure failure

P2798

Auxiliary Transmission
Fluid Pump Control
Circuit Low

The difference of
the target oil
pressure and
actual oil
pressure is
higher than table
value, and is
maintained for
over 700 ms

1

Carry out following preliminary checks

Repair fault

NG

OK