Chery Tiggo 5 (T21). Service manual — part 221

18–

73

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.

DTC Code

DTC Definition

DTC Detection

Condition

DTC Set

Condition

Possible Cause

P0890

TCM Power Relay
Sense Circuit Low

Start engine and wait
for at least 10 seconds

TCU power
command is
sent, solenoid
output feedback
voltage is less
than the
standard value

 Solenoid circuit

open circuit or
short circuit

 TCU power relay

failure

P0891

TCM Power Relay
Sense Circuit High

TCU power
command is not
sent, solenoid
output feedback
voltage is higher
than the
standard value

1

Check if TCU power fuse EF19 and EF46 are normal

Replace failed fuse

NG

2

Check if battery to fuse box TCU fuse and relay circuit are normal

OK

Repair or replace failed circuit

NG

OK

18–

74

18

a. Turn ignition switch to LOCK and disconnect the negative

battery cable.

b. Disconnect the connector E-066, E-069 and E-076.
c. Connect the negative battery cable.
d. Check if the output voltage of the terminals J2 of

connector E-066 is normal.

e. Check if the output voltage of the terminals F16 of

connector E-069 is normal.

3

Check if TCU relay 12 operates normally

Repair TCU relay 12

NG

4

Check engine compartment fuse and relay box

OK

RT21181070

-

+

V

E-066

J2

J1

RT21181080

-

+

V

E-069

F12

F24

F11

F23

F10

F22

F9

F21

F8

F20

F7

F19

F6

F18

F5

F17

F4

F16

F3

F15

F2

F14

F1

F13

18–

75

18

f. Check if the output voltage of the terminals A2 of

connector E-076 is normal.

a. Turn ignition switch to LOCK and disconnect the negative

battery cable.

b. Disconnect the connectors E-030, E-066, E-069 and E-076.
c. Check for continuity between the terminal 3 of connector

E-030 and terminal J2 of connector E-066.

RT21181090

-

+

V

E-076

A1

A2

A3

A4

A5

A6

A7

A8 A9 A10

Replace fuse box

NG

5

Check engine compartment wire harness

OK

-

+

RT21181100

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-066

J2

J1

18–

76

18

d. Check for continuity between the terminal 31 of

connector E-030 and terminal F16 of connector E-069.

e. Check for continuity between terminal 56 of connector

E-030 and terminal A2 of connector E-076.

a. Using X-431 3G diagnostic tester, select Read Code.
b. Check if DTC P0890 or P0891 still exists.

-

+

RT21181110

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-069

F12

F24

F11

F23

F10

F22

F9

F21

F8

F20

F7

F19

F6

F18

F5

F17

F4

F16

F3

F15

F2

F14

F1

F13

-

+

RT21181120

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-076

A1

A2

A3

A4

A5

A6

A7

A8 A9 A10

Replace engine compartment wire
harness

NG

6

Check for DTC

OK

Replace TCU

NG

System is normal

OK