Chery Tiggo 5 (T21). Manual — part 48
06–
34
06
a. Disconnect upstream oxygen sensor connector E-084.
b. Check upstream oxygen sensor connector.
a. Turn ignition switch to ON.
b. Check voltage between terminal 4 of upstream oxygen
sensor connector E-084 and body ground.
2
Check upstream oxygen sensor connector
RT21090110
Repair or replace connector
NG
3
Check upstream oxygen sensor heater power supply voltage
OK
E-084
1
2
3
4
-
+
V
RT21065008
Multimeter
Connection
Condition
Specified
Condition
E-084 (4) - Body
ground
Ignition switch ON
11 to 14 V
Go to step 5
OK
NG
06–
35
06
a. Turn ignition switch to LOCK.
b. Check fuse EF39 and main relay.
c. Disconnect engine compartment fuse and relay box
connector E-076.
d. Check wire harness between upstream oxygen sensor
connector terminals and engine compartment fuse and
relay box connector terminals.
Check for Open
Check for Short
4
Check upstream oxygen sensor power supply circuit
E-076
A1
A2
A3
A4
A5
A6
A7
A8 A9 A10
E-084
1
2
3
4
-
+
RT21065009
Multimeter
Connection
Condition
Specified
Condition
E-084 (4) - E-076
(A7)
Always
Continuity
Multimeter
Connection
Condition
Specified
Condition
E-084 (4) or
E-076 (A7) - Body
ground
Always
No continuity
E-084 (4) or
E-076 (A7) -
Battery positive
Always
No continuity
Replace fuse, main relay, wire harness or
connector (upstream oxygen sensor -
engine compartment fuse and relay box)
NG
OK
06–
36
06
a. Disconnect ECM connector E-035.
b. Check wire harness between upstream oxygen sensor
connector terminals and ECM connector terminals.
Check for Open
Check for Short
a. Measure resistance of upstream oxygen sensor.
5
Check upstream oxygen sensor heater control circuit
E-084
E-035
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
1
2
3
4
-
+
RT21065010
Multimeter
Connection
Condition
Specified
Condition
E-084 (3) - E-035
(9)
Always
Continuity
Multimeter
Connection
Condition
Specified
Condition
E-084 (3) or
E-035 (9) - Body
ground
Always
No continuity
E-084 (3) or
E-035 (9) -
Battery positive
Always
No continuity
Repair or replace wire harness or
connector (upstream oxygen sensor -
ECM)
NG
6
Check upstream oxygen sensor heater
OK
RT21090140
-
+
A
B
C
D
Multimeter
Connection
Condition
Specified
Condition
Terminal C -
Terminal D
20°C
7 - 11 Ω
Terminal A -
Terminal B
Always
No continuity
Terminal A -
Terminal C
Terminal A -
Terminal D
Terminal B -
Terminal C
Terminal B -
Terminal D
Replace upstream oxygen sensor
NG
06–
37
06
a. Use X-431 3G diagnostic tester to read the ECM DTC.
b. Refer to "DTC Confirmation Procedure".
c. Check if DTC P0030-00, P0031-00, P0032-00 or P0053-00 still exists.
7
Check for DTCs
Replace ECM
OK
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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