Suzuki VL800 Service Manual page 438

14-86 VL800K5 ('05-MODEL)
"C44" (P0130/P0135) HO2 SENSOR (HO2S) CIRCUIT MALFUNCTION
(E-02, 19, 24)
DETECTED CONDITION
C44 HO2 sensor output voltage is not input
(P0130) to ECM during engine operation and
running condition.
(Sensor voltage
C44 The heater can not operate so that
(P0135) heater operation voltage is not supply to
the oxygen heater circuit.
ECM
E2
HO2S
HO2. H
B+1
INSPECTION
Step 1 (When indicating C44/P0130:)
1) Remove the right frame cover. ($7-2)
2) Turn the ignition switch OFF.
3) Check the HO2 sensor coupler for loose or poor contacts.
If OK, then check the HO2 sensor lead wire continuity.
0.1 V)
B/Br
W/Bl
O/W
W/B
O/W
O/G
HO2 sensor
POSSIBLE CAUSE
• HO2 sensor circuit open or shorted to ground.
• HO2 sensor malfunction.
• ECM malfunction.
• Battery voltage supply to the HO2 sensor.
Engine stop
Side-stand relay
switch
To GP switch
1
Ignition
switch