Chery Tiggo 5 (T21). Service manual — part 76
06–
146
06
ET21065016
BATTERY
ECM
MAIN
RELAY
10A
EF19
10A
EF17
10A
EF40
A2
F14
2-20
RL
A4
2-35
L
2-5
Br
A6
2-15
2-16
RR
R
86
87
85
30
ENGINE
COMPARTMENT
FUSE AND
RELAY BOX
IGNITION SWITCH
ON OR START
A1
A2
A3
A4
A5
A6
A7
A8 A9 A10
F12
F24
F11
F23
F10
F22
F9
F21
F8
F20
F7
F19
F6
F18
F5
F17
F4
F16
F3
F15
F2
F14
F1
F13
Gr
E-076
W
E-069
E-076
E-069
B
E-033
49 50 51
63
64
15
16
31
32
47
48
33 34 35
17 18 19
1
2
3
52 53 54 55 56 57 58 59 60 61 62
36 37 38 39 40 41 42 43 44 45 46
20 21 22 23 24 25 26 27 28 29 30
4
5
6
7
8
9 10 11 12 13 14
ECM-2
E-033
37 38 39 40 41 42 43 44 45 46
47
48
25 26 27 28 29 30 31 32 33 34
35
36
13 14 15 16 17 18 19 20 21 22
23
24
1
2
3
4
5
6
7
8
9 10
11
12
B
E-035
ECM-1
E-035
EF38
7.5A
A8
RL
RL
1-47
Br
Br
1-48
E-028
2-63
B
B
2-64
E-026
2-41
F6
F7
2
5
1
3
B6
EF35
15A
R
R
FUEL PUMP MOTOR
M
B
4
3
FUEL
PUMP
RELAY
13
E-070
B-048
B-038
B-036
B1
B2
B3
B4
B5
B6
B7
B8 B9 B10
1
2
3
4
Y
E-073
E-073
W
E-070
1
2
3
4
5
6
7
8
9 10
11 12 13 14 15
18
17
16
19 20 21 22
B
B-038
06–
147
06
DTC Confirmation Procedure
Confirm that battery voltage is over 12 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).
Turn ignition switch to ON.
Use X-431 3G diagnostic tester to record and clear the DTCs stored in the ECM.
Select Read Code.
If the 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 (
).
Diagnosis Procedure
a. Turn ignition switch to LOCK.
b. Check ECM grounds E-026 and E-028 (
DTC Code
DTC Definition
DTC Detection
Condition
Possible Cause
P0627-00
Fuel Pump "A" Control
Circuit/Open
Ignition switch ON
Engine running
Fuel pump relay
Wire harness or connector
ECM
Engine compartment fuse and relay
box
P0628-00
Fuel Pump "A" Control
Circuit Low
P0629-00
Fuel Pump "A" Control
Circuit High
CAUTION
When performing circuit diagnosis and test, always refer to the circuit diagram for specific circuit and
component information.
1
Check ECM ground point
Repair or replace ground wire harness or
ground point
NG
OK
06–
148
06
a. Unplug fuel pump relay from engine compartment fuse
and relay box.
b. Check fuel pump relay terminals.
a. Disconnect engine compartment fuse and relay box
connector E-069.
b. Disconnect ECM connector E-033.
c. Check wire harness between connector terminals.
Check for Open
Check for Short
2
Check fuel pump relay
-
+
2
1
5
3
1
2
3
5
RT21060270
Multimeter
Connection
Specified Condition
3 - 5
No continuity
3 - 5
Continuity
(when battery voltage is applied
between terminals 1 and 2)
Replace fuel pump relay
NG
3
Check fuel pump relay control circuit
OK
E-033
E-069
49 50 51
63
64
15
16
31
32
47
48
33 34 35
17 18 19
1 2 3
52 53 54 55 56 57 58 59 60 61 62
36 37 38 39 40 41 42 43 44 45 46
20 21 22 23 24 25 26 27 28 29 30
4 5 6 7 8 9 10 11 12 13 14
F12
F24
F11
F23
F10
F22
F9
F21
F8
F20
F7
F19
F6
F18
F5
F17
F4
F16
F3
F15
F2
F14
F1
F13
-
+
RT21065056
Multimeter Connection
Specified
Condition
E-033 (41) - E-069 (F7)
Continuity
Multimeter Connection
Specified
Condition
E-033 (41) or E-069 (F7) -
Body ground
No continuity
E-033 (41) or E-069 (F7) -
Battery positive
No continuity
Repair or replace wire harness or
connector (engine compartment fuse and
relay box - ECM)
NG
OK
06–
149
06
a. Turn ignition switch to ON.
b. Measure voltage between terminal of fuel pump relay and
body ground.
a. Use X-431 3G diagnostic tester to read the ECM DTC.
b. Refer to "DTC Confirmation Procedure".
c. Check if DTC P0627-00, P0628-00 or P0629-00 still exists.
4
Check fuel pump relay terminal voltage
RT21060280
-
+
V
1
2
5
3
Multimeter
Connection
Condition
Specified
Condition
Fuel pump relay
terminal 1 (engine
compartment fuse
and relay box
side) - Body
ground
Ignition switch ON
11 to 14 V
Go to step 6
OK
5
Check main relay and fuse EF38
NG
Replace main relay or fuse
NG
Repair or replace engine compartment fuse and relay box or wire harness (engine compartment fuse
and relay box - battery)
6
Check for DTCs
OK
Replace ECM
NG
System is operating normally.
Reassemble vehicle and perform a road test to confirm that malfunction reported by customer has
been repaired.
OK
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