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 (

See page 06-18

).

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.