Suzuki Wagon R Manual page 2094

DTC P0131 O2 Sensor (HO2S) Circuit Low Voltage (Sensor-1)
DTC P0132 O2 Sensor (HO2S) Circuit High Voltage (Sensor-1)
Wiring Diagram
BLU/BLK
3
WHT/BLU
1
80A 60A
E23
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 box
2. Shield wire
3. Ignition switch
DTC Detecting Condition and Trouble Area
DTC Detecting Condition
DTC P0131:
• HO2S voltage is higher than 4.5 V even after engine run-
ning for specified time continuously from engine start
• Maximum HO2S voltage is less than 0.6 V or minimum
HO2S voltage is less than 0.3 V (2 driving cycle detection
logic)
DTC P0132:
• HO2S voltage is less than 3.0 V even after engine running
for specified time continuously from engine start
• Maximum HO2S voltage is 0.74 V or more or minimum
HO2S voltage is 0.34 V or more (
logic, monitoring once/1 driving)
DTC Confirmation Procedure
WARNING:
• When performing a road test, select a place where there is no traffic or possibility of a traffic acci-
dent and very careful during testing to avoid occurrence of an accident.
• Road test should be carried out with 2 person, a driver and tester, on a level road.
4
BLK/WHT
5
BLK/WHT
BLK/WHT
8
E22
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 COIL" fuse
6. HO2S–1
2 driving cycle detection
✱
ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE) 6-2-91
6
7
2
BRN/WHT
10
E21
2 1 6 5 4 3 2
10 9 8 16 15 14 13 12 11 10 9 8
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 sensor circuit
• HO2S–1 sensor
• Fuel system
• ECM
• Fuel shortage
9
BLK/WHT E21-28
E23-4
YEL
RED E22-11
BRN/WHT
E22-28
1
7
18 17
29 28
10. To other sensor
Trouble Area