Suzuki VLR1800 Service Manual page 169

Step
4 8) Then, to set the EXCV to fully opened position, apply 12
V to the terminals oppositely.
Positive wire – Gr wire terminal
Negative wire – P wire terminal
9) Measure the EXCVA position sensor output voltage at
EXCV fully opened position.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
(B): 09900–25009 (Needle pointed probe set)
Tester knob indication
Voltage ( )
EXCVA position sensor output voltage
EXCV is fully opened: 3.5 – 4.5 V
((+) Y – (–) W)
(A)
Is the voltage OK?
Action
I822H1110115-01
(B)
I822H1110116-01
Engine General Information and Diagnosis:
Yes
Replace the ECM with a
known good one, and
inspect it again.
1A-100
No
Go to Step 5.