Dtc P0031 Ho2S Heater Control Circuit Low (Sensor-1); Dtc P0032 Ho2S Heater Control Circuit High (Sensor-1) - Suzuki Wagon R Plus RB310 Service Manual

6-2-98 ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE)

DTC P0031 HO2S Heater Control Circuit Low (Sensor-1)

DTC P0032 HO2S Heater Control Circuit High (Sensor-1)

Wiring Diagram
BLU/BLK
3
WHT/BLU
1
80A 60A
E23
7 6 5 4
17 16 15 14 13 12
27 26 25 24 23 22
34 33 32
1. Relay 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 5 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
8
E22
3 2 1 7 6 5 4 3
11 10 9 8 19 18 17 16 15 14 13 12
21 20 19 18 27 26 25 24
31 30 29 28 35 34 33 32
4. Circuit fuse box
5. "IG COIL" fuse
6. HO2S–1
6
BLK/WHT
7
2
BRN/WHT
E21
2 1 6 5 4 3
11 10 9 8 16 15 14 13 12 11 10 9
23 22 21 20 27 26 25 24 23 22 21 20
31 30 29 28 35 34 33 32 31
7. Heater
8. To HO2S–2 heater
9. ECM
• HO2S–1 heater
• HO2S–1 heater circuit
• ECM
9
BLK/WHT E21-28
E23-4
YEL
RED E22-11
BRN/WHT E22-28
10
2 1
8 7
19 18 17
30 29 28
10. To other sensor
Trouble Area