Suzuki VLR1800 Service Manual page 129

Step
1 6) Disconnect the ECM coupler. Refer to "ECM Removal
and Installation in Section 1C (Page 1C-1)".
7) Insert the needle pointed probes to the lead wire coupler.
8) Check the continuity between the B wire "B" and terminal
"22".
Also, check the continuity between B/Br wire "C" and
terminal "29".
Special tool
(A): 09900–25008 (Multi-circuit tester set)
(B): 09900–25009 (Needle pointed probe set)
Tester knob indication
Continuity (
ECM coupler (Harness side)
"B"
(B)
"22"
(Black)
Is the continuity OK?
Action
)
"C"
(A)
"29"
(Gray)
Engine General Information and Diagnosis:
Yes
Go to Step 2.
I822H1110050-02
1A-60
No
B wire shorted to VCC,
or B/Br wire open.