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DTC P0031 HO2S Heater Control Circuit Low (Sensor-1)
DTC P0032 HO2S Heater Control Circuit High (Sensor-1)
WIRING DIAGRAM
BLK/YEL
3
WHT/BLU
1
80A
60A
C64
7
6
5
4
3
17
16
15
14
13
12
11
27
26
25
24
23
22
21
34
33
32
31
1. Relay/fuse box
2. Shield wire
3. Ignition switch
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITION
Current of HO2S–2 heater is more than specified value
or lower than specified value for 3 seconds continuously
(2 driving cycle detection logic)
DTC CONFIRMATION PROCEDURE
1) With ignition switch turned 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) Run engine at idle speed for 1 min. or more.
5) Check DTC and pending DTC.
4
BLK/WHT
5
BLK/WHT
BLK/WHT
8
C63
2
1
7
6
5
4
3
10
9
8
19
18
17
16
15
14
13
12
11
20
19
18
27
26
25
24
23
30
29
28
35
34
33
32
31
4. Circuit fuse box
5. "IG" fuse
6. HO2S–1
ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-101
6
7
2
ORN
G91
2
1
6
5
4
3
2
10
9
8
16
15
14
13
12
11
10
9
22
21
20
27
26
25
24
23
22
21
20
19
30
29
28
35
34
33
32
31
30
7. Heater
8. To HO2S–2 heater
9. ECM
• HO2S–1 heater
• HO2S–1 heater circuit
• ECM
9
BLK/WHT
G91-28
BLK/WHT
C64-4
WHT
C63-11
ORN
C63-28
10
1
7
8
18
17
29
28
10. To other sensor
TROUBLE AREA
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