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DTC P0171 / P0172 / P2195 / P2196: Fuel System Too Lean / Rich / Stuck Lean / Stuck Rich
Wiring Diagram
BLK/WHT
*GRN
4
5
3
15
14
13
12
11
30
29
28
27
26
44
45
43
42
41
59
60
58
57
56
1. HO2S heater relay
2. Shield wire
3. Ignition switch
A/F Sensor Description
Refer to "A/F Sensor Description: For Petrol Engine Model".
DTC Detecting Condition and Trouble Area
DTC detecting condition
DTC P0171:
Total fuel trim (short term fuel trim + long term fuel trim) is higher
than specified range for 30 to 90 sec (depending on ECT)
continuously.
(2 driving cycle detection logic)
DTC P0172:
Total fuel trim (short term fuel trim + long term fuel trim) is lower
than specified range for 30 to 90 sec (depending on ECT)
continuously.
(2 driving cycle detection logic)
DTC P2195:
A/F sensor output is higher than 0.7 V while vehicle is running
constant speed and constant engine load after warmed up.
(2 driving cycle detection logic)
DTC P2196:
A/F sensor output is lower than 0.2 V while vehicle is running
constant speed and constant engine load after warmed up.
(2 driving cycle detection logic)
Engine General Information and Diagnosis: For Petrol Engine Model 1A-118
1
BLK
PNK
BLK
8
PNK
BLK
E23
10
9
8
7
6
5
4
3
25
24
23
22
21
20
19
18
40
39 38
37
36
35
34
33
55
54 53
52
51
50
49
48
4. "O2 HTR" fuse
5. "IG COIL" fuse
6. A/F sensor
6
2
11
BLU
WHT
7
10
2
1
15
14
13
12
11
17
16
30
29
28
27
26
44
32 31
45
43
42
41
59
47 46
60
58
57
56
7. Heater
8. To HO2S-2 heater
9. ECM
• Vacuum leakage
• Exhaust gas leakage
• Fuel pressure out of specification
• Fuel injector malfunction
• A/F sensor malfunction
• MAF sensor malfunction
• ECT sensor malfunction
9
5 V
C37-38
WHT
C37-37
BLK
5 V
RED/YEL
C37-35
RED/BLU
C37-34
PNK/BLU
C37-32
C37-31
BLK/YEL
C37
10
9
8
7
6
5
4
3
25
24
23
22
21
20
19
18
40
39 38
37
36
35
34
33
55
54 53
52
51
50
49
48
10. Adjusting resistor (J20A engine)
11. Sensor
*: M16A engine
Trouble area
S6JB0A1114036
2
1
17
16
32 31
47 46
I5JB0A110044-02
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