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
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