C44" (P0156) Or "C64" (P0130) O2 Sensor (O2S) Circuit; Malfunction (For E-02, 19, 24, 51) - Suzuki VZR1800 2007 Service Manual

"C44" (P0156) or "C64" (P0130) O2 SENSOR (O2S) CIRCUIT

MALFUNCTION (FOR E-02, 19, 24, 51)

DETECTED CONDITION
C44/C64 O2 sensor output voltage is not input to
(P0156/ ECM during engine operation and run-
P0130) ning condition.
(Sensor voltage < 0.45 V)
INSPECTION
Step 1
(When indicating C44/P0156 for O2 sensor #2)
(When indicating C64/P0130 for O2 sensor #1)
1) Turn the ignition switch OFF.
2) Check the O2 sensor for loose or poor contacts.
If OK, then check the O2 sensor lead wire continuity.
3) Disconnect the O2 sensor coupler.
4) Check the continuity between W/G (#1) or W/Bl (#2) wire A
and ground.
5) Also, check the continuity between W/G (#1) or W/Bl (#2)
wire A and B/Br wire B. If the sound is not heard from the
tester, the circuit condition is OK.
 09900-25008: Multi-circuit tester set
 Tester knob indication: Continuity test ()
O2 sensor #1 O2 sensor #2
(Rear) (Front)
POSSIBLE CAUSE
• O2 sensor circuit open or shorted to ground.
• Fuel system malfunction.
• ECM malfunction.
ECM
O2S. R
W/G
W/Bl O2S. F
B/Br
E2
1
#1
1
VZR1800 ('08-MODEL) 14-19
1
#2