Suzuki Grand Vitara JB627. Manual — part 53

1A-161 Engine General Information and Diagnosis:

DTC P2195 / P2196: O2 Sensor Signal Stuck Lean / Stuck Rich (Sensor-1, Bank-1)

S6JB0B1104067

System and Wiring Diagram

A/F Sensor Description
Refer to “A/F Sensor Description”

DTC Detecting Condition and Trouble Area

4

3

9

PNK

6

2

1

d

a

b

8

5

BLK/WHT

BLK

PNK

GRN

C37-16

C37-77

C37-19

C37-18

BLK

BLK

BLU

WHT

C37-17

C37-79

BLK

WHT

RED/YEL

RED/BLU

PNK/BLK

BLK/YEL

10

7

11

5 V

5 V

1

3 2

4

5

6

7

8

9

1110

12

13

14

15

16

17

18

19

20

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

33

34

35

36

37

38

39

40

32

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

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46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

c

I6JB01110102-01

a. Signal (+) circuit of A/F sensor (bank-1)

1. HO2S heater relay

5. IG COIL fuse

9. ECM

b. Signal (–) circuit of A/F sensor (bank-1)

2. Shield wire

6. A/F sensor

10. Adjusting resistor (if equipped)

c. Adjusting resistor (+) circuit of A/F sensor (bank-1)

3. Ignition Switch

7. A/F sensor heater

11. A/F sensor element

d. Adjusting resistor (–) circuit A/F sensor (bank-1)

4. O2 HTR fuse

8. To A/F sensor (bank-2),

HO2S (bank-1 and -2)

DTC detecting condition

Trouble area

DTC P2195 O2 Sensor Signal Stuck Lean (Sensor-1, Bank-1):
Short term fuel trim is higher than 130% for 30 seconds even though
HO2S (bank-1) signal voltage is higher than 0.5 V.
(2 driving cycle detection logic)
DTC P2196 O2 Sensor Signal Stuck Rich (Sensor-1, Bank-1):
Short term fuel trim is lower than 70% for 30 seconds even though
HO2S (bank-1) signal voltage is lower than 0.5 V.
(2 driving cycle detection logic)

• A/F sensor circuit
• A/F sensor
• ECM

Engine General Information and Diagnosis: 1A-162

DTC Confirmation Procedure

WARNING

!

• When performing a road test, select a place where there is no traffic or possibility of a traffic

accident and very careful during testing to avoid occurrence of an accident.

• Road test should be carried out with 2 persons, a driver and a tester, on a level road.

NOTE
Check to make sure that the following conditions are satisfied when using this “DTC Confirmation
Procedure”.
• Intake air temperature: –10

°C (14 °F) to 80 °C (176 °F)

• Engine coolant temperature: 20

°C (68 °F) or more

• Atmospheric pressure: higher than 75 kPa (560 mmHg) (Altitude: lower than 2790 m (9150 ft))
• The following DTCs are not detected: ECT sensor, CMP sensor, IAT sensor, TP sensor, barometric

pressure sensor, A/F sensor heater, HO2S sensor, HO2S sensor heater and A/F sensor (other than
DTC P2195 and DTC P2196)

1) With ignition switch OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Start engine and warm up to normal operating temperature.
4) Drive vehicle at 40 mph (60 km/h) or higher. (engine speed: 2500 – 3000 r/min.)
5) Keep above vehicle speed for 4 min. or more. (Throttle valve opening is kept constant in this step.)
6) Check if DTC and pending DTC exist by using scan tool. If not, check if oxygen sensor monitoring test has been

completed by using scan tool. If not in both of above checks (i.e., no DTC and pending DTC and oxygen sensor
monitoring test not completed), check vehicle condition (environmental) and repeat Step 3) through 6).

DTC Troubleshooting

NOTE
Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to
“Precautions for DTC Troubleshooting”.

Step

Action

Yes

No

1

Was “Engine and Emission Control System Check”
performed?

Go to Step 2.

Go to “Engine and
Emission Control
System Check”.

2

DTC check

Is there DTC P0171 or P0172?

Go to applicable DTC.

Go to Step 3.

3

Intake system and exhaust system for leakage check
1) Check intake system and exhaust system for leakage.

Is it in good condition?

Go to Step 4.

repair or replace
defective parts.

1A-163 Engine General Information and Diagnosis:

DTC P2197 / P2198: O2 Sensor Signal Stuck Lean / Stuck Rich (Sensor-1, Bank-2)

S6JB0B1104068

System and Wiring Diagram

A/F Sensor Description
Refer to “A/F Sensor Description”

4

A/F sensor circuit check
1) Disconnect connector from A/F sensor (bank-1) with

ignition switch turned OFF.

2) Check for proper terminal connection to A/F sensor

(bank-1) connector.

3) If connections are OK, check that A/F sensor (bank-1)

circuit is as follows.
• Wiring harness resistance of each “Signal (+) circuit of

A/F sensor (bank-1)”, “Signal (–) circuit of A/F sensor
(bank-1)”, “Adjusting resistor (+) circuit of A/F sensor
(bank-1)” and “Adjusting resistor (–) circuit A/F sensor
(bank-1)” is less than 1

Ω.

Is it in good condition?

Replace A/F sensor
(bank-1).

Repair or replace
defective wiring
harness.

Step

Action

Yes

No

4

3

9

PNK

6

2

1

8

5

BLK/WHT

BLK

PNK

GRN

C37-35

C37-78

C37-38

C37-37

BLK

BLK

BLU

WHT

C37-36

C37-79

BRN

YEL

BLU/YEL

BLU/RED

PNK/BLU

BLK/YEL

10

7

11

5 V

5 V

1

3 2

4

5

6

7

8

9

1110

12

13

14

15

16

17

18

19

20

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

33

34

35

36

37

38

39

40

32

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

d

a

b

c

I6JB01110103-01

a. Signal (+) circuit of A/F sensor (bank-2)

1. HO2S heater relay

5. IG COIL fuse

9. ECM

b. Signal (–) circuit of A/F sensor (bank-2)

2. Shield wire

6. A/F sensor

10. Adjusting resistor (if equipped)

c. Adjusting resistor (+) circuit of A/F sensor (bank-2)

3. Ignition Switch

7. A/F sensor heater

11. A/F sensor element

d. Adjusting resistor (–) circuit A/F sensor (bank-2)

4. O2 HTR fuse

8. To A/F sensor (bank-1),

HO2S (bank-1 and -2)

Engine General Information and Diagnosis: 1A-164

DTC Detecting Condition and Trouble Area

DTC Confirmation Procedure

WARNING

!

• When performing a road test, select a place where there is no traffic or possibility of a traffic

accident and be very careful during testing to avoid occurrence of an accident.

• Road test should be carried out by 2 persons, a driver and a tester, on a level road.

NOTE
Check to make sure that following conditions are satisfied when using this “DTC Confirmation
Procedure”.
• Intake air temperature: –10

°C (14 °F) to 80 °C (176 °F)

• Engine coolant temperature: 30

°C (86 °F) or more

• Atmospheric pressure: higher than 75 kPa (560 mmHg) (Altitude: lower than 2790 m (9150 ft))
• The following DTCs are not detected: ECT sensor, CMP sensor, IAT sensor, TP sensor, barometric

pressure sensor, A/F sensor heater, HO2S sensor, HO2S sensor heater and A/F sensor (other than
DTC P2197 and DTC P2198)

1) With ignition switch OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and warm up to normal operating temperature.
4) Drive vehicle at 40 mph (60 km/h) or higher. (engine speed: 2500 – 3000 r/min.)
5) Keep above vehicle speed for 4 min. or more. (Throttle valve opening is kept constant in this step.)
6) Check if DTC and pending DTC exist by using scan tool. If not, check if oxygen sensor monitoring test has been

completed by using scan tool. If not in both of above checks (i.e., no DTC and pending DTC and oxygen sensor
monitoring test not completed), check vehicle condition (environmental) and repeat Step 3) through 6).

DTC Troubleshooting

NOTE
Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to
“Precautions for DTC Troubleshooting”.

DTC detecting condition

Trouble area

DTC P2197 O2 Sensor Signal Stuck Lean (Sensor-1, Bank-2):
Short term fuel trim is higher than 130% for 30 seconds even
though HO2S (bank-2) signal voltage is higher than 0.5 V.
(2 driving cycle detection logic)
DTC P2198 O2 Sensor Signal Stuck Rich (Sensor-1, Bank-2):
Short term fuel trim is lower than 70% for 30 seconds even though
HO2S (bank-2) signal voltage is lower than 0.5 V.
(2 driving cycle detection logic)

• A/F sensor circuit
• A/F sensor
• ECM

Step

Action

Yes

No

1

Was “Engine and Emission Control System Check”
performed?

Go to Step 2.

Go to “Engine and
Emission Control
System Check”.

2

DTC check

Is there DTC P0174 or P0175?

Go to applicable DTC.

Go to Step 3.

3

Intake system and exhaust system for leakage check
1) Check intake system and exhaust system for leakage.

Is it in good condition?

Go to Step 4.

Repair or replace
defective parts.