Dtc P0030: Ho2S Heater Control Circuit (Sensor-1, Bank-1) - Suzuki 2006 SX4 Service Manual

1A-58 Engine General Information and Diagnosis:

DTC P0030: HO2S Heater Control Circuit (Sensor-1, Bank-1)

Wiring Diagram
3
BLK/WHT
8
15 14 13 12 11
30 28 27 26
29
45 44 43 42 41
59
60 58 57 56
A1: Signal (+) circuit of A/F sensor
A2: Signal (–) circuit of A/F sensor
A3: Control circuit of A/F sensor heater
A4: Control ground circuit of A/F sensor heater
A5: Power supply circuit of A/F sensor heater and HO2S heater
B1: Signal circuit of HO2S
A/F Sensor Description
Refer to "A/F Sensor Description".
DTC Detecting Condition and Trouble Area
DTC detecting condition
Impedance of A/F sensor element is higher than 50 Ω for 20
sec. even though A/F sensor heater is turned ON.
(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 5 min. or more.
5) Check DTC and pending DTC.
6
5
A5
BLK
BLK
1
BLK
BLK
E01
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
2
A1
WHT
BLU
WHT BLK
A2
7
A3
RED
A4
BLK
2
B2
BLU BLK/RED
WHT
BRN
B1
7
B3
RED/BLU
2 1 15 14 13 12 11
17 16 30 28 27 26
29
32 31 45 44 43 42 41
59
47 46 60 58 57 56
B2: Ground circuit of HO2S
B3: Control circuit of HO2S heater
1. HO2S
2. Shield wire
3. Ignition switch
4. ECM
• A/F sensor heater and/or its circuit
• ECM
4
5 V
C01-38
C01-37
C01-32
C01-31
C01-39
C01-11
C01-47
C01
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
5. "IG COIL" fuse
6. A/F sensor
7. Sensor heater
8. "IGN" fuse
Trouble area
S6RW0C1104014
2 1
17 16
32 31
47 46
I7RW01110088-02