Dtc "C44" (P0130/P0135): Ho2 Sensor (Ho2S) Circuit Malfunction - Suzuki GW250 Service Manual

DTC "C44" (P0130/P0135): HO2 SENSOR (HO2S) CIRCUIT MALFUNCTION

DETECTED CONDITION AND POSSIBLE CAUSE
DETECTED CONDITION
HO2 sensor output voltage is not input
C44
to ECM specified running condition.
P0130
C44 The heater can not operate so that
heater operation voltage is not supplied
P0135
to the oxygen heater circuit.
WIRING DIAGRAM
ECM
E2
HO2S
HO2SH
1 2 3 4 5 6
14 15 16 17 18 19
TROUBLESHOOTING
When using the multi circuit tester, do not strongly touch the terminal of the ECM coupler with
a needle-point tester probe to prevent terminal damage.
NOTE:
After repairing the trouble, clear the DTC using SDS tool. (4-25)
B/Br
B
W
HO2 sensor
ECM coupler (Harness side)
7 8 9 10 11 12 13
20 21 22 23 24 25 26
POSSIBLE CAUSE
• Output state of HO2 sensor.
• Oxygen heater circuit is open or shorted to
ground.
• Battery voltage is not supplied to the HO2 sensor.
Engine stop
switch
O/W
To side-stand
switch
Side-stand
relay
27 29 30 31 32 33 34 35
36 37 38 39 40 41 42 43 44
FI SYSTEM DIAGNOSIS 4-71
Ignition
switch