Chery Tiggo 5 (T21). Service manual — part 58
06–
74
06
Check for Short
a. Remove upstream oxygen sensor.
b. Check upstream oxygen sensor for following problems.
Moisture enters the internal of sensor, temperature changes greatly, and probe is broken.
Oxygen sensor is "poisoned" (Pb, S, Br, Si, etc.).
a. Use X-431 3G diagnostic tester to read the ECM DTC.
b. Refer to "DTC Confirmation Procedure".
c. Check if DTC P0130-00, P0131-00, P0132-00, P0133-00, P0134-00, P2195-00 or P2196-00 still exists.
Multimeter
Connection
Condition
Specified
Condition
E-084 (1) or
E-035 (16) - Body
ground
Always
No continuity
E-084 (1) or
E-035 (16) -
Battery positive
Repair or replace wire harness or
connector (upstream oxygen sensor -
ECM)
NG
6
Check upstream oxygen sensor
OK
Replace upstream oxygen sensor
NG
7
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
06–
75
06
DTC
P0136-00 O2 Sensor Circ., Bank1-Sensor2 Malfunction
DTC
P0137-00 O2 Sensor Circ., Bank1-Sensor2 Low Voltage
DTC
P0138-00 O2 Sensor Circ., Bank1-Sensor2 High Voltage
DTC
P0140-00 O2 Sensor Circ., Bank1-Sensor2 No Activity Detected
DTC
P2270-00 O2 Sensor Signal Stuck Lean; Bank 1 Sensor 2
DTC
P2271-00 O2 Sensor Signal Stuck Rich; Bank 1 Sensor 2
06–
76
06
ET21065003
BATTERY
ECM
MAIN
RELAY
10A
EF19
10A
EF17
10A
EF40
10A
EF39
A2
F14
2-20
RL
A4
2-35
L
2-5
Br
A6
A7
2-15
2-16
RR
R
R
86
87
85
30
3
1
4
2
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
2-21
WG
YL
GW
2-48
2-43
DOWN-
STREAM
OXYGEN
SENSOR
E-043
1
2
3
4
B
E-043
06–
77
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.
Start the engine and warm it up to normal operating temperature, and then 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 (
).
DTC Code
DTC Definitions
DTC Detection
Conditions
Possible Cause
P0136-00
O2 Sensor Circ.,
Bank1-Sensor2
Malfunction
Ignition switch ON
Engine running
Downstream oxygen sensor
Wire harness or connector
ECM
P0137-00
O2 Sensor Circ.,
Bank1-Sensor2 Low
Voltage
P0138-00
O2 Sensor Circ.,
Bank1-Sensor2 High
Voltage
P0140-00
O2 Sensor Circ.,
Bank1-Sensor2 No
Activity Detected
P2270-00
O2 Sensor Signal
Stuck Lean; Bank 1
Sensor 2
P2271-00
O2 Sensor Signal
Stuck Rich; Bank 1
Sensor 2
CAUTION
When performing circuit diagnosis and test, always refer to the circuit diagram for specific circuit and
component information.
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