Suzuki Intruder VZ1500 Service Manual page 148

1A-81 Engine General Information and Diagnosis:
Step
1 1) Turn the ignition switch OFF.
2) Remove the right frame side cover. Refer to "Exterior
Parts Removal and Installation in Section 9D (Page 9D-
5)".
3) Check the HO2 sensor for loose or poor contacts.
If OK, then check the HO2 sensor lead wire continuity.
4) Disconnect the HO2 sensor coupler.
5) Check the continuity between the Br wire and ground.
Also, check the continuity between Br wire and B/Br
wire.
If the sound is not hard from the tester, the circuit
condition is OK.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Continuity (
6) Disconnect the ECM coupler. Refer to "ECM Removal
and Installation in Section 1C (Page 1C-1)".
Action
)
(A)
Yes
Go to Step 2.
I940H1110073-01
I940H1110074-02
No
W/G wire shorted to
ground, or Br or B/Br
wire open.